Anti-Dieseling Relays

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What is an anti-dieseling relay?

An anti-dieseling relay is an electronic device used to prevent an engine from “dieseling” (running after the ignition has been turned off). It works by cutting off the fuel supply and/or spark plugs when the ignition is turned off.

What is the purpose of an anti-dieseling relay?

The purpose of an anti-dieseling relay is to ensure that the engine does not continue running after the ignition is turned off. This prevents damage to the engine and ensures that it is not running when it should not be.

How do I know if my anti-dieseling relay is faulty?

If your anti-dieseling relay is faulty, you may notice that the engine continues to run even after the ignition is turned off. You may also notice that the engine runs erratically or sputters when the ignition is turned off.

Can a faulty anti-dieseling relay cause damage?

Yes, a faulty anti-dieseling relay can cause damage to the engine if it continues to run after the ignition is turned off.

How do I replace an anti-dieseling relay?

To replace an anti-dieseling relay, you will need to:

  1. Disconnect the battery
  2. Remove the relay and unplug it from the wiring harness
  3. Plug in the new relay and secure it to the wiring harness
  4. Reconnect the battery


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