Question about 2000 Chevrolet Blazer

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Blazer runs rough when running at 45 to 55 mph

Car out of cruise control flutters or runs rough from 45 mph to 55 mph and once over 55 mph runs smooth. I notice from 45 to 55 the rpm guage moves with flutter or rough running engine. when i put in cruise control it smooths out. Fule flow and filter have been changed.

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  • Anonymous Mar 18, 2014

    Act like it is going to die RPM drop about 700 RPM then rebounds

  • Anonymous Mar 18, 2014

    cruise control active - 60 mph - RPM falls and engine looses power

  • Anonymous Mar 31, 2014

    Ideals smooth, but back fires on increased RPM's

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The problem was low transmission fluid. added half a quart and the problem went away.

Posted on Sep 30, 2008

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