How to Replace Relay Circuit 87 for Your Engine

How to Replace Relay Circuit 87 for Your Engine

Relay circuit 87 is a crucial component that powers up the engine control unit (ECU) and other systems of your car. If this relay fails, you may experience problems with starting, running, or shutting off your engine. In this blog post, we will show you how to diagnose and replace relay circuit 87 for your engine.

What is Relay Circuit 87?

Relay circuit 87 is a 12-volt switch that connects power from the battery to the ECU and other components of your engine. It is usually located in the fuse box under the hood or near the battery. Relay circuit 87 is activated by the ECU when it receives a signal from the ignition switch or the keyless entry system.

Why Do You Need to Replace Relay Circuit 87?

Relay circuit 87 can fail due to various reasons, such as corrosion, wiring damage, power surge, or faulty ECU. Some of the symptoms of a bad relay circuit 87 are:

- The engine does not start or cranks but does not fire up.

- The engine starts but stalls immediately or after a few seconds.

- The engine runs but does not shut off when you turn off the ignition.

- The check engine light comes on and you get a trouble code P068500, which indicates an electrical fault or open circuit in relay circuit 87.

How to Replace Relay Circuit 87?

Replacing relay circuit 87 is not a difficult task, but you need to be careful and follow some safety precautions. Here are the steps to replace relay circuit 87 for your engine:

1. Disconnect the negative battery terminal to avoid any electrical shock or short circuit.

2. Locate the relay circuit 87 in your fuse box. You can use your owner's manual or online resources to find its exact location and identification number.

3. Remove the old relay by pulling it out gently from its socket. You may need to use a pair of pliers or a screwdriver to pry it out if it is stuck.

4. Compare the old relay with the new one and make sure they have the same specifications and pin configuration.

5. Insert the new relay into the socket and push it firmly until it clicks into place.

6. Reconnect the negative battery terminal and start your engine to test if the relay works properly.

If you have successfully replaced relay circuit 87 for your engine, you should notice improved performance and no more trouble codes or warning lights. However, if you still have problems with your engine, you may need to check other components or consult a professional mechanic for further diagnosis and repair.