Question about 2002 Saturn Sl

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I have a 2002 saturn sl1. i cleaned out the intake manifold and throttle body, replaced all the gaskets and now it idles at 3000 rpms. what could cause this?

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Cleaning it out has nothing to do with it. IAC does which happens to be mounted on it.

Posted on May 22, 2011

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Battery died and replaced but now hard shifting, high idle and will suddenly quit running. Could this be the ECM?

Sounds like the air intake manifold gasket getting bad. Easy way to test this is when it is idling high, take a can of brake cleaner and spray it on the air intake, all around the gasket. If the gasket is bad, the car will change it's idle as the cleaner is sprayed on it. This happened to both of my 02 saturns. The air intake manifold gasket is located on the back side on the top of the motor. Very easy to get at and a very easy test. To locate it , look for the throttle cable on the throttle body. Look to the left of that and you will see the air intake. It's an aluminum manifold held on by 8 ten mm nuts. Right behind the fuel injectors. You can also use ether or quick start, and it wont take much. If the idle changes, you intake gasket is bad. Let me know how you make out

Apr 21, 2015 | 2002 Saturn Sl

1 Answer

2002 saturn sl1 rough idle,misfire,popping sound from exhaust. replaced fuel pump,fuel filter,plugs and wires no help

My 02 did the same thing. If I were you I'd first check for vacuum leaks and check the intake manifold gasket. They are known to go bad.Take engine cleaner, or brake cleaner and spray directly onto the intake while the engine is running. This is right under the fuel rail. Spray and listen for a change in the idle. If there is any change at all, the intake manifold is bad. Spray all vacuum hoses too. If that is not the problem you should clean the TPS throttle positioning sensor, and the AIC air idle control. Also clean the throttle body. These cars are known for this too.. First take off air cleaner hose, and disconnect the battery. On the throttle body TB you will see 2 10mm bolts. Undo them and the throttle cable. Don't lose the metal gasket. Take TB off and look at the back side of it. Is it carboned up? If so, clean with same cleaner making sure the 2 vacuum hoses are clear. Take the AIC off with a #20 torx screw driver. Dont lose the rubber O Ring. Clean it up, but dont try to move the plunger. Clean inside the TB where this plunger seats. Dirt can cause your symptoms. Clean it up good scrapping the carbon off the back of TB. The TPS is right above the AIC and can also be cleaned up a bit. put it all back together and it should run right.It's usually one or the other with these engines, please let me know what your test results come up with thanks

Jan 21, 2013 | Saturn SL Cars & Trucks

1 Answer

How to find and clean the IAC on a 2002 Saturn sl1?

First disconnect the air vent to the throttle body. The TB will come off with 2 10mm bolts. Dont lose the gasket. Undo the throttle cable, and 2 vacuum hoses on top. Be careful not to lose the spacer on the vacuum hoses. Take the 2 10mm bolts out and remove the TB. The AIC is bolted on the side under the TPS throttle positioning sensor. It can be removed with a torex socket or screw driver. When you take this off be careful not to lose the O ring. Spray the plunger down with brake cleaner and spray the throttle body down too, especially where the AIC fits into the flange. When you are cleaning the AIC Dont push it in or force it to move. It's not supposed to move by hand. Now, the back of your throttle body maybe [will be ] carboned up, you must spray this and scrape the carbon off. Get all the dirt off and make sure the vacuum holes are clear and the flap closes flush. Replace the opposite of removal. What are the car's symptoms? Over idling? If so, take the can of brake cleaner directly onto the intake manifold gasket. Near the power steering pump and across . Spray this directly on while car is running. If the idle changes at all, your intake manifold gasket is shot. These cars are well known for this , that is why I added that info. I just replaced my own last week. Let me know how you make out. If this was helpful, please rate solution

Jan 12, 2013 | 2002 Saturn Sl

2 Answers

In cold weather thecar starts`ok but the rpms go to 2000 and slowly returns to around 1200 and stays there

idle air control valve is suppose to let the rpms go high to warm the motor to normal temp,and then drop it to 1200 rpms

Jan 07, 2013 | 2000 Saturn SL

1 Answer

2002 auto saturn sl1 revs a little high, and shifts a little hard when going between gears?

I just went through the same thing and checked the air idle control valve, and the throttle position sensor. . took it off and cleaned it. I took off the throttle body and cleaned it. Listened for vacuum leaks. Then after the same problem persisted, I sprayed brake cleaner directly on the intake manifold gasket between cylinders 1 and 2 and just like that, the RPM"S went down. I need a new intake manifold gasket.

Nov 20, 2012 | 2002 Saturn S-Series

2 Answers

In my 2000 Saturn SL1 I am experiencing very high idle (2000 rpm warm - higher cold). I have cleaned the throttle body and the idle air control valve with no improvement. What next, replace the idle air...

You could try replacing the idle air control valve but I would obtain one from a local salvage yard, its cheaper and you are not certain if thats the problem, another thing i would check is your intake manifold gasket where it meets the cylinder head, if tha gasket is cracked or leaking it will allow excess air to enter the engine and make it idle higher, the easiest way to verify this is get a can of carb and choke cleaner and spray it all around the intake gasket area, if the engines idling characteristics change drastically then the gasket is bad and needs to be replaced if theres no change in the idle I would start looking for vacumm leaks and the idle control valve issue, which you specified.

Jul 03, 2010 | 2000 Saturn SL

1 Answer

2001 Saturn SL1 revs up to 3 rpm when in neutral

Try tighting up your intake throttle body there should be 2 10mm bolts where the intake hose attaches to the throttle body. I had this problem with my sons car 2002. It was an air intake leak. Be careful not to break the bolts. you my have to remove and reseal.


Apr 11, 2010 | Saturn SL1 Cars & Trucks

1 Answer

I have a Saturn 2002 SL1 The RPM remain at 2500-3000 RPM when shifting gears. After abotu 30 seconds the RPM will come down to 900 while sitting at a light. What would be the best place to start chasing...

Sounds like a dirty IAC (Idle Air Control) valve. It is located on the throttle body. Remove it and clean it throughly as well as the throttle body underside as well where a lot of carbon build up is.

However, since it is such a high idle, check for any vacuum leaks. Check your hoses and lines running inside the engine bay, specifically near the intake. Spray some carb cleaner around while the engine is running to see if you can hear or see a leak. Check the intake gasket as well.

Mar 29, 2010 | 2002 Saturn Sl

2 Answers

Saturn SL 2002 High Idle

Intake manifold gasket. Leaking where intake meets head.

May 07, 2009 | 2002 Saturn Sl

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