2000 GT 2.4 bucking when trying to maintain speed

bepetro

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Has anyone had a problem with the car bucking slightly when trying to maintain a set speed? No matter 30, 40, 50 if I try to stay at the speed I feel a bucking, tack goes up a little than back down when this happens. Does not do it all the time. Had car checked out and of course no problem was found because no engine light comes on.
Replaced: plugs, air filter, throttle module, cat convertor,fuel filter, distrubuter module, fuel lines, has injectors checked and fuel pump checked.
Tried sea foam and fuel injector cleaners, somethimes this works, sometimes not.
It idles fine, no loss of power, if you jump on it it does not hesitate, to stop it from bucking I either let off the gas or give it more pedal.

Bill
 
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You didnt mention if it is an automatic transmission, if so it could be the lockup torque convertor cycling in error.
 
Sorry it is an automatic. And if so what can be done about that?
 
have it checked by a transmission shop such as AAMCO
 
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