Oldsmobile/Buick Repair: 89 buick lesbre, electric fuel pump, fuel pump relay

Question
car will start will starter fluid but dies soon after

Answer
Most probable cause is the electric fuel pump in the fuel tank has expired and requires replacement. Very common fault.


autohelp


Fuel pump test:

1. Get yourself a helper.

2. remove the gas cap.

3. have one person listen in the gas tank at the gas cap opening.

4. have the other person turn the ignition switch to the ON position ONLY so as the dash lights come on. Do NOT attempt to start the engine.

5. As soon as the ignition key is turned to the ON position, The person at the gas tank should hear the fuel pump run for TWO SECONDS and then it should STOP.

6. Does it ?.


If you do NOT hear it run, in most cases the fault is the fuel pump.

However, Sometimes if you continously try and start the engine 3 timse for 15 seconds continously and the vehicle starts, the fuel pump relay may be the fault.