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  1. Lift pump issue | Cummins Diesel Forum

    Jul 20, 2025 · Look for any pinched, frayed, or disconnected wires, especially those tied into the lift pump circuit. A common issue is a wire getting tugged loose or chafed during the starter removal.

  2. P7100 pump timing using Power Driven diesel kit

    Feb 8, 2026 · I know there are posts about timing the P-Pump but none of them are answering my issue. I found the timing mark on the P-Pump, pulled the gear and then rotated my engine until it was at …

  3. P20B9 "REDUCTANT HEATER A CONTROL CIRCUIT...

    Jan 18, 2024 · I have had random CEL pop up and get the P20B9 code. I now have the limp mode countdown. I can not find much information at all about this other that it is the def heating. but is it the …

  4. ABS pump and module!!!!!! | Cummins Diesel Forum

    Nov 9, 2024 · When replacing the abs pump or abs module on a 3rd gen cummins (2004 2wd) Does it have to be programmed and does it matter if the new rebuilt abs pump or abs module is from a 4WD …

  5. Testing the injection pump | Cummins Diesel Forum

    Jan 13, 2019 · What’s the best way to test the VE injection pump to verify fuel pressure output to the injectors?? I’m going through the entire fuel system started with the tank & working my way forward …

  6. Vacuum pump problem | Cummins Diesel Forum

    Jul 4, 2009 · The vacuum pump has gone and I have read in the 911 forum on what the repair is going to cost and what the part numbers are. My comment / question is, "Is this very common?" I have …

  7. Lift pump test | Cummins Diesel Forum

    Jan 22, 2019 · How do you test a faulty lift pump? Getting the P0087 code and have tried FRP and new filter. Didn’t know if I could install a gauge to read while driving and parked. Truck shudders going up …

  8. Water pump replacement 2017 6.7 | Cummins Diesel Forum

    Apr 9, 2018 · Water pump replacement 2017 6.7 Jump to Latest 19K views 7 replies 5 participants last post by jbawden Apr 11, 2018 J

  9. CP4 Fuel pump disaster | Cummins Diesel Forum

    Apr 11, 2022 · The CP4 was never meant to pump the amount of fuel it has to move for our trucks. The main problem is when air bubbles/pockets are pushed through it. Aftermarket lift pumps help prevent …

  10. 1998 12V Cummins Lift Pump problems - Dodge Cummins Diesel Forum

    Jul 31, 2009 · Hey Fellas, I have a '98 3/4 ton ext. cab 4wd 12v Cummins with 217,000 on it and have found out by a "cummins specialist" that the lift pump is bad and that the "fuel pre-heater" looks to be …