Can you please tell me if I find an idle air sensor for a Saturn SL2 for less than $239.46? I have only found the part at a certified Saturn service provider at the stated price. THANKS! Marlene

https://www.google.com/search?q=2002+saturn+sl2+idle+air+control+valve+location

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Transmission shop is your only answer, parts are only required to be available for 10 years from the production date. Since that company also folded you are out of luck

Check coolant temp sensor.

does it do it at idle? if so... see if it has an idle air control valve if it does... replace

on the s series it was very common for carbon to build up inside the idle air control valve-IAC valve.there are too expensive and are easy to fix-buy the part so you know what is looks like the look at your throttle body(follow your air filter box tube to the top of the engine-the throttle body)the iac is right there.

my only guess is a vacuum hose leak. possibly a loose air filter housing, or the mass air flow sensor. look for any hoses unplugged. if nothing is noticed, try cleaning out your fuel system. if that doesnt solve it, then it would be something an experienced mechanic would have to come and examine it personally.

first determine if the car is actualy getting hot.dont trust the gauge or fan for these are controled by a temp sensor, if the sensor went bad it will tell you its hot. the other thing it might be is a air bubble trapped in the system

most likely this is the O2 sensor for that cylinder bank is defective.

Idle problem most likey a Coolant Temp sensor & connector.Cam covers very common to leak around the sides & down into the spark plug holes.Also all saturn s-series 1.9 engine consume oil.Most 1qt. per 1500 miles some more some less.Service Engine Lamp has nothing to do with regular maintenance.It's a malfunction indicator lamp.If it's on there is Trouble codes stored in the ECM.Auto zone free scan with printout.Hope that helps

i had the same problem, much money spent for nothing, it ended up being the temperature sensor on the side of the block, advance auto, had the part for 10 bucks,