1. Listen for the Pump (Easiest First Step):
* Turn the ignition key to the "ON" position (don't crank the engine). You should hear a brief whirring sound from the fuel pump area. This sound usually lasts for a couple of seconds. If you don't hear it, the pump might be bad or there could be an electrical problem. This is a good first indicator, but not definitive proof of failure.
2. Check Fuel Pressure (More Involved, Requires Gauge):
This is the most definitive test. You'll need a fuel pressure gauge that's compatible with your car's fuel system. You'll typically find a Schrader valve (looks like a tire valve) on the fuel rail.
* Consult your vehicle's repair manual: It will tell you the exact location of the Schrader valve and the *specified fuel pressure* for your 1993 Trans Am. This is crucial, as different fuel pressures indicate different problems.
* Connect the fuel pressure gauge to the Schrader valve.
* Turn the ignition key to the "ON" position. The gauge should read the specified pressure. If the pressure is low or zero, the fuel pump is likely the culprit.
* With the engine running, the pressure should remain stable and within the specified range. A drop in pressure while the engine is running may indicate a pump that's weak or failing.
* Important Safety Note: Fuel is highly flammable. Work in a well-ventilated area and avoid any sources of ignition (cigarettes, sparks, etc.).
3. Check the Fuel Pump Relay (Electrical Check):
A faulty relay can prevent power from reaching the fuel pump, mimicking a pump failure.
* Consult your vehicle's repair manual: Locate the fuel pump relay. It's usually in a fuse box under the hood or inside the car.
* Visually inspect the relay: Look for any signs of damage (burnt contacts, corrosion).
* Swap the fuel pump relay with a known good relay of the same amperage rating (again, check your manual). If the pump starts working, you've found the problem.
4. Check the Fuel Pump Wiring (Most Involved):
If the relay and pressure tests fail, you may have a wiring problem. This requires more advanced troubleshooting skills and tools like a multimeter.
* Check the wiring harness: Look for broken wires, corrosion, or loose connections.
* Use a multimeter to check for power at the fuel pump connector. You should have power when the ignition is turned on.
5. Visual Inspection of the Fuel Pump (Requires Removal):
If all other checks are inconclusive, the fuel pump itself might need to be removed and inspected. This is a more significant job that involves dropping the fuel tank.
* Consult your repair manual for procedures to safely access and remove the fuel pump. This is not a simple job and requires specific safety precautions because of the fuel system.
In summary: Start with the simplest tests (listening for the pump). If that's inconclusive, a fuel pressure gauge will provide the most accurate assessment. If the pressure is low or nonexistent, then the fuel pump is likely the issue. However, always rule out electrical components (relay and wiring) before condemning the pump. Remember safety precautions throughout the entire process. If you are not comfortable performing these tests, it's best to take your Trans Am to a qualified mechanic.
