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Old 01-31-2012, 02:30 PM   #1
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frankmassa is on a distinguished road
Join Date: Jan 2012
Location: Georgia
Posts: 3

2002 L-Series 2.2L Sedan
Default 2002 Saturn L100 running rough and trouble starting

Hello All,
I have a 2002 Saturn L100 2.2l (~170,000 miles) that has been giving me fits the last few days. Last week the check engine light came on so I took it to AutoZone to have the code read. The guy told me it was the front O2 sensor so I bought one to replace it but like an idiot I didn't ask for the code. I took the car home replaced the sensor that night and then backed it down the driveway. The next morning when I came out the car would not start. It turns over but never actually starts (even with spraying a little engine starter into TB). If I put the pedal all the way to the floor the engine would chug/weeze like it was trying to start but never would. I did some research on this site and thought that maybe the CPS was bad so I replaced it as well as the spark plugs (they were originals in need of replacing). After putting everything back together I got the same symptoms as before. This time after trying to start it for approximately 10 times or so the car finally started. Although it ran very rough at first, eventually as the car warmed the idle got better so I took it out to see how it would run under load. The car seemed a little sluggish/hesitant and there was definitely a little loss in power but the car would definitely go (while stopped the car would almost stall upon giving it gas but it never actually stalled). After running for 10 minutes or so I cut the car off and then tried to restart it and it fired right up as if nothing was wrong. This morning when I came out to start the car I experienced the same issues as before. I had to put the pedal to the floor to get it to crank and it chugged and weezed and finally started, but once it warmed up the engine ran ok other than being a bit hesitant. I've checked the gas pressure at the fuel rail and when I press the valve in it sprays gas about 6-10 inches (haven't actually checked the pressure but I can if I can find a valve) so I don't think it is a fuel pump issue (I can also hear it running for 2 seconds when I turn the key).

I'm not really sure where to turn from here but I'd like not to just throw money at what I think may be wrong with the car. I've had suggestions that maybe the CC is clogged (I'm not really sure how to test that) as well as IAC sensor, and possibly a new ICM or ignition pack. My question is, is there a way I can test these different items before just purchasing new ones?

Just as a heads up I unplugged the battery cable when I took off the starter to replace the CPS which reset the engine light codes and the check engine light has not come back on meaning the guy at Autozone can't run the code.

Any suggestions on what to check next would be greatly appreciated.


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