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2002 Saturn Vue Reduced Power and Engine Idle Revving

Tiny
BITTERAUSSIE
  • MEMBER
  • 2002 SATURN VUE
2002 Saturn Vue 4 cyl Front Wheel Drive Manual 89, ooo miles

I have replaced my ECM and ICM several times, replaced O2 sensors a couple of times. My car has been displaying reduced power for the last week and I have to pull over and restart the car. Yesterday afternoon when I started my car; it began revving up and down during the idle process. I have unhooked the computer and tried restarting after that. Saturn has made a fortune off me for the same problems over the last 2 years. What could the issue be?
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Friday, August 27th, 2010 AT 8:52 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
They are making a fortune off you because you are just throwing parts at a problem that should have been diagnosed properly in the first place.

You have a "drive by wire" system that uses 2 TPS sensors. When one of them fails and sets a code, it goes into a failsafe mode of half throttle. You need to have it diagnosed properly because the throttle actuator is an expensive part but probably necessary.
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Friday, August 27th, 2010 AT 9:50 AM

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