FIXED!! 2010 - 2015 Prius misfire when accelerating slowly
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- Опубліковано 8 гру 2019
- This video will show you how to diagnose a plugged EGR system and how to properly remedy it.
No more guessing.
Engine misfires at operating Temperature (above 185 degrees Fahrenheit)
Only when accelerating slowly (before throttle body opens)
Questions, 209-305-1672 - Авто та транспорт
Had the problem 2 years+
Toyota could not find the problem and refuse to acknowledge there is a problem.
My problem was exactly as described and I followed the instructions and fix it in 1 hour.
Man, I wish Toyota put your channel in their website. It actually will proof how Toyota needs proper maintenance, not repair.
Yea toyota would just say how much do you love your prius? "umm yea your gonna need a new egr valve, intake, throttle body, head gasket, Oil, antifreeze and and tune up." " im sorry, yes i know but this is what we have to do"
@@unclejay9205 LOL ...., that's normal maintenance. 2010-2012 indeed has designed flaw head gasket. The rest are all ok passing 200k miles easily. Throttle body, sparkplug, cleaning intake manifold are parts of maintenance for all cars after 120k miles. Goodluck with any GM or European cars that needs no serious repair before 100k miles. There are some problems but all are under recalls such as inverter, and some early version of brake booster. At least until August 2021, 2011 or newer got free replacement unlimited miles. Statisticaly, it is still one of the most reliable car. Although, 2nd gen has much less problems in the first 10 years/300k miles.
@@rondhole theres no design flaw in the head gasket. Its the piston and rings. But they are all effected by the same issues it just takes longer for the problems to develop on the later models.
@@paladain55 piston and rings effects pre-2015 model where Toyota used low tension rings and piston with smaller return holes. In 2013, the oil consumption is much less than 2010-2012 because the piston was revised that year together with head gasket. Most 3rd gen prius that consume high oil is pre 2013 and also many are used mainly in city with 10k miles oil change interval. Toyota actually recommend 5k miles for city drives and heavy traffic in the manual.
@@paladain55 sequoia is the twin of Land Cruiser, really reliable. Prius 2010-2012 has bad head gasket design that is revised in 2013. 1 q per 2500 miles is not that bad but it is on the way to go bad. Toyota revised piston in 2014 and piston rings in 2015. Generally speaking you are in high risk of many things go wrong on 2010 Prius.
Your video save me, two month no one resolve the problem in my car, after cleaning the EGR system, everything work perfectly, thank-you dude . from Montréal
Holy crap what an easy diagnostic! It’s exactly what my car was doing unplugged the EGR disconnect and it ran smoothly! Lol. I definitely had other problems and complications, but fix those and still had this problem. No one could figure it out so now I know where to go from here thank you.!
Just unplugged the EGR sensor and the problems cleared up beautifully. I'll do the cleaning when I get home this evening. Thanks for the help!
I know it’s been a long time but did it work or no
Im out here on the east coast and after learning what you guys are teaching i don't want anyone to work on my prius because i know they won't pay attention to the details like you guys. Thanks again for making these.
Thank god I found this video. Did a lot of searching for the problem I got recently with my Prius and suffered through 2 bouts of spark plug/coil changes within months, when I should've done this in the first place. Saved my butt.
You are the man! Solved my problem. Car runs great now
Good job man.
Priuses have lots of interesting problems.
Great video.
Great tip... i wish more things could be diagnosed that way!
Thank you! Had these exact symptoms and disconnecting the EGR confirmed the problem.
This is exactly what is happening to my Prius. Thanks for video!
You're correct, I just took the intake off and noticed those 4 small holes and when I started spraying simple green into them I noticed they were flowing out where the egr pipe connects to.
great vid. i had the same problem and thanks to you i fixed it, very appreciated!
Thank you so much! This was exactly what I needed was able to fix it myself! I also recommend changing the PCV valve when you do the intake manifold cleaning makes it way easier and is a cheap part!
thank u sir, appreciat it, i spend to much time and money every mechanic is guessing and i spend but acctually urs was working
Thanks a lot!!
Had the same issue with my Lexus CT200
thanks man, I was getting the "hybrid system malfunction" and "check engine" light come on. At first once every few weeks and now it is coming on twice a every day. I could clear the light by disconnecting the battery and power system. finally, I remembered watching your video a few weeks back, so I disconnected the EGR, 2 days ago, and have not had the "hybrid system malfunction" light come on yet. and I don't feel the hesitation when slowly accelerating. I get next I got to take the intake out and clean it out. I went through to my you tube history to right you this note. I hope that is the problem with my pruis V 2015. thank you .
Hey Jack, I'm another Jack with a V and the same problem. I only get the P219a code and rattles. What ended up being the problem or have you fixed it?
@@Jacksirrom no I have not fixed it or have found out what is the cause. if you find out please let me know.
in my original comment I wrote by disconnecting the egr it worked better. but later I found out this was a mistake or it got better temporary it went back to failing.
I cleaned the intake manifold. found the connection to PCV valve clogged up with Grease looking stuff. hardly any pressure was being relieved. I cleaned that out and replaced the pcv valve. I felt that made noticeable difference.
@@jacka.4774 it’s a blown head gasket
thank you for this video Gasket Masters! This also seems to be a problem with CT hybrid I have!
I had the same thing happen in my 2010 prius. I unplugged the EGR system and it ran perfectly. I had just cleaned out my intake manifold and EGR pipe very recently and it was still doing it. So I took it all back apart again cleaned it again but also replaced the PCV valve underneath the intake manifold. Once I did this it ran fine again with no issues. So also make sure you replace the PCV valve.
how long did you run the car with the EGR unplugged for?
@solojrc I actually ran with it unplugged for several months at one point. It does not hurt your car to unplug your EGR system. You will just have a check engine light on and the emissions from your car won't be as good but you don't need it to actually run your engine
I have the oil consumption problem on my 2011bprius and just recently started having an issue of momentarily engine stuttering at low partial throttle and when decelerating at just about any speed, no DTCs. Im definitely going to change my pcv valve now and try to clean out my egr system. Looks like you encountered the stuttering before, this is the first time i have seen anything about it. Thanks
Thank you so much Walt. This is my problem.
My husband helped me do this. When we took off the EGR cooler it was so full of carbon we couldn’t see through it. It took several cans of break cleaner and still was clogged in most vent holes. We finaly used OVEN OFF and that was remarkable how fast it broke all of that down. In the end we cleaned almost every passage, except a few on the edge of the inside of the cooler. After putting it all back together it improved the performance, but never got rid of the shake while accelerating at times. Even though we disconnected the EGR sensor like you said and ran it and the shake stopped, this cleaning didn’t fix the problem. We tried then removed the EGR plug again and we immediately had this shaking problem. So even though the cleaning helped the performance of the car it did not affect the shaking misfire it only improved the acceleration and made that smoother. It was so incredibly frustrating to have done that hard work and it didn’t fix the shaking misfire. Getting that EGR cooler off with no easy task. Just as a sidenote I also replaced the PCV valve since it was a inexpensive way to also help improve the performance of the vehicle. I am also going to add a oil catch can to help prevent the oil and fuel from traveling up to the EGR.
I have the same issue. I took apart my stuff in the winter (a week ago). Hard work yes. But I didn't have clogging in the cooler, the valve, intake, pipe, or anywhere else. Anyways, I cleaned everything, so it was even cleaner. But still the same issue. When I remove the plug on the EGR, it does improve, almost entirely - I still notice a very slight shudder on slow accel, but its nearly imperceptible. I've checked a number of other things - wiring, ECM to EGR, ECM to MAF sensor - all good. I've changed the throttle body to a good used one. I've checked the EGR motor coil resistances, all seem fine. The car gives no codes on scanning, no warning lights on the dash. The problem does seem to increase a bit as the car warms up, and the problem is exactly as he describes it in the video, except its not there only at operating temp. Its there all the time. Shudders, and engine rattling, low power, only on slow acceleration.
@@lyndonthan4350 after still having the problem of the misfire shaking I then tried what another UA-camr suggested and ALL of the misfire shaking and codes went away and it’s been several months now with no problems.
That suggestion was to remove the lid to your coolant reservoir. Flip it over and remove the black “O” ring around the stem that sticks up from the middle of the cap. Put the ring some where you will be able to come back to it in the future. Put the cap back on the coolant reservoir. See if that makes it all go away.
Awesome, probably just saved me a fortune at the Toyota dealer!
Went to the mechanic they told me bearings where bad. The i research there no bearings in my engine. So I cleaned the egr then had little shake. After watching this video this fixed my problem thank for posting this video saved me alot of money
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Technically yes there is bearings: main bearings, wheel bearings and camshaft bearings. Not sure what bearings was your mechanic talking about though.
Thank you this worked for me
I just spent $500 yesterday and same problems, I saw the mechanic do what you did, but I don’t think he went to the microscopic detail of cleaning the EGR and the little sprayer
I cleaned my egr, intake manifold, egr cooler and pcv. No problems so far
Success hurrah update after all the attempts at diagnosing this rattling ice engine I finally fixed it?, it wasn't the intake manifold nor EGR valve nor cylinder head gasket or as I suspected a faulty Throttle Position Sensor.
I am a retired mechanic with many years in industry so I may be rusty but I do know what I'm talking about and I hope this story helps others avoid getting ripped off.
I had replaced the spark plugs in its service along with oil and filter, there was zero indication of a head issue as no fluid loss, no smoke from exhaust, no overheating, no oil in the water or visa versa, I did get a code multiple misfires which after clearing a few times settled on misfire detected on Cylinder 4 I moved plugs around but fault came back still saying no4 so I moved the coil packs and still it said no4 so not plug nor coil pack.
I blocked the EGR with a thin blade and the fault was still there rattling and a new code "insufficient flow through EGR system" I removed the blade, I also removed the EGR assembly thoroughly cleaned it, and the pipe to the intake manifold and used long brushes to decarbonisation the manifold once removed, I also cleaned up the throttle body and bought the specific cleaner for the MAF sensor, all of the above were dirty and will have benefitted from the good cleaning but they weren't the cause of the shake rattle and roll between 1450-1550 RPM so what else was there?? the injectors are electronically controlled pulse so as it was an easy test I dismantled just enough to remove them and move the one from no4 and put it in no1 cylinder, reassemble clear codes and run engine, fault obviously still there but importantly the fault code had moved with the injector, just to double confirm I repeated this process this time putting suspect injector into no3 cylinder and sure enough the new code said misfire No3, so I ordered a aftermarket set which were about $80AUD delivered, I installed them this morning and once the system depressurised the engine ran smooth, I erased codes and disconnected both battery systems to enable the car to reset to factory, at least that's how some forums recommended a full reset, after reconnecting batteries and trying a few times to get car to start it finally did and was smooth so I boxed everything up final check for fuel leaks, all good, out to road test.
instantly she felt like a new car switching between ice and electric smoothly, acceleration back to full power, cruising excellant, no sign of feel of a misfire, no rattles bangs pops or shakes, it quite literally was perfect and a massive relief I had finally found and fixed the problem, shame my ODBC which has the Lexus software installed couldn't pick up the faulty injector out of the gate would have saved soooo muuuch time and effort, all up though it has cost me several hours researching and testing but less than a couple of hundred dollars to fix, heaven knows what a Lexus dealership would have tried to screw me for.
I just have one tiny issue since reconnecting batteries there is a warning "Check Hybrid System" which is odd as on road test pressing the DISP button with right thumb on steering wheel I can see the system switching exactly as it is supposed to charging discharging and switching ice to electric and back, I feel there isn't an actual problem because there wasn't prior and this is just something that needs resetting so a little more research unless anyone can give me a clue.
I hope my story helps others having same issue, I thank all forum inputs but nobody suggested injectors so maybe this can be added to list to be checked when encountering this mysterious shake rattle and roll of the ct200h.
So glad I bumped into this video. I bought a used prius this very day and have many problems, one seems to be exactly as described, slow accel vibrates but full throttle is smooth. EXCELLENT video👍👍many thanks.
What would you suggest maintenance wise for a prius that has 340000km and was most likely not well taken care of?
Thx again
Benoit Chartrand did you fixed the problems ?
I have the same
@@mmoon1860 Hi, I have cleaned the air intake 2 days ago and it seems to have done the issue. Hasn't done it since but didn't do a good test yet.
Just did a complete clean out of the EGR cooler, EGR, intake manifold, and throttle body on my 2012 Prius. The EGR, EGR cooler and intake manifold was caked with carbon deposit. This was a big job but necessary maintenance on the 3rd gen Prius. My Prius is has 152 K miles and still running great. This would be a good time to do the spark plugs also if you already have the EGR cooler out.
any misfire prior to EGR cleaning?
pao111784 No, I did the cleaning as a preventative measure. But the EGR and EGR cooler was quite dirty with carbon build up.
good to hear that you didn’t have any codes or misfire. thank you for sharing with us.
@@Adam-oo7tn The Prius ran fine after. It now has 167K miles on it and ran perfectly.
Thank you so much I went to Toyota and the told me to replace the whole engine
Amazing thanks!!
Gr8 job !!!
Amazing tip, I’m having super troubles with my 2010 Prius. seems like the Shaking is getting worse, and the coolant is emptying out slowly but no leaks: I took it to a shop and they said I need to replace the whole engine for a new one. Yikes!
Also had another mechanic check it out today and he said that he needs to take the head gasket to the machine shop or he won’t touch it. SCARY...
I will try this out myself, feeling a bit intimidated with all the hoses 😬. I hope I am able to connect them back correctly. Hahhahaha
I'm getting the same problem after cleaning Everything out and replacing the EGR cooler. I read an article that if it gets really clogged up and misfire starts then trouble starts in the piston/engine and engine coolant starts to leak into the engine, not good. So the head gasket must be replaced ASAP or if it's real bad then yeah i think time for new engine or car, but hopefully people fix it before it gets worse. I'm trying to confirm if it is the head gasket. I drove 1,000, well now 2,000 miles on it and very concerned. Toyota failed this EGR cooler part for long term use it seems.
It's the head gasket
I had two mechanics do this head gasket replace. 6 hours. Way to big of a job. $1500. Wish I cleaned the EGR cooler sooner.
My 2010 Prius has been doing this for about a year to the point where I can hear knocking in a piston/rod. I blame the well known oil burning of these engines that caused this, and now at least I can get the EGR system cleaned up. I already replaced the spark plugs and all the coils, but I know I have a big job ahead of me with that clicking. *sigh*
@@napynap maybe oil catch can mod would help prevent this too but I have not done it yet. 238k. Going to read about engine treatment fluids if that is helpful I don't know. I was so hoping to avoid this when I first got my Prius and unfortunately $1500 gone to replace HG.
Wondering if any thoughts with the Fel-Pro EGR Pipe gasket to Intake Manifold having the metal screen guard? Guessing it's an improvement... though wondering if to expect any difference in maintenance or????
Thanks for this video do you think that is my problem is it doesn't shake every time I slowly accelerate. I'm not getting a check engine light but I did change my spark plugs and the ignition coil in cylinder 2 because the code I was getting did say misfire. Thanks again
It was happening to me and today it started rattling and never stops. So I stopped driving it, and got misfire lights. Coolant level is still almost same. I m hoping not a blown gasket?
thanks you
Hello dear your video was awesome 👍
But I have a question as my Prius 2011 in New Zealand feel like missing when the engine starts after the hybrid battery discharges. So I changed spark plugs but it went ok for sometime, but now again as I am driving it's missing. Lyk I can't explain what's missing, misfire or hesitation are they all same ? the display of eco mode also shows the missing with the bar increasing & decreasing in the meter !! What might be a problem ? Can u help 😀
wow thank you!!!!!!!
Hey can we use any sprays before cleaning the manifold because here it is $400-$500, without opening up the manifold
Is the toyota 2.5 hybrid a good choice? Are there any faults with that engine? Thanks
I have disabled my EGR system by removing the magnet in the EGR Valve that operates the worm wheel mechanism, it's ok for engine?
How long can you drive the prius with the EGR disconnected to test it?
I have exact same problem, but also leaking coolant. Do you know why? Thanks!
Will you recommend oil catch can?
How long can you leave the egr connector unplugged? Its too cold to work on car
Do I understand this correctly? If I unplug my EGR like you do at 0:26, and the engine still shakes hard, does that mean that the EGR pipe and intake manifold are not the problem?
My prius does this on the mornings. I changed spark plugs and coils. U think its still the intake thing?
Is there a way to clean that out without taking the motor apart like you did? like can I just pour some stuff into the gas tank?
Ciao boss volevo chiederti se un consumo di liquido del radiatore può essere attribuito al radiatorino del egr o è solo trafilamento testata? Ciao da Roma
Can the EGR be blocked off and just mapped out of the ECU?
What if you did all that and you still have that problem? So dose that mean head gasket? Thanks for any help
Hi I have 2014 toyota aqua, I'm having issues at times when I accelerate and let go my it over revves even though my foot is not on the accelerator, I find this very strange does it have anything to do with gear box or throttle body?
HELP PLEASE 🙏
Thanks for this excellent video! I am going to try cleaning the EGR as you did here. I drive a 2013 Prius w 197,000 miles. I'm wondering if there is any chance a fuel filter can cause the engine to idle roughly? I don't know if my fuel filter has ever been replaced and I used some old gas recently. I don't see much about people replacing fuel filters on Priuses.
Mine was replaced bc it had started to leak, but that was not the issue with the rattling.
How to change a fuel injector please?
I’m having this problem in my 2010, when I disconnected the EGR the problem (engine rattle) got worse.
Have you seen the use of PCV oil "catch can" on Prius. If so, results?
What the name of that cleaner spray?
About if you go at 60mpg is shaking can be that ?
Hi GasketMasters, Can we use Brake Cleaner? It is much easier to clean and evaporate fast. I used brake cleaner to clean electronic contacts and it works fine.
rondhole yep
Hell yeah I just disconnected my egr and no problems.
The first time this happened to me I took it to the dealership and they could not figure out what was wrong with my car And it cost me $1200. I currently have 250,000 miles and I’ve had to clean out the EGR air intake and replace the EGR Radiator. And this is on my 2010 Toyota Prius.
Did that solve the issue?
@@jfevrier9593 yes, but eventually my head gasket went and about a month ago i replaced the engine with a JDM used engine. I had about 277k miles on the car when i replaced the engine. The EGR causes many problems with many cars.
It's a pitty all the Prius head gasket videos were removed.
they are not removed !
Hi, I have the same issue. do you have a video with the rattling noise before doing the above cleaning and after?
It’s hard to make the “before” video because you have to be driving for it to happen.
And the “after” video is just it driving normally.
What if we turn off the egr?
From the ecu of the prius
Will problem solved then?
So in theory we should disconnect EGR all year then a week before inspection hook it back up. Keep the system clean LOL. I certainly cant clean the intake if its not working. What about the cooler. I bet it stays cleaner if there is no flow though there.
anybody knows the name of the cleaning spray? what is this called?
The exact same problem I have with a '13 Prius V.
Pls I seriously need your help. My location is Nigeria. There are no mechanics here who can really work on hybrid cars.
For the past 2 months, I have been having rattling and knocking sound. With no error codes. I cleaned the whole egr systems, cleaned injectors, changed spark plugs, cleaned throttle body, cleaned PC valve, Cleaned inlet manifold, I have oil catch can installed for about 5 months now. Upon all these, the car is still rattling and making knocking sound. Especially when it's charging the HV battery.
If I drive fast the sound disappears.
My coolant doesn't shot, my engine oil doesn't have water in it but I noticed the oil does shot. So I can't say it's blown head gasket.
And today this new incident happened.
Now if I remove the 12v battery head for 5 minutes and put it back the car starts on ev only after 3 to 5 seconds then car trys to start the engine and the ready light goes off and check hybrid system light and other error lights comes on on dash board.
Is this a sign that my engine knocked?
Will Changing the crankshaft position sensor solve the issue?
What exactly should I do?
The car has 145,000 miles on it.
The error codes it shows using toyota techstream now are P0335, P0A0F, C1259, C1310
Thank you. I'm new to the 3rd Gen. I have a 2011 CT and having the same issue. Has anyone found this to be a permanent solution?
Unfortunately while it is THE solution, it's far from permanent. I have to do mine every 40k at least (even with an oil catch can installed). It's best to do the whole EGR, EGR cooler, pipes and the intake manifold all at once.
Great video, My 2010 Prius shut down while driving on the freeway. overheating light came on and the triangle light then all the lights. I noticed the hybrid battery was very low or dead. Let the car rest and it started working again and battery started to charge. Have you had this happen before? Help please
Have u checked the date on your 12v battery.
Good day. I unplugged my egr still the noise did not stop. I cleaned the 4 holes, cleaned the 4 injectors, changed plugs still it still misfires.
I noticed that when I removed the inlet manifold the cylinder number 4 inlet and outlet valves are about half inch clean at the top. Which I can show pictures. My car is not shorting coolant. It's not over heating. It not loosing power. Just the noise when warned up at low speed.
What else could still be my problem pls?
Try injectors
Hey! Is it also possible that this rattle happens with a cold engine? My engine starts fine but when I drove out of the parking lot the rattle begang and dissappeard.
When I drive on the highway (100 km/h) nothing happens. But when I go back between 60-80 km/h rattle starts again.
When I give some gas the rattle dissappears aswell. Misfires in cilinder 1 and 4.
Any idea what this could be? Thank you in advance.
Hi , I have the same problem. Did you figure out the issue?
@@aci620 Intake manifold and egr were clogged. Cleaned it and drove well again. Succes with yours!
I’m still having this shaking on slow RPM/speed and when parked/idled state. I’ve been getting 1, 2, 3 cylinder misfire and p219a air fuel ratio imbalance. I’ve replaced
-cylinder head gasket
-intake Manifold Gasket
-spark plugs
-pcv valve
- cleaned intake manifold EGR passage, EGR pipe, valve and cooler
But still shaking 😞 I’ve unplugged the EGR valve plug but still having this shaking. I’m guessing it may be fuel injectors. But still don’t know the reason. Maybe have to do a compression test?
Do you know what could be reason?
Try change transmission fluid
You did not mention Ignition coil. Could be that.
Try the injectors
I did clean the intake manifold and the car still hesitates and shakes a bit especially in the morning…..
Question same synptons, but add oil is disappearing, could this be a blown head gasket?
couple things to check for with the common blown headgasket on the prius:
1: Death rattle on start up.
After letting the car sit over night, when you start it in the next morning there will be a *major* death rattle. You can not confuse this for anything else- It will buck and rock and shake violently.
Whats happening here is coolant is weeping into the cylinders from the headgasket, which doesnt like to compress- and the motor struggles to run for a moment before this gets blown out the exhaust.
If your car is doing this: STOP DRIVING IT. This death rattle can result in bent rods. If you catch it early- you can just replace the headgasket. If you bend a rod, youre repairing the entire engine.
2: If the above is true: Coolant will be disappearing. Check the reservoir, if its slowly going down- another common sign it could be the gasket.
As for oil disappearing: Sad reality, these cars just burn oil. TLDR on this is toyota uses fairly weak oil control rings. Typical thinking is that these control rings have slightly less friction, which means you cruise around at slightly less throttle, which by relation means slightly better emissions.
These work great- for the first 100~ thousand miles, but after that they start to gunk up and seize, which inhibits their ability to prevent oil from getting past into the combustion chamber. There are hybrid oil additive kits that can *help* clean this up, and they will help- but theyre not miracle workers. The "proper" way to fix this is to unfortunately rebuild the engine.
Hey sir, I cleaned the EGR and the 4 holes you showed (don't know the name) and cleaned the 4 holes where these holes are connected but it is still shaking while accelerating slowly..
Can you please help me?
i have the same problem, any thoughts?
@@Alan_Prinz someone just now told me to get transmission oil changed as mine has covered 129000 kms so it's necessary. One guy said it's fuel injectors problem, clean them and it will be Ok.
I'll try transmission oil tomorrow and will let you know
@@UzairAmirs How about your oil changing, did the problem solved ?
Hey I went to a mechanic who replaced the EGR but the problem was not solved... So he finally decided to delete the EGR from the ECU and the problem was solved. I would suggest:
Cleaning the EGR, manifold, spaek plugs
If this doesn't solve the problem better get it deleted... My problem was solved by deleting EGR everything else failed
Update: HGasket replaced and runs perfect now.
RESULTS AFTER CLEANING EVERYTHING - SAME PROBLEM - Very concerned I'm gonna either have a engine failure, weaken a piston rod, blow head gasket. So it's important i fix this ASAP.
(I cleaned manifold/egr pipe and valve, new spark plugs, clean throttle body, replaced pcv valve, and ALL fluids) AND REPLACED EGR COOLER: IT IS VERY IMPORTANT TO REPLACE OR CLEAN EGR COOLER EVERY 100K MILES +/- OR SOONER. Currently I'm guessing I may need the head gasket replaced ASAP!... reading into it now.
I'm still getting the engine stutter/vibration/misfire on low accel about a few times every 100 miles. So the issue has lessened a bit but I believe since I drove my car almost 2,000 miles now - perhaps the problem is worse (and simple cleaning or replacement no longer the solution). No codes coming up on the OBD scanner (before the cleaning it was a misfire on #2)
X
So now I'm hoping to take action before head gasket blows. My coolant level seems to be not leaking into the engine any more but it did go all the way down to the bottom of the tank once, but that was before cleaning everything (possible I was replacing the engine coolant and needed to add more? ...Scary... I monitored engine coolant temps, ok so far. freeway= 190-196+/- degree F.
X
Here is the important article to avoid engine failure. It says early Gen 3 (2010) applies to. I have a 2013. Not 100% sure if this is directly related issue but it seems like.
www.torquenews.com/8113/should-i-change-engine-or-head-gasket-my-2010-prius
Things to look for: engine coolant going down or leak (into engine) and misfires causing engine shake.
[ Not sure if necessary to replace the Water pump every 120k, but they say it has a weak plastic propeller, potential to fail, good idea to replace before or around 200k miles.]
Those are two indicators that we already have a failing head gasket.
Replace it ASAP to prevent permanent damage.
X
See nutzaboutbolts videos if people plan on keeping Prius long term. Good luck everyone. Seems toyota failed the EGR cooler for long term use as it clogs up real bad.
My Prius maintenance notes:
IMPORTANT: Every 100k Replace or clean EGR cooler (part #25601-37010 cost $270.79 toyota or $178 ebay. Every 100k clean EGR valve and pipe.
Prevents future engine overheat issues.
-Every 100k replace PCV valve and clean PCV rubber hose. Prevents future issues.
-Clean intake manifold and replace the gasket as needed or every 100k. See youtube video.
-Throttle body plate clean, Clean as needed.
-drain refill engine coolant replace at 100k then every 50k (buy 2 gallons for coolants)
-drain refill inverter coolant at 150k then every 50k, may change at 100k with engine coolant.
-Replace spark plugs every 100-120k miles
-transmission fluid every 50k to be safe (or 40 to 60k). Cost toy of Glendora 170$ or 120$ labor only. some people change at 5k then 30k then every 30 to 60k.
USE World Standard genuine toyota trans fluid only - 4 quarts
-replace engine air filter and cabin filter every 30k miles or as needed.
See nutzaboutbolts videos
Saw your video on why head gaskets tend to fail on prius at high mileage. I'm at 231K now. I think it is high probability that it is head gasket since I drive 200 miles a day. Hoping it just needed a new ignition coil on the misfire #2 but since I'm at 231K miles maybe head gasket replacement time. Coolant seems stable but there may be a very slow leak causing the misfire on slow accel about 2-7 times every 100 miles. Going to talk to my mechanic.
Good luck.
Head Gasket replaced and everything runs perfect now. 231K. Will keep you guys in mind and referring you to friends even though I had a local company replace it. Time to replace water pump, thermostat, and possibly inverter pump to prevent being stranded in the event of a pump failure.
so i just got the p0304code should I try this first? I have been experiencing a drop in mpg since aug and the code just happened
I would try this first. I seen this video after I changed the plugs and coil packs! This is what fixed my problem! I also changed the PCV valve while I had it apart and this helped with the oil consumption problem I was having also!
Use gun brush in those lil holes You need to clear the walls of those passages and that's what the gun brush will do It will come out to that big hole where the gold pipe fits then just go to the next port push the brush through so on and so forth He won't need tons of carb cleaner you're using abrasive brush save the chemicals cuz they're not really doing you a lot of good in the plastic
Can I leave the EGR sensor wire off until I get new egr cooler installed? Or is that important to plug it back in immediately after testing?
Thanks, this appears to be my issue. Cleaned the cooler once with 3 cans + oxyclean soak overnight at 130K miles and now at 230K having this misfire exactly. Thanks
Greg14852 make sure the small intake holes are clean on intake manifold first. Those are the smaller ones inside the 4 large intake ports.
@@gasketmasters thanks Will do. I also have low engine coolant, maybe slow leak but I will look tomorrow at spark plugs and ignition coil. Reason why I want to leave EGR sensor off for 2 weeks until my new EGR cooler comes in and I want to avoid the piston knocking noise on slow accel. and to avoid that getting any worse, but i suppose to the EGR sensor is important. The EGR cooler gets severely clogged with carbon overtime. I will clean everything and report back. Thanks [ Making a new post, replaced EGR cooler and cleaned out everything super clean and problem remains]
@@gasketmasters what is the main cause of cloged EGR valve? Is it the elbow pipe after the EGR valve or the cooler/radiator itself. Mine is only at 60k miles right now and not really eager to spend the time. Is it the driving style/short trip or just accumulation of long highway drive? Do you find these EGR problems from Taxi/fleet cars with low miles or private owners with 100k+ miles?
@@rondhole To the extent of my knowledge, and this does seem to be Very Important to either clean or replace to avoid engine overheat/blow head gasket, I believe the EGR cooler is the worse that gets clogged up every 100k +/- (maybe sooner) The EGR valve and pipe also need to be cleaned. I think it is just accumulation regardless. I think it's happening to all Prius' 2010-2015.
NutzaboutBolts on youtube have been very helpful.
@@rondhole Cleaning the EGR cooler is very time consuming it seems. First time I cleaned it, second time I replaced. Some clean it with oven cleaner or use pressure washer and report it's easier/quicker. The part is on ebay for $178 total or Toyota 300$ w/tax.
Can you clean that up using Marvel Mysterious Oil in the gas tank? My Lexus Ct200h is experiencing cold start engine knocking noise and dont want to disassemble and replace the intake.
Cold start shake is a head gasket not intake
@@gasketmasters will a head gasted sealer fix it? I am on a budget and can dont have 1200 to spend replcing it. Thanks
@@joselarrarte6964 never use that.
Jose Larrarte it’s probably a head gasket. Watch the prius knock video. if it’s doing that just replace HGasket. 1200 is not a lot when it comes to maintaining a car that will last over 300k if you just put the money towards it. If your engine is vibrating I think it’s okay but if the entire engine block is rumbling I guarantee HG...
@@Adam-oo7tn You almost know what you were talking about
Hello Master, hello all.
I have a issue with My 2010, i cant handle heavy aceleration, if i drive smoothly, give gas slowly, can get super spead, but when i push heavy aceleration the car fells like it goes to N and stop accelerate, but if i drop the pedal for 1 second, and then i try again acelerate but smooth, gives me any speed i want. Sorry for My yoda English, its no my lenguage. Thanks in advance everyone. Gbu
Just bought a Prius and doing maintenance, oil leaks galore....
What if the coolant loses with misfires in cylinder 1 and 2?
I know this is an 11 month old comment, so this is more for anyone else who sees this:
Blown headgasket.
does this happen when you start in the morning??
waiting for a gentle response...
Yes
@@gasketmasters now is 100% fixed?
Did anyone else get the p219a code before when it was misfiring
This is the 2nd time I've seen these gummed up little intake holes.
Happened to me 3 weeks ago . Had a misfire just on #2 . Turns out only #2 wasn’t as clogged as the rest . Cleaned them out and now runs like a champ lol
Yes. Usually only happens to the one that not as clogged because the air is diverted to it and throws off the Air fuel ratio
It is safe to disconnect EGR for long term?
Yes
No. The ultimate solution would be is to move the PCV to a higher position and install an oil catch can
Cant understand whats being said when i need to hear whats going on
With how low that coolant is id say it’s a head gasket
Any one have any idea why my 2010 prius is getting only 38mpg I did a lot of research but could not find answer and please don't say its the tires I have brand new ones.
Have you noticed if you’re losing oil?
@@gasketmasters nope not even a drop. A lot of people on prius chat talking about this issue especially on 3rd generation prius but no one has a definite answer when I called toyota dealers they said it was just wear and tear .
I only get about 40mpg because i always run it in power mode.
2010 Prius Gen 3 with 278,000 miles, had decreased mpg for years. Just got the water pump replaced and it restored about 3/4 of the lost mpg, which I didn't expect. That's just my unique case.
Just another reason to avoid GEN 3. One big engineering mistake.
I am having this exact issue. 2015 Prius 2 ex-taxi with about 370K. Idles fine, runs cold fine, runs 85 mph fine, and not throwing any fault codes. But occasionally, under a slight load, usually around 30-40 mph the drivetrain hammers so hard it seems like it's going to tear itself apart. It feels like "lugging" does in a manual trans car when shifted into too high a gear for the road speed. If I step on the gas to increase the load the issue goes away. If I let off the gas or step on the brakes to reduce the load the issue also goes away. I was convinced it was a trans issue or maybe that funky clutch damper thing. But I just took it out for a test and disconnected the EGR and I can't get the hammering to reappear at any speed. I'll tear it down as soon as I get an intake gasket and see if this solves my issue. I'll report back if so. BTW, not one of the self-proclaimed "experts" on the Prius chat groups mentioned doing this.
It seems like this was my issue also. I pulled the intake and one hole was so completely plugged that I couldn't even jam a screwdriver through the clog. I had to soak the intake in parts cleaner for a while to soften it up then I was able to get an awl through the clog, followed by a screwdriver and finally cleaned the thing with an old set of camelback cleaning brushes. Thanks for the tip!
Clean them and let the shit run onto the ground? Leave it in a bucket of gas overnight? Are you 80 years old or something? That's the way shit was done prior to the EPA and OSHA.