1994 Chevrolet Truck Repair Question
Mileage: 250,000 miles.
Stalling 6.5l turbodiesel solutions?
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?
Asked by DavewithdieselAnswer
Did you replace the fuel pump driver module? Dorman Part number 904-104.
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.
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
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?
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 ...
I will look that up and get back to you. anything else you can tell me?
Looking over Mitchelle with what you have done its all that makes sense anyway. Let me know
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