P0300 Random misfire on a chevy cobalt ..
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- Опубліковано 23 сер 2024
- This video shows some tips on what to check for when having a misfire code.
-vacuum leak
-O2 sensor
- bad MAF
-ignition wires
-coils
- plugs
-injectors
-compression
But in this video I will be showing what I checked for before i found the issue ..
He is just a perfect instructor who basically breaks everything down to non mechanics.We can actually understand the whole concept.Very intelligent and detailed
One of the good ones on UA-cam for auto repair. He’s a good man. Ty for the video my friend you’re knowledgeable and you explain everything and why you’re doing it. Thumbs way up!
JB, I am left speechless - "WOW" ... thank you so much for sharing your expertise... This is definitely a 10 out of 10
Sounds like a young and knowledgeable guy. One of the better diagnostic videos. Good job champ. Keep them coming.
Most excellent technician. Good ones like you help me keep my families cars on the road in these financially trying time. Thanks.
Great video n instructions .. my car doin the same thing .. I have a 2006 Chevy HHR .. both cars have the same engine .. every time I give the car gas it hesitate n be shaking real bad .. I couldn't never figure out what it was because it never throwed the code to I took it to a mechanic shop that has the big computer to read the computer .. and bam it picked up the po300 code .. because I took it to AutoZone it wasn't showing up .. I took it to advance auto part it wasn't showing .. them obd code reader are grabage trash at those places. But thank God I took it to a mechanic shop n they put the big computer on it n the code came up to. No I just gotta go get it fix .. but one again great video bro .. u explained it well and great 💯
this video is great..still stumped about whats causing my rough idle..replace plugs and coils already and clean MAF...but just learned about IAC...ill check that out now. this video is still amazing even though I havent pinpointed it yet cuz I learned so much Thank you Man!
Good job bro my shit is sounding crazy about to use your vid as a guide.....you dyi youtubers are Life and money saver thank you ....help more than you kno
Thank you for the nice video so helpful I might have to replace my ignition coil on my 2006 chevy hhr . Keep up the good job. God bless you.
THANK YOU FOR SHOWING HOW TO REMOVE WIRES 👍🏼 help me a lot
Thanks for the information you're very knowledgeable
Thanks for the testing part.. very useful
Great job on this! I love this video. I hope to see you in more videos :-) You really helped me out here
Thanks for the informative vedio. Is it true that a bad ignition coil will affect either cylinder 1 and 4 spark plugs or cylinder 2 and 3 spark plugs. As to your example spark plug 1 and 4 were not sparking.
Great video. Thanks
Well done video, Sir!!!!
Catalysts converter I bet is messing up? That coil pack might be cause it?
Any advice on a U0073 code? Everything started when I had s misfire, changed my plugs, coil packs, and valve cover gasket. Ran great and then got the U0073 code. It’s a no communication bus a off code. Got a new battery, new tcm, checked all fuses, new ignition switch,new maf sensor, checked wiring and grounds on tcm and ecu. If I clear the code It will run great for 3 on/off cycles and then the code comes back on? When code is on it goes into safe/limp mode and you can’t drive it until you clear the code again. Any ideas on what my next step may be? I’m going crazy and broke trying to fix this! Maybe a sensor or solenoid? 2006 Chevy hhr
2 things: His Misfire was a simple/ fast fix. And secondly why switch the screws out to TORX? Same thread pitch? Even so; Its uncommon? I dont like having more tools then I need?
Fantastic video!!! Thankyou
Great video!
Que cables le conectas cuando chequeaste los capachunes de las bujías ???
Thank you for the film. Can you tell what grease goes inside of the ICM and possibly where do you apply it? In my coil compartment ( to the very right under the bigger connector) for the ICM there was a blob of some grease. Is it supposed to be there? And if so what grease is it? For the new ICM AC
Delco gives a pack of grease to put on the female connectors, but where exactly? And nothing said to put into the coil compartment. Do you put any grease on the metallic plate of the module? My original Module is the same (2003 Chevrolet Cavalier, Eco Tec 2.2 engine). What is that yellowish crystallized stuff in the old coil pack? It is the same in mine.
Dielectri grease should be use and only should go on the connectors
@@Jbolanos10 Thank you, I also found through some research that this ICM doesn't need any cooling w/grease since have inside cooper slug sink under transistors (as far as I can understand). So just dielectric grease on the connectors to prevent water.
@@olenaerhardt7725 yea that’s pretty much to prevent water or corrosion build up
@@Jbolanos10 I also think so, thank you.
I have a 09 chevy malibu 2.3, it also has a misfire but it's very random, no code while the engines running but it will idle a little rough sometimes at a light and will jerk. After a little it'll go away, took it to a shop and they couldn't duplicate the problem. Started out by replacing the spark plugs. It accelerates and drives fine just at idle it has a slight misfire
No codes while engine running huh?? 🤔
Try cleaning the throttle body , make sure to disconnect battery before you remove and start disconnecting harness ...
If you don’t disconnect battery you might have to do a relearn and it’s not really hard but just to save you time
@@Jbolanos10 the throttle body did look a bit filthy I'll give it a shot. Just weird how random the misfire is, sometimes it does sometimes it won't do it at all which what happened when it was taken to a shop to get looked at
@@knighthore3457 😂!!! I know right , there’s been a few time that it has happen to me with one on my previous car, car be acting up when you driving but as soon you take it to a shop it jut starts working right away and won’t do it anymore
Thank you for video was very helpful except I would like to have watched you put coil pack back on the car
Im sorry , but glad it was helpful
I changed coils, spark plugs, fuel injectors, mas sensor, map sensor and still getting PO300 code and the care has a rough idle. help
Hey how's it going?? I have a 2006 Chevy Cobalt and I'm having problems getting gas up to the top also when I press in the fuel valve nothing comes out have replaced fuel pump and spark plugs but still no luck can u help wit some tips on trouble shooting
You replaced the fuel pump and there is still no gas comin up to the valve !?! Ok so the first thing I would do is check for a fuel pump fuse and relay .. if they ok I would check for voltage on the harness going to the fuel pump.. if you replaced the fuel pump and came with new harness most likely the polarity on the new pump changes so make sure thr you change the cables if it comes with the ones and see which one goes where
I got a question? How do u check the transmission fluid?
jimmy hall there should be a 10 mm screw in front of the transmission ... not sure if it’s with the car running or off you take it off completely and check if it spills out then is full if it doesn’t is low.. to add there should be a big screw on top of transmission like size 19mm you add from there..
@@Jbolanos10 yeah yeah ur right but ur close its an 11mm. To loosen rhe transmission fluid drain. 4 the 2.2 eco tec 4 cylinder!
Thx guys
What causes my colbalt to guit when I stop at a stop sign or just idling in park . But when I'm driving down the road it runs great .
Could be a vaccum leak or misfire
That is what I was told. Broken nipple or missing. Mine does the same runs great but come to a stop it wants to die. Have to keep my foot on the gas just a little.
❤
does the 09 Cobalt LS 2.2 actually have an IAC sensor? or is it part of something else on that version? If it has one not sure where it is located but I assume it would be on or near the throttle body
Not sure, I’ll see if I can look it up at work tomorrow or today and I will let you know I it has one
@@Jbolanos10 Thanks so much dude!
It's the sensor connected to the air box where your air filter is.
I really hope new plugs were put in, they were fried. Probably all it needed
I have a 2007 chevy cobalt it's has a random misfire I tried everything no luck what should I do? I put new spark plug even replaced fuel pump
Rudy Paul if you already replaced the plugs,coils, fuel pump .. why was the fuel pump replaced??? Is any of the coil not firing up?? Do you have a catalyc code???? Clean your Maf and IAC sensor if problem still persist a cam/crank sensor could be related to... but using a compression gauge check on each cylinder should be greater than 120
hey man good video
but i have a question maybe you can help me out but my cobalts check engine lgth blinks only when i go faster any chance you migth know or anybody can help me what is the problem ..if is a missfire or something more then that ,,??
thanks
If it flashes it got to be a misfire going on..
If no check engine light is on, get you a basic code reader for like 30$ and plug it in when it flash you should have at least a pending code ... or if you have had the plugs and coil replace, it could be a clogged injector or bad, dumping to much fuel
What do you ground the spark plugs to?
Any ground
Better Put Compression last place on the description lmao
I got code do cylinder 4 misfire I replaced coilpack and spark plug the chek ingen went out but is still giving the code for cylinder 4 misfire
Might have to remove and clean your injector … use a spark tester to make sure your coil getting voltage
Should show the injectors with just power without trying to start and check for leaking injector
How long did this repair last?
Till this date car running ok, the cat code came on p0420
What happens if you don't ground the spark plugs?
Bill Farmer you won’t get spark and wouldn’t be able to test if the coil is working
@@Jbolanos10 Thank you.
I can see the immediate problem before even going any further into the video.....the throttle plate is stuck open.....so my guess is you either cleaned the plate so it could close or you replaced the throttle body.
The problems was a bad coil pack..
there was no throttle body codes, but definitely don’t hurt to clean it
Ступицы от каких машин могут подойти к кобольту?
я понятия не имею, о чем ты говоришь
Hi
Heyyy
My question is. I’m getting a P0171 code.
Christopher Bradley hey a p0171 is a lean code .. I would check the mass air flow “MAF” and spray it off really good and while you on it, also a good idea to remove and clean the throttle body ... before doing so, disconnect battery cables for like 5-10 mins
What would the next step? I replace purge value and MAF. If code comes back.
Christopher Bradley purge value??? You mean purge valve . And if codes come back look around and listen for a vaccum if no vaccum could be o2 sensor , clogged catalyst or low fuel pressure .. a fuel additive should help a little
I don’t like the sea foam stuff not really a fan of that or Lucas one .. there is one that I like more is call cataclean from auto zone is around 23 dllrs... read instruction .. add the 1/4 of tank and drive or 20 miles