So Im using an A9L and a foxbody harness. I got that Ron Francis o2 harness, pinned it the way the instructions said for the year the harness is from. When they are plugged in the truck hesitates and pops and backfires. I can't figure out whats up.
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O2 sensor issues
- Thread starter Ramcharger90
- Start date
Junglejoe
Well-Known Member
you have the timing right? You put the spout plug back in on the dizzy?
Yup it doesn't do it with them unplugged.
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