Here's a breakdown of how to check if your fuel pump is working:
1. Listen for the Pump:
* Turn the ignition key to the "ON" position (without starting the engine). You should hear a whirring sound from the fuel tank area for a few seconds. This is the fuel pump priming the system. If you don't hear anything, the pump might be faulty, or the relay might be bad.
2. Check Fuel Pressure (Most Reliable Method):
This requires a fuel pressure gauge specifically designed for automotive fuel systems. You'll need to find the fuel pressure test port, typically located on the fuel rail.
* Locate the fuel pressure test port. Consult your repair manual for the exact location.
* Connect the fuel pressure gauge to the test port.
* Turn the ignition key to the "ON" position (without starting the engine). The gauge should show the specified pressure for your engine (consult your repair manual for the correct specification).
* If the pressure is low or absent, this strongly indicates a fuel pump problem.
* If the pressure is correct, the problem likely lies elsewhere in the fuel delivery system (fuel filter, injectors, etc.)
3. Check the Fuel Pump Relay (Less Reliable, but a quick check):
* Locate the fuel pump relay. Your owner's manual or a repair manual will show you where it's located in the fuse box (under the hood or inside the car).
* Swap the fuel pump relay with a known good relay of the same amperage from another circuit (if possible). If the pump starts working, the original relay was the issue.
4. Visually Inspect (Least Reliable Method):
* This method is the least reliable but can sometimes reveal obvious problems. This involves significant work, and is only recommended if other tests are inconclusive.
* Access the fuel pump. This usually involves dropping the fuel tank. This is a very involved process and requires specialized tools. Consult a repair manual for instructions. Do not attempt this unless you are experienced with car repairs.
* Inspect the pump for any physical damage, corrosion, or debris. However, even with visual inspection, a faulty pump might not show obvious signs of damage.
Important Considerations:
* Repair Manual: A repair manual specific to your 1995 Dodge Avenger is highly recommended. It will provide detailed diagrams, specifications, and procedures for accessing and testing the fuel pump and related components.
* Safety: Work in a well-ventilated area. Gasoline fumes are dangerous. Use appropriate safety equipment, including eye protection and gloves.
* Professional Help: If you're not comfortable performing these checks, it's best to take your vehicle to a qualified mechanic. Incorrectly handling fuel system components can be dangerous.
The fuel pressure test (step 2) is the most definitive way to determine if your fuel pump is functioning correctly. The other steps offer preliminary checks that might point toward the pump or other parts of the fuel system. Remember safety precautions and consult a repair manual throughout the process.
