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Hmmwv fuel system issue
Before you start replumbing things you might want to tap into the #54 wire on the top of the IP and monitor the voltage (+24v) there to see if it's steady and not dropping out. That voltage shutting off is how the system shuts down the engine and a bad solenoid or bad wiring will do the same thing. -
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Hmmwv fuel system issue
If the cap on the fuel tank isn't venting or the breather isn't functioning it will create a vacuum in the tank that the pumps can't overcome so the engine starves. By removing the cap your testing whether or not that's happening. You didn't include much information about the truck other than... -
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Hmmwv fuel system issue
The IP will draw fuel from a full tank but then fail when the tank level gets low if the mechanical pump on the block is failing/bad. Check the fuel pressure with a mechanical gauge on the top of the water seperator housing where the STE/ICE transducer normally lives. You should see around 6...