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Old 03-26-2024, 08:14 AM   #3
Tiger Joe
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Join Date: Mar 2015
Location: South of Pittsburgh
Posts: 425
Re: 454 tbi idle surge

so just to close the loop here for anyone searching in the future.

my two issues were completely unrelated.

O2 sensor light was due to a damaged wire.

surge at idle was due leak at the IAC. when i rebuilt the throttle body it looks like the new o ring in the kit was a little too big compared to old. must have torn slightly putting it together.
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