Question about 2002 Saturn Sl

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02 Saturn SL1

SES light on; code P0341. Mechanic couldn't find problem. I checked one of the Saturn user groups, took suggestions back to mechanic: clean MAP sensor, clean the ICM backing plate, clean the mounting surface on the tranny, clean the coil posts and check the coil plug wires.

Mechanic replaced plugs and wires, and replaced controller and said they cleaned the MAP sensor. SES light off, car seems to run fine

BUT I noticed the transmission felt a little off, every once in awhile. A couple of times it jerked when I put it in drive, once in awhile felt like wouldn't shift while driving.

I looked at the invoice a minute ago -- they wrote on the invoice that they'd replaced the ignition module. But they told me they'd replaced the controller. Surely these are not the same thing???


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Replacing plugs and wires is the correct soultion for a p0341 on an S-car. However the trans shifting hard is another common problem that the s-cars have which is your valve body on your transmission and the Input shaft nut will eventually need to be replaced as the problem will get worse. as far as the Ignition module. It is actually called an Ignition Control Module. Maybe they were saying controller and referring to that. I hope this helps.

Posted on May 18, 2009


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