A fuel pump resistor runs the fuel pump at a lower speed when the demand for fuel is lower. When more fuel is needed the system bypasses the resistor and allows the fuel pump to run at full speed.
The fuel pump resistor on a 1991 Lexus LS400 is used to regulate the voltage supplied to the fuel pump. It helps control the pump's speed and reduces noise during operation by allowing it to run at a lower voltage during idle or low demand conditions. This component is essential for maintaining optimal fuel delivery and ensuring the longevity of the fuel pump. If the resistor fails, it can lead to fuel pump issues, such as erratic operation or failure to start.
I am unaware of a relay only a "Fuel Pump Resistor". This is used to reduce voltage.
in the main fuseblock
fuel pump resistor is in tank with fuel senderAnsweractually it is behind the washer fluid reservoir on the passenger side. it is white and U-shaped. you may need to take out the inner fender or the bumper off
On a 2000 Pontiac Grand Prix GTP, the fuel pump resistor is typically located in the trunk, near the fuel tank. It is mounted on the rear passenger side, attached to the fuel pump wiring harness. To access it, you may need to remove the trunk liner or panel covering the area. Always consult a repair manual for specific instructions and safety precautions.
Drivers side front wing. There are two relays one for the pump and another to bring the resistor online at low speed to reduce fuel flow at low speedzs
The VATS resistor on your key may be bad, or inside your steering column.
Right side frame behind washer bottle assy. Can be accessed by loosening inner fender.
vech.antitheft is on.watch light on dash if on,take to dealer may be the fuel pump resistor.
Fixed it - Turned out to be a bad MAF sensor.
If there is fuel in the tank and it is making it's way to the fuel pump, and the fuel pump will not pump fuel, the pump is obviously defective. Replace the fuel pump with a new one.
The fuel pump switch is what tells the fuel pump what pressure to pump fuel into the fuel rail