My 2002 sc2 saturn idles high over 2000 check engine light comes on then out of blue light goes off car runs fine, i've had all vaccaum line done ,idle control replaced, what could it be now?
Ok just had my Saturn fixed after replacing vaccum lines, idle control, so this time it was the PCM (power control modular) this is the computer that tells your car when & how. They don't make these parts anymore, but you can get a used on 100 bucks if need to have a dealer reprogram it to your car 60 bucks & wa la car runs normal again. It's that little metal box behind the battery.
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