HELP!!!! 4.6l missing 02
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Joined: Jul 2010
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HELP!!!! 4.6l missing 02
My 4.6l with 130000 miles on it spit the number8 spark plug out. I jb welded the spark plug in to get home purposes maybe 200miles ran fine like nothing was wrong. So i tore the motor down to helicoil the #8 Cyclinder put the motor back together using new coil pack spark plug. No codes the mech says its a bent valve but it ran good b4 the tear down.....ok so i noticed the muffler was busted so i cut it off and replaced it.... the truck has a steady miss in it soon as started.the truck will drive but once past 2000rpm it bogs down and no power.........i unpluged the o2 sensors no change in the idle or anything could the o2 sensors be bad.... anything will help im stumped!!!
Lead Driver
Joined: Sep 2006
Posts: 7,907
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352 is a coil plug/harness issue for #2 cylinder.
175 is bank 2 to rich.
171 is bank 1 to lean.
131, 141, 161 are dealing with an OX SENSOR wiring issues.
You apprently have your harness messed up and an issue with the #2 coil leads/plug.
Two problems to solve then all the codes should clear.
Looks like you need to be more careful with your work.
Good luck.
175 is bank 2 to rich.
171 is bank 1 to lean.
131, 141, 161 are dealing with an OX SENSOR wiring issues.
You apprently have your harness messed up and an issue with the #2 coil leads/plug.
Two problems to solve then all the codes should clear.
Looks like you need to be more careful with your work.
Good luck.
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