Question about 1996 Saturn SL

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Problem with idle

My car while driving will accelerate on its own. and while the car is just idleing the rpms will go up high. and the tempature gage goes up and down. does anyone have any idea what the problem might be? Temperature gage going up and down. When it does this it directly affects my rpms. Car has always idled funny since I purchased it. Before the temperature gage problem, would go to 2k rpms at idle for a minute then go back down to normal.

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  • kwiklip Jan 19, 2009

    I have the same problem, only the temp doesn't fluctuate. The engine just races at idle, and always when I am slowing to a stop. Could it be anything else?

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Engine coolant temp. sensor is probly cracked it will cause the idle to race, car may smoke, and at time could be hard to start.. It is about 15 dollars, and it is located on the right side of the head if you are looking at the engine.. pull it out you will be able to see if the tip of the ceramic tip is cracked.

Posted on Jan 16, 2009

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