mimswk
New Member
- Joined
- Jun 3, 2020
- Messages
- 12
- Reaction score
- 2
- Points
- 3
- Location
- Florida
- Vehicle Year
- 1999
- Make / Model
- Ford Ranger
- Transmission
- Automatic
I have a 99 4x4 with a 5.0 swap from a 96 Explorer. The previous owner seems to have replaced the TPS plug and put in a new sensor. It has a P0122 code.
The engine harness is from a 99 Explorer - not sure if that makes a difference in this case.
I've tested the sensor - it does have low input voltage (.87 volts - throwing the P0122) but seems to increase and decrease back down smoothly when opening and closing the throttle body. Tapping on it while opening/closing the throttle does not seem to cause any erratic behavior. Wide open reading is around 4.5 - 4.6 volts. Reference voltage seems fine.
I'm experiencing pretty weird shifting - longer shifting on acceleration, crappy downshifting causing bogging, etc.
I know the TPS can cause all sorts of shift issues. Would simply having the low input voltage throw everything off?
The sensor doesn't seem to be adjustable - it does feel like there's tension when I install it. I'm hesitant to waller out the holes and adjust it so it gets close to the 1 volt signal needed so it doesn't throw the code.
I'm not completely ruling out that my transmission (not sure of the model - automatic from an 01 Mountaineer) needs some attention. Just trying to take care of the most obvious issue to fix (TPS stuff) before going that route.
I do have it temporarily wired up - I wouldn't think that I'm having a voltage drop due to that. But maybe?
I really don't like just throwing parts at things if I can help it. Not sure if a new TPS would correct the issue.
Any tips or suggestions?
The engine harness is from a 99 Explorer - not sure if that makes a difference in this case.
I've tested the sensor - it does have low input voltage (.87 volts - throwing the P0122) but seems to increase and decrease back down smoothly when opening and closing the throttle body. Tapping on it while opening/closing the throttle does not seem to cause any erratic behavior. Wide open reading is around 4.5 - 4.6 volts. Reference voltage seems fine.
I'm experiencing pretty weird shifting - longer shifting on acceleration, crappy downshifting causing bogging, etc.
I know the TPS can cause all sorts of shift issues. Would simply having the low input voltage throw everything off?
The sensor doesn't seem to be adjustable - it does feel like there's tension when I install it. I'm hesitant to waller out the holes and adjust it so it gets close to the 1 volt signal needed so it doesn't throw the code.
I'm not completely ruling out that my transmission (not sure of the model - automatic from an 01 Mountaineer) needs some attention. Just trying to take care of the most obvious issue to fix (TPS stuff) before going that route.
I do have it temporarily wired up - I wouldn't think that I'm having a voltage drop due to that. But maybe?
I really don't like just throwing parts at things if I can help it. Not sure if a new TPS would correct the issue.
Any tips or suggestions?