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ok FIGHTING my o2 sensor signal....unfreaking believable

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91tizzy

15+ Year Contributor
459
2
Jan 19, 2008
Cincinnati, Ohio
Will not stay normal....100% creeping to 167% staying there then every once in a while straight back to 100%....cannot figure it out to save my life.

New oxygen sensor
No exhaust leaks whatsoever
No boost leaks whatsoever.
Thought it may possibly be a loose wire at my coolant temp sensor not letting it come out of warmup...fixed that and still same issues.

Now this ecu thats in the car did have a leaky cap that had to be fixed recently.

Could this maybe be another problem in the ecu?

runs fine at anything not part throttle.

Help me brainstorm guys please....
 
reset the ecu and the problem seems to be alleviated if not resolved.:hmm:
 
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