Question about 1999 Saturn SL

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Service engine soon light

My Saturn is a 1999 SL and it has 231000kms on it. the service engine light soon comes for a few days and then goes off could you tell me why this happens

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  • Anonymous Dec 07, 2008

    check engine light comes on for a few days the goes off had it checked for free at auto zone who said it was the egr valve also to check the egr relay

  • spooda Jan 06, 2009

    I have the same issue with the light, and no noticable performance problems. Still runs like a top. Goes off after 50 or so miles. Heading to Autozone to get it coded tonight.



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I cleaned my EGR valve and that fixed the problem

Posted on Dec 14, 2008

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  • Saturn Master
  • 77,499 Answers

This is most likely caused by what we call a lazy oxygen sensor (O2 sensor), have a trouble code test run on the emission system computer to find out which sensor is the culprit.

Posted on Dec 02, 2008


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Can i turn off service engine light in 1999 Saturn SL1?

Service engine light is telling you there is a problem, You can go to a local auto parts store like advanced auto parts or autozone, and they offer free code reading and they can turn off the light.

Or if you would like to know what the problem is you can take it into a repair facility

Apr 04, 2010 | 1999 Saturn SL

2 Answers

1996 saturn

the ses light might just be a speed sensor in the hub, and the wrench means service engine.

Dec 21, 2009 | 1999 Saturn SL

1 Answer

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

I have a 1993 Saturn SL that the service engine soon light comes on after driving at highway speed for 3 or 4 minutes. It goes out after not maintaining hiway speed. When I go to check for codes the...

It seems like it almost has to be one of two things. Either it's getting a little hotter than it thinks it should or it thinks it's not getting the right air fuel mix at those speeds. If, after slowing from hwy. speeds, the light lingers for a little, then goes out, I'd investigate option 1. If it goes out pretty much as soon as you let off the gas. Option 2. If you're pursuing the heat issue, flush the radiator thoroughly. Make sure the fan is working right.
Engine lights can be finicky. If the car runs fine and doesn't seem to be having any problems other than the light, it might be nothing important.

Nov 17, 2009 | 1993 Saturn SL

1 Answer

Saturn 1999 codes P0133 and P0171

both oxygen sensor codes

Sep 21, 2009 | 1999 Saturn SL

1 Answer

Service engine light on. Ping sound.


Jul 06, 2009 | 1999 Saturn SL

1 Answer

Check Engine Light comes every few days

Is this an O2 sensor code? If so then check the wiring to the sensor. Since the light comes on every few days then it is intermittent. Once the fault goes away then the light goes out. Fault comes back and the light comes on. Check the wiring carefuly to insure there is not a bare spot somewhere and is touching the engine or some other metal part of the car. Check the connector to ensure it latches firmly. Check the terminals inside both of the connectors to make sure thye have not spread open, are not dirty, or corroded. I once found a connection inside a fuse panel on a 97 LHS car that was not stripped back far enough at the factory. This caused and intermittent open circuit to the fuel pump. I have also reapired many a lose and dirty connector causing the check engine light to come on. Also some aftermarket parts like O2 sensors, MAP sensors, etc are made cheap and fail soon after installation. You get what you pay for. Cheap is not always a bargain.

Jun 14, 2009 | 2001 Saturn SL

1 Answer

Service engine soon; code to engine running too lean...

Yes, it makes sence. I have a 1998 Saturn SL too, and I had to replace the fuel pressure regulater on it. I also had the light go on every once in a while. I asked a guy at saturn, and he said that there was a sencer on the engine that is goes bad after awile. The problem was that it was made of plastic and it would crack, but now they make them out of metal. I don't remember what the sencer is called, but ask a guy at the saturn parts window, and ask him if he knows what the secser is called, he should know.

Feb 26, 2009 | 1998 Saturn SL

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