1999 Saturn SL2 RPM fluctuats between normal and sometimes goes to over 2000 while running ? what causes this ?
2 Answers
Sounds like a TPS a throttle position sensor that could make your idle go up wildly up and down I would recommend probably replacing that other than that I would say a tune up and make sure everything else is good but when I had issues like that when I was at Park the RPMS jumped wildly so it's probably your TPS sensor?
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I'm also having this problem besides it trying to stall and run really rich please help. It was showing code for knock sensor so I replaced it and still does it