3.0 flex fuel on the fritz - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 06-24-2011
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3.0 flex fuel on the fritz

Hey guys I'm a new member here on the forums and I'm done throwing money at this thing. I have to codes that I can't seem to get rid of they are p1132 and p1152 both of which are pointing me in the way of 02 sensors (bank 1 sensor 1) my question for you guys is, is the passenger side bank one because cylinder one is on that side or am I missing something here? Any help would be great thanks. I would backprobe the sensors but they are so cramped up in there I would rather not get burned to death today. Taking them out to bench test is another option but I'm afraid of breaking one off in the manifold they have about 115,000 miles on them so I'm sure they are due to be swapped out.
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Old 06-24-2011
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Change them both.
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Old 06-24-2011
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Ok I have replaced all three 02 sensors and I'm still having problems. When the trucks cold it runs fine but it seems like when it heats up it starts missing and has no power with black smoke coming out of the tail pipe. When I does this I can smell un burnt fuel so I know that it dumping a ton of fuel into the motor but why is it still doing it after all three 02 sensors have been replaced?
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Old 06-27-2011
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try cleaning your MAF mass airflow sensor (mass airflow sensor) this also controls how much fuel the computer dumps fuel into the engine

It could also be your coolant temperature sensor not the temperature gauge sensor
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Old 06-27-2011
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sounds like engine needs a rebuild.
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Old 07-08-2011
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The engine is in no way in need of a rebuild.. Runs fine for about an hour and then starts missing and smoking. Replaced all three 02 sensors, egr, pcv, cleaned every vaccum hose on the truck, replaced map sensor and cat. Still have a drivability issue. Amongst all my good judgement I finally took it to the repair shop they have had it for three weeks and have yet to fine the problem.

Last edited by OneFlySTi; 07-08-2011 at 09:37 PM.
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Old 07-08-2011
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Burning oil? Needs a rebuild.

Mine used to misfire and smoke too, had it rebuilt.
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Old 07-09-2011
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No it's not buring any oil or leaking and fluids. I performed a compression check before taking it to the shop all cylinders were within specs. Could it be a valve problem?
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