Question about 2001 Dodge Ram 2500 Truck

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1994 dodge turbo diesel will crank but not turn over. I've checked relays in fuse box under the hood and fuses inside the cab. I've also checked the two relays mounted on the well just under the driver side battery. I turn it to on, push up on the fuel shutdown solenoid which holds in - still nothing. I'm a novice and looking to resolve any simple issues before trying to take it to some expensive place to be checked/worked on.

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  • swhatley May 01, 2010

    The other day, a friend cracked two injectors (one at a time) while I cranked the engine - nothing. I know where the fuel injection pump is. Is there any test or check that can be done to determine for sure if this is the cause or not? How hard is it for a novice to change? Is the fuel pump at the tank?

    Where is the fuel filter? Is that the same as the fuel/water separator?

  • swhatley May 05, 2010

    I checked the fuel relay in the fuse box under the hood once already. I even jumpered it and got 12 volts at the pump in the tank, but when it's connected the pump doesn't make any noise or vibration or anything. Are there any other relays other than the one in the box?

    I found two on my tire well just below the driver side battery and two mounted on the edge just above the fuel/water separator. I'm not sure what the four are used for, but I know the two below the battery are working.

    While we were at the pump we found one wire with 7.5 volts that never changed and another wire we don't know what it's for.

  • swhatley May 07, 2010

    Thanks for the assistance.

    I'm looking up parts on O'reily's & autozone, but they do not show a fuel pump for the tank or list a pump / gauge sending unit as the manual calls it. What is the part, part description that I'm looking for? When I click on fuel pump it only shows the mechanical pump that is under the hood.

    I'm still not completely convenced that this is my problem, but I'm far from being an expert. I wonder if it is the PCM because neither my fuel relay or my auto shut off relay is picking up when I try to start. I jumpered both, have voltage at sending unit in tank, still no turn over. And, the PCM has a loud high pitched noise coming from it.



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Ok first youll have to check to see if your getting fuel to the engine to do this you can do 1 of 2 things disconnect the fuel feed line to filters and crank the engine to see if you are getting fuel from the tank if not then you will more than likely need to change the injection pump or fuel pump you can also take the fuel filter off and see if fuel is in it . you may have to bleed your fuel line especially if you ran out of fuel. i dont suggest you do this too often but you can get a can of quick start and zap it into your intake and see if the engine fires and keeps running just dont spray to much about a 2-3 second shot is all thats needed if it does not keep running after the ether shot then you may have bad fuel pressure which again leads to your pump . hope this gives you a better place to start. let me know how it turns out .

Posted on Apr 30, 2010

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  • Katdaddy21 May 04, 2010

    its not all that hard to change ifyou have the right tools test your fuel relay to see if its bad or not if its not bad then check your pump to see if its getting voltage if its not located on the side of the engine then it will be in the tank. you can drop the tank and pull the pump off that way or you can undo your bed and slide it back enough to get the pump out. but if you are not getting any fuel then that means that the pump isnt pumping and if it is pumping you dont have enough psi then you wont start either psi should be around 16 or better. check to make sure that the fuel lines are not frayed or dry rot in that they could collapse in on itself and block the fuel.

  • Katdaddy21 May 05, 2010

    ok since you do not have any juice at the pump then the pump is more than likely bad change it out and hopefully this will solve your problem.

  • Katdaddy21 May 09, 2010

    the pcm could be bad all that may be needed is to change out the prom or you can change the entire unit the only way that i know to check the pcm is with a diagnostic sad to say you may have to go to a dealer for that or to a trusted repair center fyi the pcm usually is a little costly $300-1000 hope its not that let me know how you make out i may have overlooked something.



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