Fuel Pump Cut-Off Switches

Replacement Parts > Air and Fuel Delivery > Switches

Fuel Pump Cut-Off Switches

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What is a fuel pump cut-off switch?

A fuel pump cut-off switch is a safety device that is designed to shut off the fuel pump when it detects an unusually high amount of fuel pressure in the fuel line. This helps prevent fuel from spilling out of the fuel line and potentially causing a fire.

How can I tell if my fuel pump cut-off switch is faulty?

You can tell if your fuel pump cut-off switch is faulty by checking for any signs of damage or wear and tear on the switch. Additionally, you can check the fuel pressure in the fuel line to see if it is higher than normal. If it is, then the switch may be faulty.

Can a faulty fuel pump cut-off switch cause damage?

Yes, a faulty fuel pump cut-off switch can cause damage. If the switch is not working properly, then it may not be able to shut off the fuel pump when it detects a high amount of fuel pressure in the fuel line. This can lead to fuel spilling out of the fuel line and potentially causing a fire.

How do I replace a fuel pump cut-off switch?

To replace a fuel pump cut-off switch, you will need to:

  1. Disconnect the battery and remove the negative cable.
  2. Locate the fuel pump cut-off switch and unscrew it from the fuel line.
  3. Connect the new fuel pump cut-off switch to the fuel line and tighten it with a wrench.
  4. Reconnect the battery and replace the negative cable.