Question about 1999 Dodge Ram 2500 4WD

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1999 dodge diesel 2500 seems to have a fuel related problem.

Fuel filter replace, primer pump replaced and injection pump. runs for a while then loses power help!

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  • aakthompson May 31, 2009

    it loses power then shuts down. the main computer was replaced as well, the dealership said it coded. yes the engine light comes on as well. when the injection pump was replaced they indicated good pressure from the lift pump. really appreciate the info.. lots of work on this truck for a lady that keeps replacing things and the problem still exists thank you

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Please clarify the "loosing power" does it lose power and shut down or does it loose power but will idle? Your Cummins is electronically controlled so oil condition is important, fuel leaks, oil leaks, leaks in the air ducting between the turbo and the intake, sensors, water in the fuel. Do you get an engine light when this trouble happens? Dodge uses a lift pump to carry fuel to the the injection pump, is it working?

Posted on May 31, 2009

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I'm not familiar with that particular vehicle, but most diesel systems have a primer under the hood. You will need to pump that slowly until you feel some resistance. That will push fuel to the engine. The other pump may not be able to push fuel through until the system is primed.

If that doesn't get you running I would suspect a clogged fuel filter. Most Dodge vehicles have one on the frame. Just follow the fuel lines until you find it. There may also be one attached to the pump primer.

Changing that filter would my next action. Whether the pump is in the tank or added on outside the tank, you may still need to prime the system after the filter is replaced. Air in the line may cause it to stall, just reprime and start again.

Good luck.

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