Having problems with your 1999 Saturn SL ?
I have a 99 saturn sl2 is running rough i've replaced plugs,wires &COILS STILL HAS A ROUGH IDLE ONCE YOU GET GOING IT RUNS GREAT
Try replaceing the ECT sensor. Mine was doing same thing, this SOLVED my problem!!
Repair Help & Product Troubleshooting for 1999 Saturn SL
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