running lean (good discription)
#1
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Location: SL,UT
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Year: 1996
Model: Cherokee
Engine: 4.0l
running lean (good discription)
hi all my jeep is running horrible. so bad i cant drive it. it is throwing 3 codes first is
po138
02 sensor circuit high volts (bank 1 sensor circuit)
then
po141 o2 sensor heat circuit malfunction (bank1 sensor 2)
AND
PO171
SYSTEM TO lean (bank1)
i am stumpped i have a very bad exhaust leak right before my catalytic converter.and the jeep has a hard time starting. if i step on the gas i can only get to about 2500 rps and then the motor will die also i have a very bad over heating problem
po138
02 sensor circuit high volts (bank 1 sensor circuit)
then
po141 o2 sensor heat circuit malfunction (bank1 sensor 2)
AND
PO171
SYSTEM TO lean (bank1)
i am stumpped i have a very bad exhaust leak right before my catalytic converter.and the jeep has a hard time starting. if i step on the gas i can only get to about 2500 rps and then the motor will die also i have a very bad over heating problem
#2
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Location: Wisconsin
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Model: Cherokee
'96 had a problem with bad cats and it sounds like yours might be blocked. There's a lifetime recall on them- have the dealer run your VIN. If it rattles internally when you smack it- it's bad. The fault with them is the catalyst breaks up into chunks (that's the rattle) then blocks the exhaust outlet. (that's the inability to rev up and the overheating)
You'll want to fix that exhaust leak, it's in a bad spot o2 sensor-wise, and look over the O2 sensor wiring (heater circuit trouble). If nothing found there the sensor itself might be shot.
You'll want to fix that exhaust leak, it's in a bad spot o2 sensor-wise, and look over the O2 sensor wiring (heater circuit trouble). If nothing found there the sensor itself might be shot.
Last edited by Radi; 07-23-2013 at 12:16 AM.
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