Question about 2002 Ford Mustang

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Under heavy acceleration the car stumbles, runs rough

And has poor acceleration. Like when you are doing 70 and want to pass another car. It used to easily do it and real smooth but now I have to down shift and it runs rough. Starts and idles just fine.
'02 Mustang 3.8 V6

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I am having the same problem with my mustang, have replaced tps, egr valve and sensor, clean maf, new plugs and wires, new fuel filter, cleaned throtle body and still having same problems....Please help!!!!!

Posted on May 27, 2010

  • marcus Dec 14, 2011

    What about the Coil and Fuel injectors.......or bad piston rings.

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Fuel filter, spark plugs, spark plug wires, the vehicle probably needs a full tune-up.

Posted on May 29, 2009

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