Cadillac Repair: 2002 Escalade EXT, fuel pump relay, dash lights

Question
My 2002 Escalade ext started idling rough, and would die sometimes at idle.  Now it might run for 3 or 4 seconds before dieing.  I cleaned out the filter wich was dirty and but it didnt help the problem when i had the filter out i turn the key on and the it pumped fuel out. Though to me it seems that the pump is getting weaker. Now there is no pressure nor fuel at the fuel rail. So could a bad pump be come and go.  Sometimes after sitting it will run for seconds, and then after it dies it wont start at all.

Answer
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 relay or the fuel pump..



let me know.