I have a 94.5 f350 that we swapped a 7.3 into. we have it running now but it wont accelerate and will only idle. the motor is a 94.5 the wiring is from a 95, underdash harness 95, pcm 95. We used a test light and there is no power to the throttle position sensor. the ivs was also jumped but no luck
I also have three large plugs that i cant figure out where they go. these are tied in to the underdash harness near the throttle pedal. i have looked at a 96 and a 97 and neither have these plugs. what are these for? thanks
when you press the throttle pedal, do you get a CEL? this happened to me, i had to unplug the plugs at the pedal and spray with electrical spray, havent had the problem again.
I have no power to the tps plug but there is power to the ivs sensor. When i was using a test light on the tps, when i touched the plug it woulg trip the glow plug relay. I also have a check engine light
After going out and looking under my dash, it looks exactly like the remote keyless entry plugs, its a small black box screwed in rite behind the cubby hole, your gonna need that box, then you can add key fobs ftw
I was thinking that was one of the possibilities but I didnt know anyone who had one with it. Do you think that could be the reason why I dont have power to the tps?
I still can not figure out why i have no throttle. I have tried a new computer, swapped a complete pedal assembly, tested and traced the brown wires that tie into all sensors including the tps and barometric pressure sensor which do not have power. I also tried hard wiring these from the wire right outside of the cab with no luck. Let me know if you have any ideas. I also talked to the diesel mechanic at ford and he is confused as well and I dont want to take it in there..
it could be a anti theft code that is going off idk if the truck has that but i had a budy with a 01 7.3 and it happend to him it would start and run but if you throw it in gear or hit the thortle it would shut down
A P0122 code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. On some vehicles that lower limit is 0.17 - 0.20 volts (V).
Did you adjust it when you installed it? If the signal value is less than .17V then the PCM sets this code. Could be an open or a short to ground in the signal circuit. Or you may have lost the 5Volt reference voltage.
Symptoms
Symptoms may include:
Rough or low idle
Stalling
Surging
No/little acceleration
other symptoms may also be present
Causes
A code P0122 may mean that one or more of the following has happened:
TPS not mounted securely
TPS circuit short to ground or another wire
Faulty TPS
Damaged computer (PCM)
Possible Solutions
now your Circuit
In this system the Malfunction Indicator Lamp gradually becomes steady when the ignition is switched ON
The Malfunction Indicator Lamp (MIL) is OFF after one flashing time if the engine is cranking.
The Malfunction Indicator Lamp (MIL) is switched ON if there is any failure detected.
Pre-requisites for setting the DTC
· The Malfunction Indicator Lamp (MIL) wiring harness is in low voltage.
What happens when DTC sets?
When will DTC clear?
1) The Malfunction Indicator Lamp (MIL) will glow.
1) The MIL will turn off automatically after four consecutive ignition cycles in which the diagnostic will perform flawlessly.
2) The ECM will record operating conditions when the diagnostic fails which will be stored in the Freeze Frame and failure records will buffer.
2) A history DTC will clear after 40 consecutive warm up cycles without a fault.
3) A history DTC is stored.
3) DTC(s) can be cleared with the aid of a Scan Tool.
Diagnostic Tools
The following are likely to cause an intermittent problem 1) poor connection 2) rubbed through wire insulation 3) wire that is broken inside the insulation.
Any circuitry suspected to initiate the disorder should be thoroughly examined for the following conditions.
· Backed-out terminals
· Improper mating
· Broken locks
· Improperly formed
· Damaged terminals
· Poor terminals to wire connection
· Physical damage to the wiring harness
I pulled the dash out last night and checked all the wiring. I am wondering if I will need to get a different underdash harness. I have 94.5 under hood wiring and 97 under the dash? does anyone know if this would cause the problem? everything works except the throttle and the windshield wiper motor
Finally got this thing running and the throttle working. Swapped out the fusebox and underhood wiring and it solved the problem. getting plates for it today and hoping to have it finished this weekend. thanks for any advice
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