1994 Buick Park Avenue "ave sputtering driving" Questions

...Ave, 3800 standard (non-ultra). Car sputters/bucks/shakes while driving. If I floor the accelerator and it downshifts, it will accelerate fine with no bucking. But when the car then downshifts, the ...

...ave 3.8 sudden bad hesitation loss of power started small hesitation for few days,then all of sudden,started it this morning and it is hesitating to the point of not being able to drive it.has no ...

Sputtering, Missing, Or maybe not getting fuel. My 1994 Buick Park Ave. Ultra has a few problems #1 Replaced belts on supercharger and now heat and air will not come on. #2 I also had the problem were

...ave drives fine most of the time but on occasions, it suddenly breaks down and won't start again unless I keep trying to about for 30 mins -1 hour and then it spits and fires and then suddenly is ...