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stacked62 12-10-2009, 02:23 PM I have a 94' k3500 6.5L. recently the truck has been acting up and having a loss of power and stalled, we found out the OPS and lift pump was bad and replaced them, we also changed the fuel filter. Now the truck completely dies out. the fuel tank was replaced a year ago and we installed a FSD cooler 2 years ago. The truck will run for a few min. and then die out, the fuel filter is sucked dry. any ideas? jetech1 12-10-2009, 03:39 PM Make sure the lift pump is working,something on the supply side is wrong if the housing is running low on fuel stacked62 12-10-2009, 04:04 PM Make sure the lift pump is working,something on the supply side is wrong if the housing is running low on fuel the lift pump wasnt working, niether was the OPS. we changed both of them and there is still a problem. I think that something could have blown the PMD even though it was changed 3 years ago scetto 12-10-2009, 06:44 PM Disconnect Batteries!!! wait ten mins , went through this yesterday, i couldnt believe it worked , | ||