Question about 1989 Chevrolet Silverado 2500

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MY 1989 chevy silverado pulsates or urges in Idle. It allso does it from zero to 35mph then smooths out. problem is intermitent.

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  • yadayada
    yadayada May 11, 2010

    what trouble codes do u have

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You could have a bad fuel pump, do a preasure test on the fule system, If it is out of range at idle idle it up and see how the range is, sometimes the old pumps loose some preasure onthe low end but run fine on top end. recently had this problem with my 89 3/4 ton 2wd

Posted on May 15, 2009

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My fathers did the same thing. we soon figured out that the injectors were not making an even mist of fuel they were just dumping the fuel in. we replaced the injectors and the problem was fixed.

Posted on Mar 11, 2009

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