code 21 for TPs
#1
#2
Join Date: Oct 2012
Location: Scugog Island ONT.
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It is an APP code.
Accelerator Peddle Potentiometer -fuel peddle.
There are a series of variable resistors like the fuel gauge in the peddle that report to the ECM.
New peddles/sensors are expensive dealer items.
Try cleaning inside the sensor with electrical cleaner and then WD 40,or get 1 from the wreckers.
Accelerator Peddle Potentiometer -fuel peddle.
There are a series of variable resistors like the fuel gauge in the peddle that report to the ECM.
New peddles/sensors are expensive dealer items.
Try cleaning inside the sensor with electrical cleaner and then WD 40,or get 1 from the wreckers.
#3
It is an APP code.
Accelerator Peddle Potentiometer -fuel peddle.
There are a series of variable resistors like the fuel gauge in the peddle that report to the ECM.
New peddles/sensors are expensive dealer items.
Try cleaning inside the sensor with electrical cleaner and then WD 40,or get 1 from the wreckers.
Accelerator Peddle Potentiometer -fuel peddle.
There are a series of variable resistors like the fuel gauge in the peddle that report to the ECM.
New peddles/sensors are expensive dealer items.
Try cleaning inside the sensor with electrical cleaner and then WD 40,or get 1 from the wreckers.
Been like a new truck ever since I made the mistake of getting a Junkyard PPS for $75 had the same symptoms as before junkyard only offered a exchange no refunds and if junkyards are like they are here there are not many 6.5s in them so do what you want but I feel like I would have saved time and money if I would have ponied up to begin with and bought my PPS new to begin with
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chevyman0013 (10-25-2012)
#6
Join Date: Oct 2012
Location: Scugog Island ONT.
Posts: 1,848
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APP=TPS on electronic IP trucks.
Sorry,just getting used to this forum and found the year of truck in your sig.
On a 93 the TPS is not the APP,it is mounted to the side of the IP throttle linkage.
Check connections and resistance in the sensor,it may have a dead spot and need replaced.
The code chart caters more to the electronic IP's,I will need to check an older manual for more relevant info since it has been a long time since one of those trucks passsed through.
Sorry,just getting used to this forum and found the year of truck in your sig.
On a 93 the TPS is not the APP,it is mounted to the side of the IP throttle linkage.
Check connections and resistance in the sensor,it may have a dead spot and need replaced.
The code chart caters more to the electronic IP's,I will need to check an older manual for more relevant info since it has been a long time since one of those trucks passsed through.
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