1987 Chevy Truck No Power To Fuel Pump Relay

Introduction

If you own a 1987 Chevy truck and you're experiencing issues with your fuel pump relay, you're not alone. Many Chevy truck owners have reported similar problems. In this article, we'll discuss the possible causes and solutions to the problem of no power to the fuel pump relay.

What is the Fuel Pump Relay?

The fuel pump relay is an electrical component that controls the fuel pump's operation. It's located in the engine compartment's fuse box and receives power from the battery. When the ignition is turned on, the fuel pump relay sends power to the fuel pump, which then pumps fuel from the tank to the engine.

Possible Causes of No Power to the Fuel Pump Relay

There are several possible causes of no power to the fuel pump relay in a 1987 Chevy truck. These include:

1. A faulty fuel pump relay

2. A blown fuse

3. A bad fuel pump

4. A broken wire or connection

5. A faulty ignition switch

Diagnosing the Problem

Before you can fix the problem of no power to the fuel pump relay, you need to diagnose the problem. Here are the steps to follow:

1. Check the fuse - Start by checking the fuse for the fuel pump relay. If the fuse is blown, replace it and see if the problem is fixed.

2. Check the fuel pump relay - If the fuse is okay, check the fuel pump relay. You can do this by swapping it with a similar relay in the fuse box. If the fuel pump now has power, the relay was faulty and needs to be replaced.

3. Check the fuel pump - If the fuel pump relay is okay, check the fuel pump itself. You can do this by checking the fuel pressure at the fuel rail. If the pressure is low or non-existent, the fuel pump is faulty and needs to be replaced.

4. Check the wiring - If the fuel pump and relay are okay, check the wiring for any breaks or loose connections. Repair or replace any damaged wires or connections.

5. Check the ignition switch - If all else fails, check the ignition switch. A faulty ignition switch can prevent power from reaching the fuel pump relay.

Replacing the Fuel Pump Relay

If you've determined that the fuel pump relay is faulty and needs to be replaced, here are the steps to follow:

1. Locate the fuel pump relay in the fuse box in the engine compartment.

2. Pull the old relay out of the socket.

3. Insert the new relay into the socket.

4. Turn the ignition on and check to see if the fuel pump now has power.

Conclusion

No power to the fuel pump relay in a 1987 Chevy truck can be a frustrating problem to deal with, but it's not an uncommon one. By following the steps outlined in this article, you should be able to diagnose and fix the problem with relative ease. Remember, safety always comes first when working on your vehicle. If you're unsure about anything or feel uncomfortable performing a repair, take your truck to a qualified mechanic.

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