OVERHEATING PUMP - Ford Powerstroke Diesel Forum
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Old 08-04-2007, 12:16 PM
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OVERHEATING PUMP

OK I received my new fuel pump yesterday and installed it today. I installed it and let the truck run in the driveway for 30 minutes. Man I **** near burnt my hand off when I touched the pump. I wired the pump direct to the battery with a toggle switch in between. I grabbed the switch and got a nice burn on my hand from the wire. It has gotten hot enough to melt the electrical tape. Why is this new pump getting soo **** hot, just like the old one I just replaced? Seems like I'm having another problem and the fuel pumps are just getting the blunt end of my main problem. Any suggestions?
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Old 08-04-2007, 12:26 PM
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Pumps only overheat from "load" either the orifice opening is to small for the pump to work at rated capacity, so the pump works harder to pull the volume rated for, (line to small) or the pump line is blocked either all the way or part of the way. The pump could be what is called "dead heading" this occurs when the pump is not properly primed before putting into service. Just a thought. by the way do you not have a circuit breaker on the pump, or fuse? It should be rated for 1.5 times the running amps to cover surges. If not , you looking ast a possible fire in your future. Be careful
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