howdy, group :)
i have an issue with my automobile. i purchased a 1992 buick lesabre v6 from my brother's brother-in-law about three months ago for a steal. very nice car and so far, it's done its job.
i recently had some tune-up work performed on it: new plugs, wires, and fuel filter. i had some drivability issues (some misfiring and overall not running as smooth as it should have been) so it was a good time anyway. the car ran very smoothly. however, i have begun to notice something "annoying".
what seems to happen from time to time is a bucking/misfiring problem. the car will be running well for a time, then suddenly it will start to "buck" as though is fuel-starved or misfiring. at this point, firmly hitting the gas brings it out of this state. it seems to happen erratically (sometimes it doesn't do it at all, other times it does it more than others). i can best describe it in detail like this:
i will be cruising along, at which point it will feel as though it is kicking into high gear. at this point the car runs a bit rougher, and the bucking begins. so, i drove the car in "regular" drive instead of overdrive (in this car, overdrive should be the normal "setting") to see what would happen. it seemed to run better, leading me to believe that the problem may be with the overdrive. i did also observe that occasionally while driving up a steep hill, the problem would occur.
it's hard to explain exactly when it occurs since it is sporadic. i dropped some "heet" in the gas tank in case water was in the tank, and have tried higher grade gas for the heck of it.
i have no other noticeable problems as the car has very good power, gets good gas mileage, and starts immediately but i know something is "missing".
any help would be greatly appreciated.
thank you in advance! scott :)
p.s. as a side note, is it safe to drive the car in "regular" drive as opposed to overdrive both on side streets and the freeway? just curious as i have a fairly long trip coming up very soon :)