Mechanics

SATURN SL1 SPARK PROBLEM

2002 Saturn SL1 • 4 cylinder FWD Automatic • 138,549 miles

I have a 2002 saturn sl1 that stopped running while driving. I have replaced the fuel filter, pcm, checked fuel pressure and cannot figure out the problem. It will run on ether. Please help!
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Williewonka
August 13, 2011.




What is the fuel pressure?

Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

Wrenchtech
Aug 13, 2011.
Just to add to this one the first thing I would check for is spark the 1998-2002 saturn S model saturns are none for bad crank shaft position sensors. To check for spark is easy remove two spark plug wires that are side by side on the coil towers have someone crank it over while watching for a nice snaping blu spark. They are also known for bad coolant temp sensors that crack read way lower then actual temp and make the engine flood out. From the sensor cracking they also leak coolant into the connector corroding it out. Also checking fuel pressure and the noid light to check injector pulse is good also like wrenchtech suggested.I personally like to start by checking spark because no special tools are need its a quick test and I have seen alot of crank shaft sensors fail and cause the car to die while driving and a lot of other symptoms. Also if your security light is on or flashing while trying to start the car then that issue has to be resolved first because that will cause a crank no start.
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Saturntech9
Aug 13, 2011.
I ruled out spark because he said it ran on starting fluid.

Wrenchtech
Aug 13, 2011.
Missed that part so were down to fuel pressure injector pluse or coolant temp sensor most likely causes.

Saturntech9
Aug 13, 2011.

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