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Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff
  1. ANON KNOWLEDGE

    Need help, 94 12v Cummins no overdrive

    I re-adjusted the Engine Speed Sensor (ESS). The tachometer still had some bounce and even zero reading. I went back to the Powertrain Control Module (PCM). I extracted each of the wire harness connector pins (you only need a tiny flat screwdriver to extract) and checked for any signs of...
  2. ANON KNOWLEDGE

    Need help, 94 12v Cummins no overdrive

    Turns out my tachometer issue is not solved. The other day I started the truck in cold weather (~30 degrees) and the the tach bounced and went on and off before complete zero. I moved the wires connecting the harness to the PCM, this caused it to jump and even stay at ~750 RPM. I have done this...
  3. ANON KNOWLEDGE

    Need help, 94 12v Cummins no overdrive

    I have a 95 Dodge 3500 5.9L 12v Cummins w/47RH transmission. From approximately 2012 to 2/22/2020 I have had issues with no tachometer, no overdrive, cruise control, A/C. What is different about this situation is that the truck runs 100% in the summer time, but as soon as the cold temperature...
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