Accelerator malfunction

[LHGeorge]

2003 RAM 2500 SLT 4X4 Accelerator fails to work. This accelerator is not a direct hookup to the fuel delivery system. It is electronic. When it malfunctions there is absolutely no engine response to pressing the accelerator pedal. Sometimes turning the ignition off and back on fixes it immediately, other times it does not. The malfunction continues for a few minutes. I made repeated complaints to the dealer. I had to have a lawyer contact my local dealer before I got any response to my complaint. It has now been back to dealer many times. Dealer can’t find anything wrong. Factory representative checked truck out and said it was okay. The factory representative said he did not do anything but the truck’s accelerator seems to malfunction less often since he looked at the truck. Factory representative said not to touch floorboard prior to starting the truck. District manager has instructed me to take it to another dealer.

 

[Summit]

Originally posted by LHGeorge " Factory representative said not to touch floorboard prior to starting the truck. "



are you?? you should NEVER touch the throttle before starting the truck, if your key is in the "on" position and you touch pedal it recalibrates the T. P. S.

there is NO need to give it throttle. maybe a kwick recalibrate will fix it?

 

[thames1948]

How can you tell if needs to be recalibrated? Is that something that dealer has to do or can owner do it? Thanks.

 

[catoiler]

Their is a TSB for what you are talking about. TSB 18-027-03Date: July 4, 2003



THE MDS2 MUST BE OPERATING WITH CIS CD2137 OR HIGHER, AVAILABLE JULY 21, 2003.



Models: 2003 (DR) Ram Truck



NOTE. THIS BULLETIN APPLIES TO ALL RAM TRUCKS EQUIPPED WITH THE 5. 9L CUMMINS 24-VALVE DIESEL ENGINE (SALES CODE ETC OR ETH) BUILT ON OR BEFORE JULY 25, 2003 (MDH 0725XX).



Overview:

This bulletin involves selectively erasing and reprogramming the Cummins CM845 Engine Control Module (ECM) with new software.



Symptom/Condition:

The vehicle may exhibit:



No throttle response if the engine is started with the Accelerator Pedal Position Sensor (APPS) in an off-idle position (pedal depressed) and the transmission is shifted into drive or reverse while the APPS remains in an off-idle position (pedal depressed), causing the engine to remain at idle,

Lack of power while towing or hauling a heavy load with the transmission in overdrive - vehicles equipped with 47RE transmission.

Technician may find the following DTC:



P2638 - Torque Management Feedback Performance - vehicles equipped with 48RE Transmissions.



This engine software includes a change to Sentry Key Immobilizer (SKIM) functionality and the APPS auto zero algorithm.



Diagnosis:

Using a Scan Tool (DRBIII) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTCs are present other than those listed above, record them on the repair order and repair as necessary before proceeding further with this bulletin.



If the vehicle exhibits any of the Symptom/Conditions, perform the Repair Procedure.