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97 Chevy trouble

Discussion in 'Trucks and Trailers' started by Grapevine, Aug 17, 2001.

  1. Grapevine

    Grapevine LawnSite Member
    Posts: 126

    I've got a 97 Ck2500 4wd 5.7 Vortec w/64000 miles. When I get out on the highway it bucks and hesitates and it's very annoying. Usually anytime over 65 MPH. I've had a complete tuneup wires included and have had it back to my mechanic 2 times without any results. He says fuel pressure is fine and will likely look at the Catalytic converter next. Hooting around town there's no problem and it cooks, it's just the highway driving... Any ideas ?

    XOFMOT LawnSite Member
    Posts: 161

    Had the same problem with my '96 2500 5.7L(350). First did the whole tuneup thing---no results. Did the CATALITIC CONVERTOR thing....no results.....the problem turned out to be a faulty RPM limiter..the dealer changed it, no more bogging down!
    Good luck
  3. Grapevine

    Grapevine LawnSite Member
    Posts: 126

    Thanks xofmot, I'm calling my mechanic on Monday

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