Cadillac Repair: Car wont start, fuel pump relay, cadillac sedan deville

Question

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Followup To

Question -
I own a 1993 Cadillac Sedan Deville. It ran ok, without warning it came to stop, the engine died, and not the car wont start, you leave it sit for about an hour, and it acts like it wants to start, but, then it will only crank and not turn over. What could it be? Thank you

Answer -
The first things you have to determine is it getting spark to the spark plugs while you are trying to start it and is it getting gas to the engine and the correct fuel pressure ?.

these we need to know FIRST.


tom

Yes, It is getting spark, as far as the fuel pressure, I dont have slightess idea. It doesnt smell like it is flooded.

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 ?.

7. If it does NOT run for the 2 seconds the fault is either the fuel pump or the fuel pump relay.