Mechanics

STALLING 6.5L TURBODIESEL SOLUTIONS?

1994 Chevrolet Truck • 250,000 miles

1994 Chevy 6.5 turbo diesel (vin F) Stalls has new injection pump after installing new pmd (#6 resistor) relocated to the front bumper, on the last stall I felt the pmd and it was not even warm I open the air bleed and water drain and there is pressure to the injection pump I am thinking about replacing the pre programed ecm but I am not sure if that is the problem NO codes are shown no other symptoms.
It will sometimes restart right away sometimes it takes a min or two no more than 5. Do I have to worry about the P.R.O.M going bad would either the ecm or prom make a code?
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Davewithdiesel
July 16, 2012.




Did you replace the fuel pump driver module? Dorman Part number 904-104.
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Racefan966
Jul 16, 2012.
Yes and it was relocated

Tiny
Davewithdiesel
Jul 16, 2012.
If the prom was bad then you would not be able to read codes, it have a comunication error. What tests have you done what else have you replaced? I don't like replacing an ECM unless all things point to it.

Racefan966
Jul 18, 2012.
I replaced the PMD/FMD, the Injection pump, fuel filter, tested the oil pressure sender the lift pump runs well ( I forgot to close the air bleed and water valve and drove it to the parts store with no stalls and a major mess ) I also noticed the temp gauge does not read anything but cold I replaced the coolant temp sensor with no change even if I ground it with a jumper and put it in boiling water but the gauge does go to hot if I put the sender wire straight to ground, the gauge sometimes will spin all around past max hot while turn the key to crank or when I shut the truck off

Tiny
Davewithdiesel
Jul 19, 2012.
The guage problem sounds like a the instrument cluster is bad. It sounds like the computer is the problem with all that you have replaced there is nothing else to cause the problems that I can find. Is there any codes?

Racefan966
Jul 21, 2012.
No codes which makes it that much more of a challenge I put a multimeter on the pmd wire at the b and f which lead to the fuel solniod and watched the sign wave I am not sure what to look for.

Tiny
Davewithdiesel
Jul 22, 2012.
I will look that up and get back to you. Anything else you can tell me?

Racefan966
Jul 25, 2012.
Thats all I can think of

Tiny
Davewithdiesel
Jul 25, 2012.
Looking over Mitchelle with what you have done its all that makes sense anyway. Let me know

Racefan966
Jul 28, 2012.
Maybe its your oil pressure switch!
You can wire your fuel pump on the rail straight with power and try it if it doesnt stall then you can change your oil pressure switch!
Before doing all that you can check if you dont have a fuel leak and you can change your fuel filter too

Tiny
Lebow
Dec 8, 2012.

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