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Oxygen Sensor Issue F250 6.8L v10


89Twincharge

Active Member
Joined
Aug 25, 2016
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Vehicle Year
89
Make / Model
Ford
Transmission
Manual
Oh yeah and check the fuses for the fuel injectors and the grounds associated with them
 


Bionicjoe

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Feb 1, 2022
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Location
Nicholasville, KY
Vehicle Year
2003
Make / Model
F250 SuperDuty
Transmission
Automatic
B1s2 doesn't control fuel it is merely there to check condition of catalytic converter and will not cause misfires. Bending a fragile plastic tube on the other hand does create cracks especially in the flex areas. Since your cats were stolen b1s2 probraby had a cel since then... Your misfire didn't start then did it? Don't just chase the check engine light. It's merely an aid in finding some problems that are actually detectable by the ecu.
Cat was gone when I bought the truck. It ran perfectly fine since changing the plugs 6 months ago.
However you may be correct that the sensor hasn't been working since before I had the truck.
To be honest I'm not sure how I could've broken a wire now that I know how the harness runs. A crack in the plastic seems likely. There is a support in the back of the engine, up underneath the cowl/firewall that has broken. Could be the issue.
 

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