Warning Signs the Electric Vacuum Pump is Failing
- Your brakes might feel hard to push.
- The ABS (Anti-lock Braking System) light could turn on.
- You might hear a loud buzzing or whining noise from under the hood.
- Your vehicle's engine might run rough or stall.
- You could experience reduced power when accelerating.
How to Test if This Part is the Problem
- Listen for the pump: Turn on the ignition (but don't start the engine). You should hear the electric vacuum pump running for a short time. If you don't hear it, it could be faulty.
- Check for vacuum: Use a vacuum gauge to test the vacuum at the brake booster. If there's little or no vacuum, the pump might be the problem.
- Inspect the wiring: Check the electrical connector and wiring to the pump for damage or corrosion.
- Consult a mechanic: If you're not comfortable performing these tests, take your vehicle to a trusted mechanic for diagnosis.
Common Failure Causes for This Part
- Moisture: Water can get into the pump and cause it to rust or short out.
- Overheating: The pump can overheat if it runs constantly or if the vehicle's cooling system isn't working properly.
- Wear and tear: Like any mechanical part, the electric vacuum pump can wear out over time.
- Electrical issues: Problems with the vehicle's electrical system can damage the pump.