Question about 1993 Saturn SL2

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1999 saturn sl1 rough idling

My 1999 saturn sl1 began to idle very rough and when i checked for the error from the check engine light it came up as a problem with the idle air control valve. i bought a new valve installed it. still the engine idles roughly, though not as bad as before the engine seems to drop rpms and shake when idling. what else might i be able to do to fix this problem?

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A pit\ston might not be working properly

Posted on May 29, 2009

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Unethe problem is ?

Posted on May 26, 2013

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Replace the temperature sensor $15.00 auto zone
most commmon problem with rough idle if that doesn't work EGR valve is the only other thing it could be other than plugs or bad wires or possably dirty
injectors however that sait i would start with the most ovious/inexpensive temp sensor it worked for me let me know how you make out Jeff,

Posted on Jul 23, 2012

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Posted on Jan 02, 2017

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2 Answers

I have a 1992 Saturn sl1.Idle goes up and the check engine light goes on and the idle goes back down.


Take your car to a mechanic shop or autoparts store and have them read the computer.

Jan 25, 2017 | Saturn Cars & Trucks

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Why is the service light on in my saturn sl1?


sc1 means saturn coupe with a single overhead cam engine sl1 means saturn sedan with a single overhead cam engine same engine and same parts for both these cars

Dec 10, 2012 | Saturn SL Cars & Trucks

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My 1999 saturn SL1 would not start w/o a jump. Then it began to start rather roughly now when i turn the ignition all i hear is 'electricity'. i have to get a jump to get it going


Sounds like you need to replace the battery. However you may have another issue and that could be your alternator. If the alternator is not recharging your battery while the car is running, then a new battery is going to die as well.

May 20, 2010 | 1999 Saturn SL

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My car is a 1999 Saturn SC1. The engine races and takes a looong time to return to idle, and only fully returns to idle when the car stops. And the Service Engine Soon light is on. I'm pretty mechanical;...


mcdevito75 here, You can check the cold idle switch or if equipt the idle speed motor, Where they are exactly is ?? try to contact a Saturn Dealership or auto parts store.

Nov 21, 2009 | 1999 Saturn SL

1 Answer

Myservice engine light came today rogh in idle at light rpms seem a little high this is a 98 saturn sl2 I think engine is a 1.9


the check engine light means that a code has been set. the code will reference a faulty system that must be diagnosed and repaired. sorry for the vagueness, but there are e gads of codes that can cause the rough idling

most aftermarket parts places will scan the car for free. this will give you an idea of where to start.

May 11, 2009 | Saturn SL2 Cars & Trucks

1 Answer

2002 Saturn SL1 rough, sputtering idle - cylinder #1 misfiring


spray some carb cleaner on the passeger side of the intake manifold, right behind the alternator. it is very common for those to leak there and cause those exact problems

Apr 30, 2009 | 2002 Saturn S-Series

1 Answer

Rough idle after check engine code cleared


I would check for any vaccum leaks,
You can take a spray bottle of water and spray around the intake manifold with the car running at idle.
The idle will change and get worst if the intake is leaking.
The intake gaskets could be the failure. I know autozone can get into the computer and clear the codes for free.

good luck

Feb 01, 2009 | 1999 Ford Taurus

1 Answer

2002 saturn sl1 idle too high


Can be but also check and make sure there are NO vacuum leaks or broken vacuum hoses anywhere on intake. I would also suggest if engine light is on is to take this vehicle to an AUTO ZONE they will check by computer for this problem and let you know for FREE. When you get the code I would be more than glad to help you further. Don't guess you may be wasting money and time. Good luck and thanks for using FIX YA

Feb 01, 2009 | 1993 Saturn SL1

1 Answer

1999 saturn sl1 intermittenty lacking power under load, idles good, no skipping, no service engine light spark plugs looked lean already replaced fuel pump and filter. still the same problem exists.


have you had your radiator pressure checked? when there is not enough pressure to keep your coolant moving steady through the system it will cause the same issues.

Dec 03, 2008 | 1999 Saturn SL

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