1993 STS fuel pump won't turn on.
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 1993 STS fuel pump won't turn on. in Past Cadillac Vehicle Discussion; I turn the key to the on position and usually you can hear the fuel pump turn on but today ...
  1. #1
    JCrease is offline Cadillac Owners Member
    Automobile(s): 1993 cadillac seville sts, 1994 cadillac eldorado
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    1993 STS fuel pump won't turn on.

    I turn the key to the on position and usually you can hear the fuel pump turn on but today it didn't. It worked fine yesterday. The fuses are good. The relay is clicking. It cranks but no fuel is being pushed to the engine. Could it be the Fuel Pump?

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: 1993 STS fuel pump won't turn on.

    Sounds like it IS the fuel pump. You could put a pressure gauge on the fuel rail service port to be sure.

  4. #3
    2kflhr's Avatar
    2kflhr is offline Cadillac Owners Fanatic
    Automobile(s): 2010 Escalade, '97 Eldorado ETC, '97 SS Camaro
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    Re: 1993 STS fuel pump won't turn on.

    I would suggest checking for voltage at the fuel pump itself to verify the circuit is supplying power to the pump.

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