Are you having trouble with your Chevy Blazer’s fuel pump? The fuel pump is responsible for transferring fuel from the tank to the engine. A faulty fuel pump can cause your engine to stall, or even prevent it from starting altogether. In this article, we will provide you with a Chevy Blazer fuel pump wiring diagram, along with some commonly asked questions to help you troubleshoot your fuel pump issues.
What is a Fuel Pump Wiring Diagram?
A fuel pump wiring diagram shows the layout of the electrical connections for the fuel pump. It provides the location of each wire, along with its color and what it is connected to. This information is necessary for troubleshooting any issues that may arise with your fuel pump.
Here’s a Chevy Blazer fuel pump wiring diagram for your reference:
| Wire Color | Connection |
|---|---|
| Orange | Fuel Pump Prime Connector |
| Pink | Fuel Pump Power wire |
| Black/White | Fuel Pump Ground wire |
| Gray | Fuel Level Sensor Signal wire |
| Black | Fuel Level Sensor Ground wire |
| Dark Blue/White | Fuel Level Sensor Signal wire |
How to Test Your Chevy Blazer Fuel Pump?
If you suspect that your Chevy Blazer’s fuel pump is not working properly, you can perform a few tests to diagnose the issue. Here’s how:
Check the Fuel Pump Fuse and Relay
The first step to diagnosing any fuel pump issue is to check the fuel pump fuse and relay. The fuse and relay are both located in the engine compartment fuse block. The fuel pump fuse should have 12 volts on both sides when the ignition is on. The fuel pump relay can be tested by swapping it with another relay of the same type and seeing if the fuel pump starts working.
Check Fuel Pressure
You can also check the fuel pressure with a fuel pressure gauge. The fuel pressure should be 55-62 PSI with the engine running. If it is lower than this, it may indicate a fuel pump issue.
Listen for the Fuel Pump
You can also listen for the fuel pump by turning the ignition to the “on” position (without starting the engine). You should hear the fuel pump run for a few seconds. If you don’t hear anything, it may indicate a fuel pump issue.
Commonly Asked Questions
What is the Function of the Fuel Pump?
The fuel pump is responsible for transferring fuel from the gas tank to the engine. It maintains a constant flow of fuel to the engine, which is necessary for the engine to run properly.
What are the Symptoms of a Bad Fuel Pump?
The symptoms of a bad fuel pump include stalling, difficulty starting, loss of power, and poor fuel economy. If you experience any of these symptoms, it may be time to diagnose your fuel pump.
How Often Should I Replace My Fuel Pump?
The lifespan of a fuel pump can vary depending on the make and model of your vehicle. However, most fuel pumps should last at least 100,000 miles. It is recommended to replace your fuel pump every 100,000 miles or as recommended by your vehicle’s manufacturer.
Can I Replace My Fuel Pump Myself?
Replacing a fuel pump can be a difficult and time-consuming task. It is recommended to have a professional mechanic perform the replacement to ensure that it is done correctly.
How Much Does it Cost to Replace a Fuel Pump?
The cost of replacing a fuel pump can vary depending on the make and model of your vehicle. On average, it can cost between $500 and $1,000 to replace a fuel pump.
We hope that this Chevy Blazer fuel pump wiring diagram and these commonly asked questions have helped you troubleshoot your fuel pump issues. If you have any further questions or concerns, it is recommended to consult with a professional mechanic.
