Lost power APPS problem?? - TDR Roundtable

Lost power APPS problem??

11-19-2006, 02:35 AM

#1 (permalink)

RNixon

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Join Date: Jan 2005 Posts: 59

Lost power APPS problem??

My loss of power problem is baaaaaaaaacccccccccckkkkkkkk

Started happening again last night (3 times, and again this morning) Check engine light comes on at the moment the power drops off. Code set is P0121. Same as before. "Accelerator Pedal Position Sensor Signal Volts Do Not Agree w/Idle Validation Signal" My OBD-2 software calls it "Throttle / Pedal Position A Circuit Range /Performance"

Tried to find a replacement APPS today, but no luck. Does anyone know a good source? I did find one reference to Hoesli Diesel. Part number is 53031575 (stamped on the part) I know from last time Dealer wants $455 for one.

Is there anything else I should check before replacing APPS? Just installed new lift pump last time this happened (less than 1 month ago) New fuel filter installed today. Old one looks normal. No other symptoms or problems noted so far. Truck runs great except for these incidents. '99 model with 130k miles.

Any suggestions??

__________________
Rob KD5bxz
'99 Dodge Ram 2500 CTD; 30' Carri-Lite 5th wheel RV

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