Question about 1994 Oldsmobile 88

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My injectors stop spraying while driving.

While I am driving my 93 caprice it will stop after checking for the problem I realized that the injectors will stop spraying. If I let it sit for a few hours she will start right back up. I have replaced the fuel pump, filters and strainer. Can someone tell me what my problem is?

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  • jruff3374 Apr 23, 2009

    You ve been helpful this car is just frustrating me. Will this sensor work at times like mine is doing and just shut off?

  • jruff3374 Apr 24, 2009

    I checked this car doesnt have a crank sensor

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  • Master
  • 6,784 Answers

If the crank sensor is failing it will shut down all fuel and ignition systems via, ecm/pcm modules. its located in the same proximity of the crank shaft pulley and you will see the sensor housing and its wire clips around the outside of the crank shaft pulley.

I can t communicate with you via the regular window because you rated my threads already with a thanks for trying before i could type the crank sensor solution.

Posted on Apr 23, 2009

  • 1 more comment 
  • Michael Masters
    Michael Masters Apr 23, 2009

    the sensor is failing and not completely dead at this point. that is why the car will go for some time then, it will shutdown. once the sensor completely stops working, the car will not start at all.

    This is a run down on this device.

    th ecm sends out 5 volts to many sensors and devices like the evap and fuel pump etc..

    if the ecm/pcm notices that the crank sensor is failing or about to die, it will shut of the fuel pump and spark as well. this will kill the engine completely.

    You have replaced the ecm and, the injectors are pulsing so, it leads me to believe that this is a failing crank sensor that is causing this interruption.


  • Michael Masters
    Michael Masters Apr 23, 2009

    i understand your frustration.

  • Michael Masters
    Michael Masters Apr 24, 2009

    Its called the Knock sensor in thsi particular vehicle and its located Under hood, passenger side, lower engine area, front





    of starter, mounted in engine block








    .

    This is a 5.7 liter TBI OHV 8 Cly, correct?


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