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  1. 07.5 - 09 3rd Gen 6.7L Powertrain
    I have a 2007 6.7 with 240k miles, having super wired problem with pcm. Truck will start fine in the morning and runs great until hits operating temp then loses communication with pcm dies and will not restart. Have to let sit for 12 plus hours for restart then same problem. Verified good ground...
  2. 3rd Gen. Performance Parts Discussion
    I recently purchased the Edge cts3 for my truck (2006 2500 5.9 with a 48RE jasper trans) per my previous post my trans was working fine other than rpm were a bit odd 2500rpm/60 mph some say its normal other say it’s not. That is besides the fact truck still drove with no problems. Immediately...
  3. 89-93 Powertrain
    So recently an issue with the wait to start and water in fuel lights flickering when key is turned to accessory. During this the ASD relay is chattering as well as the check engine light. The output of the relay to the PCM and alt shows 1.5v and slowly increases to a full 12.5v. At that time the...
  4. 3rd Gen. Non-Powertrain
    I have an open wire somewhere between the number 7 pin of the data link connector and pin 16 of a connector on the ECM. I have gotten this far and currently stumped, cant see a broken wire and not sure exactly where the harness runs. Also not sure what the breaks are on the wiring diagram. Any...
  5. tach-amp


    This is the tachometer drive circuit and amplifier I built to replace the PCM drive circuit. This circuit provides output similar to the backlash in an ignition coil that gives a strong zero crossing signal the tach uses as timing pulses. Have fun!