I have a 96 saturn SL2 1.9DOHC with 200,000 miles. It starts great and runs well when i first start it in the morning but if I turn the engine off. I can't get it restarted. The starter turns the motor over fine. If I hold the accelerator to the floor, sometimes the car will fire but not catch and run. Sometimes it will start begrudgingly in about 30 minutes and it runs really rough when it does for about 20 seconds then smoothes out. This has been happening for about two weeks. I just changed the valve cover gasket because the first plug well was filling with oil. I thought that might have been causing the problem but it is still happening. Any Ideas?

Are you getting any check engine light?




78 Corvette Pace Car For Sale-18k mi orig-Florida

bad coolant temperature sensor/leaking injector/bad fuel pressure regulator........see if fuel is in vacuum line.

no check engine light.

You need to start out with a fuel pressure gauge. Check for proper fuel pressure and closely look at what the pressure does when the engine is shut off. If the pressure immediately starts to bleed down, you may have a leaking injector or bad fuel pressure regulator. Remove the vacuum hose from the regulator and see if there is any fuel residue inside of it. That would indicate a bad regulator.




78 Corvette Pace Car For Sale-18k mi orig-Florida

It turns out that the end of the coolant temp sensor was totally eroded away. I replaced that and it runs like it did the day I bought it. Thanks for your help!

I have seen lots of them bad.Good you got it fixed.

Autojoe; Good call.
Loren
SW Washington

(This post was edited by Loren Champlain Sr on May 14, 2009, 5:37 PM)

I agree but that should have put a check engine light on.




78 Corvette Pace Car For Sale-18k mi orig-Florida

I agree, but have seen many that didn't set a CEL or DTC.
Loren
SW Washington