The practice of wiring the fuel pump through an external relay has two objectives. This truck had a new fuel pump installed and still did not have fuel pressure.
Fuel Pump Relay Wiring
The relay allows full power to the component without needing a switch that can carry the amps.
Fuel pump relay wiring diagram. I did not suspect the relay i just always use it as a central troubleshooting spot. The relay has 4 blades on it that plug into four sockets. By socket i mean the electrical connector that the relay plugs into.
Module totally integrated power description the totally integrated power module 2tipm is a. 1993 43l 50l and 57l gmcchevrolet pickups with the 4l60 e automatic transmission. There isnt a fuel pump relay it is controlled by the totally integrated power module.
Fuel pump relay wiring diagram automatic transmission only note. I just had it parked all summer and i could not hear the fuel pump come on along with not starting. Each socket matches the pin.
To protect the computer from over current damage. While there could be a few causes for poor gas mileage a failing fuel pump relay is one of them. Some circuit traces inside may burn open if a pump or other component has problems.
The wiring diagram illustrations in this article cover only. Installing a dedicated voltage supply line for your fuel pump. Buying a car is a tremendous investment so when your gas mileage becomes an issue you want to take it seriously.
How to re wire a fuel pump off a relay. The vehicle being tested is a 1999 chevy suburban with no fuel pressure. When putting in an aftermarket fuel pump or looking to get more fuel out of your factory pump one mod worth doing is re wiring that fuel pump.
Fuel pump relayresistor bypass in the mitsubishi 3000gtdodge stealth by jeff lucius introduction it is critically important for turbocharged models that the fuel pump receive the maximum amount of voltage available from the charging and wiring system. A relay is typically used to control a component that draws high amperage.
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