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Tractor Talk Discussion Forum

DODGE DIESEL NO POWER

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MARK R

10-16-2007 22:29:50




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MY FRIENDS 01 DODGE 5.9 CUMMINS HAS NO POWER AND GETS POOR FUEL MILEAGE(14 MPG).HE HAS FREED UP THE WASTE GATE,REPLACED BOOST SENSOR,AND LIFT PUMP;AND,ALSO REMOVED EXHAUST MUFFLER.FUEL FILTER,TURBO BOOST HOSES ARE FINE.TRUCK HAS 60,000 MI.DOES ANYONE HAVE ANY IDEAS? OR,CAN ANYONE GIVE AN OVERVIEW OF THE FUEL SYSTEM OPERATION ON THIS MODEL.IT NOW HAS NO FAULT CODES. THANKS FOR ANY HELP.
MARK




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Joe(TX)

10-17-2007 05:28:58




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 Re: DODGE DIESEL NO POWER in reply to MARK R, 10-16-2007 22:29:50  
When you say freed up the wast gate, it sets off an alarm to me. The waste gate has to be closed to get boost. Freeing it up would imply allowing it to open faster, ie less boost = less power.
Check valve adjustment.
Possible injector or injector pump problem.



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JD9295

10-17-2007 04:47:25




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 Re: DODGE DIESEL NO POWER in reply to MARK R, 10-16-2007 22:29:50  
The fuel preheater has a screen in it also that can plug.
Right next to the fuel pump to the left and down a little of the mechanical.
Bottom comes off and theres the screen. Dont know if this will hel but its another restriction point.
Also it just may be time for a injector pump rebuild, i know thats rare on these but it does happen



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suptscottyb

10-17-2007 05:34:34




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 Re: DODGE DIESEL NO POWER in reply to JD9295, 10-17-2007 04:47:25  
About 01 dodge injector pump -we had one and it ate up an injector pump every 30,000 miles. Like clock work - the dealer said they changed design after that. I got rid of it after pump #3.



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kyhayman

10-16-2007 23:25:29




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 Re: DODGE DIESEL NO POWER in reply to MARK R, 10-16-2007 22:29:50  
Hmmm, my first guess would be fuel filter, second lift pump. What color smoke? if any? Is it a surge loss, or a constant loss? Fuel chip? If all that checks out ok what about a fuel pressure reading coming off the filter to the injection pump? Some of these have a filter in the tank, real bear to replace.

If I remember correctly its supposed to be 10psi minimum off the lift pump to the backside of the injection pump. Last time mine got weird on me it was reading ok on fuel pressure but slightly spiking when it cut out. Narrowed it down to the pump, or not. They wanted to sell me a new pump, seems that some of the bio blends and some of the LSD blends muck up the guts of the pump. In my case it was a computer problem. The overdrive driver and the RPM driver were cancelling eachother out. Ended up taking it to Chrysler and getting the overdrive driver shut off. Cost me alomost 1 MPG and 200 bucks but the other option was 3 grand for a computer.

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Texas Sand

10-16-2007 23:00:47




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 Re: DODGE DIESEL NO POWER in reply to MARK R, 10-16-2007 22:29:50  
Does it ever smoke? Any add ons like fuel boxes? I have a 2001 also and had a little trouble with a map sensor I believe. It's been 5 years so I kinda forget, but whatever sensor it was the first replacement was also bad! The best place to read is the Turbo Diesel Register Link



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