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Idle bouncing. please help!!!

2K views 2 replies 2 participants last post by  _des_ 
#1 ·
I have a 2006 Suzuki Grand vitera 2.7 AT 36k miles(yes original Milage)
I am having the same issue as original poster. The idle bounces 1800-2000 rpm randomly. Sometimes it will be absolutely perfect, sometimes it would act up.
I could turn the car off and on 10 times and would act up half the time.

The car had a junkyard Throttle body on it(had part number) So someone changed it once before.
Cleaned the Throttle body on it, No fix
Purchased a used throttle, cleaned it. No fix
Installed New Accelerator pedal sensor. No fix.

I have the following codes

p1603 TCM trouble code detected
p2101 Throttle actuator control motor circuit range/performance
p1703 Can Invalid data from other ecu
c1075 steering angle sensor calibration incomplete.

I am starting to think it is the ecu, but am scared to purchase one and it not resolve anything.
 
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