The pump gets power from an engine control relay. The relay also powers the engine computer and the injectors. The relay gets power from a fuse and also from a fuseable link directly from the battery or starter.
SOURCE: Test Electrical to Fuel Pump: 1991 Ford Ranger Ext Cab
The fuel pump safety switch is located in the cab on the toe board to the right of the transmission hump. Also check the fuel relay, it's under the hood with the other relays by the big fuses. Get a Chilton book.
SOURCE: 1991 dodge dynasty 3.3L-no power to fuel pump & replaced 2 things
the auto shutdown relay is usually right next to the fuel pump relay and there will be a starter relay and fan relay also.
SOURCE: no power to fuel pump
Besides the fuses there is also a fuel pul relay. should be located under the hood in one of the relay and fuse boxes.It should be listed on the chart on the inside of the relay/fuse box cover.
SOURCE: Dodge Ram 1500 4x4 5.2L; fuel pump keeps blowing
check to make sure the fuel pump relay is not stuck in the on position.
SOURCE: 86 Dodge ram D - 50 - Fuel Pump
A carburetor type engine has the pump on the engine near the front on the side--trace the fuel line down. Fuel injected engines have the pump located in the fuel tank.
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