Question about 1999 Chevrolet Blazer

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Are there sensors in a vortec 6cyl that control fuel pressure?

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  • jwickins May 19, 2009

    I did change my fuel filter, but 1 out of 4 times i still have to put some fuel in the throttle body to start. Once it is started it runs great.I have not had a chance yet to put a computor on it ,but that is my next step, I guess?

  • jwickins May 19, 2009

    thanks, i will try this

  • jwickins May 27, 2009

    hello again,

    I tested fuel pressure and ran and maintained 60lbs.after about 5 minutes not running it droped to it must be the pump, Correct?. What is the line running from the front of the tank(plastic tank), to a juction in the back (fuel pump end) of the tank? The junction goes to the sending unit and to a box furrther on the vehicle.

  • Dar
    Dar May 11, 2010

    Have you changed your fuel filter?



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Then your best bet is to change the fuel pump. It must be too weak. You could have the pressure tested first, if you want to be sure. It has to be either that or a faulty idle control sensor.

Posted on May 19, 2009


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