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Turn the key on , the fuel pump is computer controlled . The PCM - engine computer will energize the fuel pump relay for two seconds when you first turn the key on ! This primes the fuel system ! Watch this video on fuel system electrical circuits ! Fuel Pump Electrical Circuits Description and Operation
The fuel pump is located in the fuel tank. The pump is cooled by the fuel. Once the fuel level get down to the 1/4 tank, the fuel module has very little fuel to dissipate heat into. If the pump is aging and getting hot, this will cause it to bind and stop working. I don't believe the sending unit is bad, since your fuel gauge seems to be reading correctly. You have some choices here. You can get a new pump and have it installed in the existing module assembly. The pump runs about $90.00 US. Replacement involved pulling the fuel pump module from the tank, disassembling it and replacing the pump, reassembling it and replacing the module in the tank. You can replace the entire module, which includes the pump, strainer, float, sending unit. This runs about $230.00 US. These prices are for parts only. Labor is extra.
my 2003 grand caravan 3.3l run for 30 then daying and fuel pump making noise you can restart again it run for 2 to 3 min dies again pep boys change crank sensor fuel pump no help when eng shutdown middle of high way or trafic no fuel to eng does have elect power no eng check light any help