Question about 1996 Cadillac DeVille

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1996 cad deville real low on gas, wont fire

The #8 plug wire is split, i just bought it and it is taped, the car wont start , it cranks with a jump, but only reads 11-12volts battery. even with the jump. uh help. thx

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  • kowalboneski Apr 20, 2009

    i added two, i will add three more, what is your take on the battery amps nec. to crank it fast enough,?

    also would there be a fuel pump reset in the floorboard pass. side?



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I would add 5 gal of gas first. The gas line pickup in the tank might not be delivering gas

Posted on Apr 20, 2009

  • motherslawn Apr 20, 2009

    Cadillac does NOT incorporate a reset switch on their fuel systems.

    You either have:

    1. A damaged fuel pump.

    2. A damaged fuel line.

    3. Damaged fuel electrical wires.

    4. damaged fuel pump relay.

    Try this test.

    1. Remove the gas cap.

    2. Listen at the gas cap opening.

    3. Have a helper turn the ignition switch to the ON position whereas all the dash lights illuminate, But do NOT have them try and START the engine.

    4. As soon as your helper turns the ignition switch to the ON position, You should hear a buzzing noise at the fuel cap opening for only 2 seconds and then it will stop buzzing.

    As far as the battery;

    The several hundred amperes of current the starter motor draws should pull the battery voltage down to a normal 9 to 10 volts. Do this test: Disable the ignition or injection to prevent the engine from starting. Then put a voltmeter across the battery posts while cranking it with the key or an external remote starter button. Crank for 15 seconds (no longer); the battery voltage should remain 9.6 volts or above. with no draw the battery should read @ 13.5V. I would take the battery in to a auto parts store in your area for a free test.


  • motherslawn Apr 20, 2009

    as far as the #8 wire, There is NO reliable way to splice a spark plug wire, I would replace it asap. 1 bad wire will not prevent the car from starting however.



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