Question about 1993 Oldsmobile Cutlass Supreme

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Electrical problem I cant find the power source to the fuel pump fuse. There is no power at the fuse or relay. Thanks

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I have a problem with my 1993 Oldsmobile Cutlass Supreme, my car starts and will run good for awhile and then it will quit and won't start up again, the engin will turn over real good with lots of power in the battery, but I just can't get to start, I have put a new fuel pump, filters, spark pluggs & wires, alternater, battery. and it still does the same thing can you help me.
daniel

Posted on Oct 22, 2008

  • RodneyLee Jun 27, 2011

    same thing happend to me spent alot of money changing things that didn't need changing. it was the crank shaft sensor. wants this was changed no more problems.

  • Ricky Peters
    Ricky Peters Jul 14, 2011

    The ignition switch will also cause this when they get hot.

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1 Answer

Lost electrical power to fuel pump


There are many reasons why fuel pumps have no power, most (in tank) fuel pumps fail due to low fuel inside of tank.

These fuel pumps turn at an alarming rate which in turn causes an alarming amount of heat. This heat is then dissipated by the fuel inside of the tank itself.If the driver/operator allows to run the fuel very low and continue to do so, this will over time allow for the fuel pump to overheat due to the ONLY source used to cool the fuel pump is the fuel inside of the fuel tank itself. Electrically, view the operator's manual or similar source to locate fuel pump fuse and/or relay of which will open the electrical path when the fuel pump overheats.
This should be a pretty good starting point to locate/isolate electrical issue you may be experiencing.

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if there is no power coming out from the relay, that will be the problem. as you said it is new,check it manually by connecting the terminal into the power source and check the continuity of the the output from the source.
Sometimes there is new parts that has a manufacturer defect. try another relay.

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OPERATION
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