Does the Volvo fuel pump relay control the fuel gauge?

Answer by  78Camaro (200)

The fuel pump relay is an electrical device that switches on the fuel pump when the ignition is turned to on. The fuel gauge is located inside the tank and is unrelated.

Answer by  Amber40 (24961)

The fuel relay should have nothing to do with the fuel gauge. It simply acts as a secondary switch to make the fuel pump run. The fuel gauge should be the fuel sending unit found in the tank.

Answer by  kennethjgoodson (4903)

No it does not. If you are having a problem with the gauge it is most likely the tank. You have a sensor in the tank and it reads how full the tank is. You will probably need to replace that and then see if your gauge is working. Hope this helps.

Answer by  setrip (158)

The fuel pump relay is a high current switch operated by a low-current circuit in the PCM. So the answer is no. The PCM measures the fuel level.

Answer by  Jaggers (1018)

You sly fox! You have discovered the whole Swedish design philosophy. This kind of technology made Volvo competitive. Of course now you have exposed it and Volvo is toast.

Answer by  mannersandsuch (1796)

Yes it does, I would be careful before you begin to make repairs on this if you have a newer modal car. Most of the gauge's on newer cars require a dealer or mechanic to hook it up to a computer to fix issue that might have arisen.

Answer by  Adam17 (161)

No. There should be a separate relay controlling the fuel gauge. The fuel pump relay should only control the fuel pump.

Answer by  Doug77 (1433)

A relay cannot control a rheostat gauge. The fuel pump relay only turns power on and off to the fuel pump itself. The gauge is on a separate system.

Answer by  Aravinth (8)

The pressure from the pump and fuel should meet the manufacturers requirements. There are certain Volvo models require 55 to 61 psi of pressure measured with engine off.

Answer by  Amber40 (24961)

Relays are used to control higher current components with a lower current. The relay just controls the power to the pump. The tank sending unit is what controls the gauge.