- Joined
- Jan 30, 2010
- Messages
- 52
- Reaction score
- 12
- Points
- 8
- Location
- Utah
- Vehicle Year
- 1992
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Engine Size
- 4.0
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- My credo
- Stop skipping steps and get it done right the first time.
So I am working on a friends truck. its a 2004 ranger 4WD 4.0l SOHC (VIN E). I am an ASE certified Master Tech, and for the life of me I cant find any info that is helpful. so i thought id come and ask the other experts.
The friend is ussually pretty competent, but not this time around. he recently swapped in an engine from a 2002 4WD auto trans and kept his manual trans. When he brought the truck to me he had cut and rewired ALL of the HO2S connections, on the plug side and the truck side. he had done the same to the wiring for the MAF and various other sensors. so the list of codes was astronomical, to say the least. so I spent a day undoing all the custom electrical work he had done using diagrams in service info from ALLDATA. Got it down to just 1 code, p0135. Im sure the remaining code is due to the sensor that he rewired being from the wrong vehicle. Im going to replace it today.
The truck is still running very poorly... So i scanned it with the enhanced ford scanner thing and it came up with 2 other codes. P2270 and P2272. I have delved into those just yet as they are o2 sensor codes and assume they will sort themselves out when i replace the oddball o2 sensors later today.
so thats the history of what i am dealing with. which is probably a bit long winded for the question i have.
the question:
How many HO2S should this truck have? it currently has 3. one in the back of each of the manifolds, and one post cat after the Y pipe.
the reason I have to ask this question is because, the wire harness has 4 connectors for HO2S (two gray, two blue) but the exhaust only has 3 holes. He drilled a hole and tried to add a sensor but it made the problem worse, and thats when all the custom electrical work started.
so whats the deal? 4 plugs, 3 holes.....
scan tool data also shows a 4th HO2S in the live data (obviously reading 0.00v
thanks in advance.
The friend is ussually pretty competent, but not this time around. he recently swapped in an engine from a 2002 4WD auto trans and kept his manual trans. When he brought the truck to me he had cut and rewired ALL of the HO2S connections, on the plug side and the truck side. he had done the same to the wiring for the MAF and various other sensors. so the list of codes was astronomical, to say the least. so I spent a day undoing all the custom electrical work he had done using diagrams in service info from ALLDATA. Got it down to just 1 code, p0135. Im sure the remaining code is due to the sensor that he rewired being from the wrong vehicle. Im going to replace it today.
The truck is still running very poorly... So i scanned it with the enhanced ford scanner thing and it came up with 2 other codes. P2270 and P2272. I have delved into those just yet as they are o2 sensor codes and assume they will sort themselves out when i replace the oddball o2 sensors later today.
so thats the history of what i am dealing with. which is probably a bit long winded for the question i have.
the question:
How many HO2S should this truck have? it currently has 3. one in the back of each of the manifolds, and one post cat after the Y pipe.
the reason I have to ask this question is because, the wire harness has 4 connectors for HO2S (two gray, two blue) but the exhaust only has 3 holes. He drilled a hole and tried to add a sensor but it made the problem worse, and thats when all the custom electrical work started.
so whats the deal? 4 plugs, 3 holes.....
scan tool data also shows a 4th HO2S in the live data (obviously reading 0.00v
thanks in advance.