Question about 2001 Chevrolet Impala

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No power under acceleration , it starts good idles good then when you drive it ,it bogs down like its starving for gas. i replaced fuel pump , fuel filter,fuel regulater,map sensor

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Two possible issues. One, Your mass airflow sensor could be unplugged, dirty, or malfunctioning. Two, you could have a clogged catalytic converter. There are cleaners you can use, but generally you need to replace the catalytic converters.

Posted on Apr 13, 2014

Testimonial: "thanks for helping , i did unhook the egr tube just to see if the exhaust had back pressure but no change"

  • steve wilbur
    steve wilbur Apr 13, 2014

    i also noticed the engine kind of cuts out like it coughs when you accelerate,hard to describe,cough -run cough -run -cough but runs fine at an idle

  • Cody
    Cody Apr 15, 2014

    If it's a 3800, you may need to change your cam and crank sensor. Have your PCM scanned to check for codes.

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Posted on Jan 02, 2017

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