Fix Saturn High Idle, Miss-fire - Its The Intake Manifold Gasket
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- Опубліковано 12 вер 2024
- Mark shows you how to diagnose these common problems, what the issue is and how to fix it for under $50. Save yourself from being taken to the cleaners and get all the clear instructions and what tools are needed to save your little Saturn
This is the best video I could find on this subject. It is very well done, thorough and intelligently presented.
Thanks Rob - anytime
Glad to see this video still helping folks 5 years later, on a car that is 21 years old. 🤣 Same issue for me. I watched this for the refresher, so thank you for that! Good thing I remembered that the intake manifold can be removed without removing everything else.
Thanks for the comment - uranum
I just found this video after my 2000 SL1 - got this code showing. I am trying to decide if I can handle this job or not. Excellent video and I appreciate the time he took.
Just did this job on my 2002 SC1 last weekend. This is an excellent video! My gasket had basically disintegrated and fell out in about 50 pieces. I am worried that some small pieces probably got sucked in. In any case, idle went from 2000 to 800, and Check Engine light went out. I did cut a few corners, however. I only removed the throttle cable mount, and the hard bracket that connects the manifold to the block. I was still able to pull it away just fine, and access all the nuts. Several really need to be accessed from below the car, and unless you remove the starter, you'll be doing it by touch without a line of sight.
Well done tator - thanks for the info - cheers
i have a 2000 saturn with the same engine and same problem.getting everything ready to fix saturday.great video it gave me a great idea on what im getting into.this car has 203,800 and will run even longer once this is done.
Wishing you the best of luck - keep fixin
This is actually extremely common in all 2000+ SOHC models due to the gasket being installed incorrectly on the manufacturing assembly line. With the thinnest part of the gasket being on the #1 cylinder, it's the first to leak. Cheap fix, and it does a work of difference for smooth idling.
Thanks for the info AJ
So anyways after we've taken half the car apart, theres the intake manifold gasket lol....good video, it's a lot of work but beats paying a mechanic.
Any day may friend
Thank you I’ve spent to much money and was just about to give up until I found your video this will be my final Attempt Can’t pass emissions test and it was a misfire code. Also coolant disappears But I don’t see a Leak could this be Problem ? If I were to do this job I would start getting all the tools that you used and parts ahead of time that way I can go step-by-step and get the job done quicker Without a headache I pray this finally takes away the check engine light and pass Emissions test while at the same time stop the strange coolant leak that I can’t seem to find
I want to thank you for posting this video. Im currently trying to solve the same issue. The car did need a proper tune up, but that did not cure the misfire. I was curious of the codes that your car was showing. My only hesitation on blaming the intake gasket is the one i have post the infamous p0341 code first. This is before the p0301 misfire code or p0507 high idle code. Im going to share this video with my customer and see if they are interested in me trying this repair. Thanks again.
Great video, but can I tell you about a similar problem I had with my 1995 sl1.
it had all the same symptoms as this one had, but without the sputtering miss. it had the high idle, hard starting, terrible fuel mileage and just ran really rough. I had it to 3 different shops and they couldn't find what the problem was, then someone said it might be a bad temperature sensor, and for some reason it doesn't show up on any code scan. To make a long story short that's what it turned out to be, its a 15.00 part that takes 10 minutes to change. one mistake I made was not knowing that there are two of them, one is for the instrument gauge, the other is for the engine control computer. The bad sensor causes the computer to think the engine is cold and makes all kinds of wrong adjustments to the fuel and ignition.
Excellent advice - thanks for sharing
The problem with the OEM gaskets used on 99-02 sohc engines is they are too thin. The updated gasket they eventually started using, which I believe they may have used on the older sohc engines previous to the years mentioned, is a thicker gasket. I want to say the thickness is almost double of what the paper thin one is. I don't think the paper one had the orange colored reinforcement around the intake port holes either like the replacement does. If you don't live in a salt belt area, you will probably get 20 years out of this car. Taken care of, I've seen some go 300k-400k miles, that's a lot for a four cylinder engine.
i have that exact problem with my 96 sl1 and i am not looking forward to doing the job but i know you are right on with the diagnosis thank you so much for the help ..by the way you canadians rock!! thanks again for the vid '' carry on Eh??
It's not that bad of a job - and the satisfaction you feel hearing that motor run right and the fact your wallet still has money in it is a great feeling - let me know how it works out for you - cheers!
Love this car - great quality except the gasket - no rust underneath all the plastic bits under the hood are in great shape and the parts are plenty and cheap - this thing should go 20 years
Mine just turned 18 with it's original gasket. Thinking on replacing this and coil packs..
I just did this same repair on my 2002 Saturn SL2. It is running perfectly and is so quiet at idle, I had to look at the tach to be sure that it was running. The car is no longer going slowly through coolant and the gas mileage is much better. I used a Felpro gasket and it was less than $20.
Nice job Will - keep fixin - Cheers!
@@carquestions Right on, friend! Greetings from your neighbor in Wisconsin!! Still waiting for summer!!
thank you. you have a good teaching style. right to the point.
Thanks Rick - Cheers!
Excellent diagnostic technique, my man.
Anytime Walt
Could you have used your OBDII tool to look at data stream and watched fuel trims as you added propane to see the enrichment change the data from + fuel trims to - fuel trims?
+South Main Auto Repair Sure but not as fast as using your ears - I don't like being overly dependent on scan tools - it dulls the senses
Oh I just assumed looking at the STFT data pid would have been great proof pointing to the vacuum leak.Thanks.
thanks for advise. Warning.. this job will take you 3-4 hours to complete. i only had to remove power steering and a bracket. everything else can stay on manifold to do this gasket
Thanks for the info
Yeah he did so much useless stuff on it it made no sense just gonna make people forget to connect certain stuff if all the bs he’s talking about
He is a true Motorhead'' you can learn a lot from this guy ' he knows his shit' man'!!
Thanks Bryan -
Nice video. These are the very symptoms I have on my SC1 right now. Next time I have a spare weekend it looks like I'll be following this guide. Cheers
Curious as to any problems that I might experience by running my Saturn without fixing these? Aside from maybe losing fuel economy or not passing emissions. I live 100 miles away from all the tools I'd need to get the job done
If it just happened - go get the tools you'll be fine - but don't drive for another 3 months like that or you might burn a valve
Finally i been trying to figure out y my car was doing this thank u
Hope it works out for you Tim - it was my problem for sure and is common
You made it look so easy
So did Wayne Gretzky - why ? he had seen plays a hundred times before they had happened because of practice at a young age - so he knew exactly where the puck would go before it got there - My Dad told me I was playing with engines by the age of 5 Cheers from Canada Eric!
Mine was running rough. And not breaking the best. Was a $5 break booster check valve.
$5 sounds okay. Was it a pain to fix?
I used to have a 99 sc1 and a 99 sl1 that had braking issues similar to that. As crazy as it sounds, it turned out to be a bad throttle body gasket. Idk how or why but that’s what it was.
Great video! Hubby would love to know, where did you get the ratchet that you used that allowed you to twist the handle, and and turn the socket when you were taking the manifold nuts off?
The ratchet can be purchased anywhere its nothing special - very common mechanics tool
I have a 2000 Saturn SL2 5 speed with the 1.9L L4 DOHC Vin7 engine, different engine from the one in your video. Would the same problem exist on my engine? The gasket/seal is different intake manifold on my engine. The engine is running a little rough in idle, just the same in your video. I had auto store check for any codes which popped up P0404. I did a thorough clean job on the EGR valve removing all the carbon build up and it appeared the valve was stuck. Its clean and working properly now but the same rough idle exist.
I tried the propane and it did not seem to change the rough idle. This has been going on for 3 or 4 months now. I did not want to go to all the work if the seal on intake manifold are or more reliable on this type of gasket /seal. Your thought?? Great video!
I have the exact same car. It's at the mechanic shop. They can't figure out why it will stall after you drive it for a while. I'm guessing the exhaust manifold is clogged and the air ports in the exhaust manifold. but I would hate to spend four hundred something dollars for them to clean that out and it still stalling. If you have any advice I will gladly like to hear it
Could this cause the car to stall or prevent it from starting ?
I'm thinking this is my problem too,
misfire started last week with CEL code of p0304 - cyl 4 misfire..
I have since changed plugs, wires, and both coils and no change.
I tested compression and it's cyl 1=180, 2=180, 2=180, 3=170
misfire goes away once car is warmed up
I rebuilt engine 67K miles ago at 160K miles, now I'm at 227K miles
I have a feeling this is my issue, I will try to test...
and that's an sc1, not an sl1, but chabuduo...
Does it have a high idle?? - above 700 rpm??? - let me kow
Great video! For some reason, I know 2 guys that work at different GM dealerships and all 3 of you guys look like you could be brothers...
BTW, that's a 3 door SC1, not an SL1 (SL = 4 doors). Probably doesn't make any difference on the procedure, though...
I got the same car (2001) in red and the only rust I just started to see is 1 quarter size spot in the hood, 2 small lines on the back of driver side window (top and bottom) and on the bottom of the back panel of the suicide door. That last spot is the only one I'm a little worried about.
Forgot to mention that, in my opinion, the worst move GM did was to drop the Saturn line. They still offer me over 2000$ Canadian to take my car off the road and I suspect it's because it makes all their other lines look bad in comparison.
Can you elaborate on your statement about GM offering you "over $2000 Canadian to take my car off the road..." Was this simply a trade-in offer or something else ?
Excellent video
Thanks
Very nice and descriptive video!
You the best!!!🛠🔩🔧👍🏻
Thanks Dani
Awesome video very well done
Anytime Jake
Not an SL1 Saturn it's an SC1. And I agree these are great cars I've owned a 97 and a 2002 my 2002 has been very reliable with very little issues. Down side is parts are pricey at least where I live.
Thanks for the correction - yes SC1
Hi Mark, my friend's got a 2002 SL2 1.9 LLO dual overhead cam hemi head "idling" at 3,000 rpm. Already changed the tps, idle control valve & cleaned the nasty oil soaked throttle body & same crap, still reving high. Any ideas? - thanks, - take care
I have a 02 Saturn sl1 manual. Whenever I press in the clutch to shift while driving the RPM's roar. Gliding in neutral to a light the RPM's go to between 1000 - 1200 RPM's. Sometimes have the code p0410 come up. I'm thinking I have a similar issue? Just cleaned the exhaust manifold and it was plugged with carbon.
You most likely have a leaky intake - I'd change the gasket - see the video
Okay, thought so. That's the next project. Thank you.
I got a P0112 on mine. The idle is high. I had not noticed any sputter. I have a 1998 Saturn SL1 automatic.
This is a very common problem - just change the intake gasket - let me know how you make out
It worked thank you so much for giving me the knowledge. You're awesome man!!!
No problem! Brandon - cheers from Canada!
Sir great video. Was wondering what's the name and part number of he tool to remove fan belt, thks
I don't recall sorry but any good tool place will have one
I doubt I will get an answer on this.
At the 7:35 mark, you’re disconnecting a plastic hose to a valve. What is that plastic hose called. I just accidentally broke mine. I can’t seem to find anything resembling that in the repair manual.
It's a molded vacuum control line - if you broke it - simply use rubber vacuum hose to connect the broken parts or replace it with all rubber vacuum hose - no need to replace the exact part - Cheers from Canada!
This is whats wrong with my 1999 saturn sl1, well that and the belt tensioner needs replaced. My mechanic groaned and said he would have to charge $1,000 bucks to fix it. So I don't really want to pay 1k to fix it and i don't want to send it to the junk yard.
Shop around to a small garage or put out an add describing what you need done
I have a 2001 Saturn sl1 auto. It will jump forward while I am accelerating sometimes. Don't know what triggers it. This same phenomenon can kick the car out of cruise control. Could this be a misfire? I have high idle and the problem is elusive or my mechanics are being lazy. Could it be the gasket? I have not done the test with the exhaust at all. The codes currently on my car are a confirmed p0410 and occasionally an o2 sensor code.
you mention there are 9 bolts for the manifold? where are they all. i’ve gotten 4 from top and 4 from bottom. we also just removed the one next to EGR that holds the manifold. it still won’t budge though. please help!
If you can't see them feel for them or use a mirror - you've missed one for sure
We ended up finding it and fixed the issue! She runs perfectly now, thanks to your video!
Glad to help Shannon
Pleaee help! I have a 2002 Saturn SC2, I have a high idle. When I start the car it will idle fine, but when I drive it, the idle sticks up around 1500-2000. It will go away if I turn the car off and back on. It will come back though. I have replaced the IAC, TPS, engine coolant temperature sensor, a pcv valve, patched a crack in the valve cover that was making a vacuum leak, had a flex pipe(before the catalytic converter) replaced, It doesn't throw a code. I am completely lost. It isn't a vacuum leak, I tested the system. I cleaned the throttle body a little. I haven't taken it off completely. Any help is appreciated.
Change the intake gasket anyway - it is the most likely cause
carquestions My significant other put a brand new intake gasket in our 2002 Saturn, and it's still revving up during idle, and will completely shut off if I'm at a stop sign, or red light. I'll go to start the car, and it revs up really high. On occasion while driving it, it will jerk, putter, etc.
Can you pull the intake manifold all the way off or is there more u need to do?
maybe a dumb question, but what is that orange handle tool called?
Serpentine belt tool
Hi, I just replaced an IAC in my 1996 Saturn SW2. Before it was shifting rough. Now, on park, it is idling just under 3k RPM. When I drove it, it was accelerating on its own. When I press the break, the RMP goes above 2k RPMs and then it slows down. What did I do wrong?
Change the gasket and check the seal
Replaced the gasket, still revs high 1500-2000 at times.
Must have another vacuum leak - check brake booster and other vac lines
Idle air control valve on throttle body
I actually have a 99 sc1 that's having the same problem. I went to auto zone & a code came back saying that my air intake sensor was bad. I'm also having a problem with gas mileage. I love my car & refuse to go of it. Please give some advice on how to fix these problems.
Danielle - go to a local garage - ask them to fix your problem and ask is it the same problem as this video (very likely) - tell them in no uncertain terms to go ahead with whatever their diagnosis is but to remember you're not paying to have them "try" and fix only later to say it needs something else - If they guarantee it will fix the problem then do it - if they are guessing then find a smarter mechanic
did you get any code on this ? because I do have noisy intake too and came out whit this code saying engine stall or near to stall please let me know if changing the gasket will fix the noisy.
Troubleshoot it like I say in the video - probably the intake gasket
I'm assuming this would be the same procedure for the 2001 SL1?
I'm convinced this thing needs it. What with the high idle when its finally warm.
Very very likely - I'd do it
I stopped by looking to find out why my sl1 idles high until I depress the brakes numerous times then keep it depressed. Releasing it make the RPMs go back up
You likely have this problem
Do you know of anywhere to get the manifold studs? Broke 1 half off on the exhaust manifold.
Bring a good one with you to an industrial nut and bolt supply in town - they should be able to get you straightened out
I am getting way too much fuel..I cannot find where the fuel injection pressure regulator is located!! ???
simply Google your make model year and size of engine - fuel pressure regulator location / replacement etc
So I’m wondering if I have a bad gasket like yours bc I have high idle and it’s revs high to 2k as I shift into park having to cut the engine soon as I go into p . My car also doesn’t want to slow down and shifts rough sometimes , for example at a stop sign I went from 20 to 0 in a distance of 50 feet and it was an awful sound , like it kept feeding the engine air while I was trying to stop so it didn’t want to downshift I’m assuming .. it’s a 2002 sl1 auto so I’m guessing that’s the case that the gasket is shot due to factory fault with the gasket manufacturing . If I fix this will it most likely stop all those problems ?
Devin - test like in the video - you very likely have this problem - fix it and let me know what happens
Was there any code thrown with this issue ?
My car started to vibrate, first on stops (all that started after quite abrupt stop, not really, but somewhat), then all the time I start it. Actron gave code P0404. Looking for the solution.
I have a P0507 code on mine, but my car doesn't sputter, it doesn't hesitate, idle is not high and I can't find any intake leaks
Are you sure about the idle - it should be 500 to 700 - look closely and let me know
It's about 700 or 800, when I first got it it was 1,500 would drop down when it got warm but still high, above 10,000, clean out the throttle body, replace both sensors it still idle high and I got a p0410 code, ended up removing the manifold it was clogged and ever since the idle has been fine, car runs good, idle is steady, funny it didn't give me a code when the idle was high, I just knew it was high
Then I'd change out the idle air control
I did that, I also changed the throttle position sensor, what I am thinking is that the previous owner had idle issues and what he did was manually adjust the idle on the throttle body
I'm pretty sure steady idle on these is actually 900rpm... That's what the Haynes says.
I'm looking up the part and it's coming up as a different one can you give me the part number please?
That 14inch wrench is so handy i imagine
Flex head too - must have for me - I use it all the time
what was the obd2 code?
Missfire codes
Is there two gaskets one in the front and back? For the manifold by the o2 sensor and the pvc
Yes there is another in the front. The intake is in the back, the exhaust is in the front!
The gaskets are not interchangeable. Just in case anyone wanted to ask.
Wish I could see fender protection covers
Quite right David - they were removed for filming - Cheers from Canada!
That's really cool. Thanks for such a great video. For real you really need that tool. Otherwise you will be very sorry. I didn't have it and it was more than helll
Cool, thanks Smiley - Cheers from Canada!
Same applies for 1.9l dohc?
I'd check to make sure Nick - use the method - or WD40 - cheers and let me know what you find
I have a 2002 sc1 that I need to replace the gasket on in the morning. Is this approximately the same setup?
yep should be the same exactly
Much appreciated. Just about ready to get started.
An easier fix, get a Toyota!
ASE Master tech, I've found that the best way to get the nuts & bolts right when reassembling is to keep them near the part, or near where they came from, restarting them wastes time, and they may still be in the way.
What’s the name of the component @8:52?
Sonder - they are Vacuum connections at throttle body - cheers!
@@carquestions thank you so much! And if I’m correct it connects the the evap solenoid ? I’ve read CCP solenoid but don’t know what that stands for.
@@sonder009 yes - Saturn just has a different name - Charcoal Canister Purge
@@carquestions awesome, thank you for replying and the help! My brother and I are in the final steps of rebuilding my Saturn engine so fingers crossed she purrs again.
@@sonder009 Great - let me know how it turns out -
Make sure it's no flammable things around your engine but you just put a whole propane tank in the engine Etc etc dot-dot-dot I feel like I've been misdirected
Its an SC1 not an SL1
I stand corrected - thank you
Lol petcock valve.. right?
yep - Cheers from Canada!