2004 5.9 Cummins trying to accelerate against break pedal.

[Heyjustinwilson]

Hi guys,

I have a 2004 dodge ram 2500 5.9 that Seems to have no issues while in neutral, but when in Drive or Reverse, the truck accelerates to around 2-5mph. When I apply the brake pedal, the truck continues to try to accelerate at a low level against the brake pedal and sounds like it is straining.

Any thoughts?

 

[Oliver Closehauf]

Can you elaborate? What you described sounds like a typical description of any automatic.

Are you saying the engine revs increase when you shift out of neutral? Is the behavior the same with the AC on or off?

If you can post more detail I think that would help.

 

[Fast69Mopar]

Hi guys,

I have a 2004 dodge ram 2500 5.9 that Seems to have no issues while in neutral, but when in Drive or Reverse, the truck accelerates to around 2-5mph. When I apply the brake pedal, the truck continues to try to accelerate at a low level against the brake pedal and sounds like it is straining.

Any thoughts?

I know exactly what is happening with your truck. I have seen this issue with many trucks like yours equipped with the 48RE. The Torque Converter Clutch is staying engaged. In the RH/RE transmissions the torque converter clutch is normally applied. When you start the engine and the fluid gets moving through the transmission the first thing that happens is the fluid pressure disengages the converter clutch. Your only option is to replace the torque converter because the converter has failed.

The TCC/OD solenoid is a normally open solenoid which allows fluid to pass through at all times to keep the converter clutch disengaged. When power is applied to the TCC/OD solenoid the fluid flow is cut off to engage the clutch. If the TCC/OD solenoid was stuck in the ON/Applied position you would have corresponding DTC set in the PCM. If that was the case and the solenoid was stuck then that would explain the issue. Fluid pressure is applied through the input shaft into the converter clutch to disengage the clutch.

The problem with the torque converter is that the stator or the clutch is damaged.