Question about 1996 Saturn SL

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1997 Saturn SL1 need to know what these codes mean?

I just bought a 1997 Saturn SL1 for $500! The Service light was on steady, and the service engine soon light would blink on and off as I drove down the road in it. I changed the oil, oil filter, fixed the wheel bearings in passenger side wheel on front, and I also changed the spark plugs. Before I did all of this, I had the parts store hook up the little computer and they said there was a bunch of old codes coming up about misfire. They reset it for me, and when I left, the lights came right back on. I went ahead and did all the work I mentioned above, and then I took it back to the parts store to have it reset again. The service light came back on as soon as I started the car, but the service engine soon light did not come back on yet. So I got them to hook the computer back up to it, and two codes came up, but they couldnt tell me what they mean, so I hope someone else can? The codes are: P1640 Driver 1, and P1641 MIL Control CKT. Someone please tell me what these mean so I can get it taken care of. Thanks for your time! Wendy

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  • Anonymous Nov 09, 2008

    my engine light has been on for 3 months dealer scaned it

    and says i have a misfire on cyl 1-4 caused by carbon build up
    on valves they turned off engine light. i changed spark plugs and
    im using shell premeum fuell and 10 w 30 synthetic amsoil with a fram

    xg syn oil filter and have used bg 44k in the tank with no luck.
    engine light came back on my car starts and runs excellent
    any solution?

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  • 231 Answers

P1640 islow coolant / hot / ATF temperature lamp circuit fault
P1641 is cruise clutch circuit fault low fuel circuit fault ( 1997 - 1999 )
hope that this is what you are looking for and if so I hope that you take the time to rate this response.

Posted on Oct 15, 2008

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