Having problems with your 1999 Saturn SL ?

99 saturn sl1 hard to start if sitting for over an hour

\015 I have a 99 saturn sl1. I noticed that lately when the car is sitting for an hour or more, that it is sometimes hard to start. I have to give it gas and rev to 2500 RPM for a couple seconds. After this I let go of the gas it and idles pretty nice. If I have to rev the engine to start it, then usually some black carbon comes out of the exhaust, and it smokes for a few seconds. Once i let it idle for a few seconds, it stops smoking. \015\012\015\012The plugs are good, and I change the oil regularly. I also recently cleaned the throttle body, and EGR valve. I have no codes showing on my ODBII scanner.\015 Posted / edited by AnonymousUser on : 18-01-2021

Answers :

TPS or EGR could be bad.
You have leaking fuel injectors they are fouling out plugs.
Repair Help & Product Troubleshooting for 1999 Saturn SL

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