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Old 08-24-2011, 03:39 PM   #1
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Default 2000 Bonneville SE 3.8 V6 idling problem

my bonnie has a idling problem. it will go faster automatically, and the engine with race in park. I have been told it is the idle air control or throttle position sensor. I don't want to bring it to a garage because I am a broke college student. How do I find out which part needs to be replaced.
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Old 08-24-2011, 03:46 PM   #2
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Could be a simple vacuum leak, bad PCV valve, problem with the EGR, or dirty throttle body. That'* in addition to a bad IAC or TPS. So start with the vacuum leak.
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Old 08-24-2011, 04:42 PM   #3
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easiest way to check for a vac leak would be to get some carb cleaner, start the engine, spray it around suspect areas and listen for the engine to change pitch.
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Old 08-24-2011, 10:47 PM   #4
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Every time that'* happened on my car, it'* always after improperly installing the throttle position sensor. If you've removed that recently, consider this your easy fix.

EDIT: Moved your thread to the Bonneville section. We guys love our Bonnevilles in there.

Last edited by SignOfZeta; 08-24-2011 at 10:48 PM. Reason: Moved thread
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