1993 Concorde "bucking"

Without knowing more, it sounds like a fuel delivery or engine in need of a
tune up. If recently tuned, when were the ignition wires last replaced?
Has the fuel filter been changed recently? Do the simple routine
maintenance first. That timing belt also needs replacement at about every
100K miles. It certainly could have slipped, but does not sound like that
is the problem to me.

Good luck.

Bob

"rushzep" > wrote in message
news:1_616284_67ba34b830894df95eae664217bd01d5@aut oforumz.com...
> How's it going? My '93 Concorde has just started to do something
> that's quite unnerving. Whenever I step on the accelerator, the car
> starts to "buck", like it's hesitating or trying to get in gear or
> something.
>
> It doesn't matter how fast or slow I'm going (it also bucks while I'm
> idling @ traffic lights, stop signs, etc.), the car shakes and bucks.
>
>
> However, when I take my foot off the gas and either coast or apply the
> brakes, the bucking stops and it's smooth riding. A friend thinks it
> could be fuel-pump related or maybe the timing belt. Is she on the
> right track? ops:
>
> Many thanks for reading my post!
>
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"rushzep" > wrote in message
news:1_616284_67ba34b830894df95eae664217bd01d5@aut oforumz.com...
> How's it going? My '93 Concorde has just started to do something
> that's quite unnerving. Whenever I step on the accelerator, the car
> starts to "buck", like it's hesitating or trying to get in gear or
> something.
>
> It doesn't matter how fast or slow I'm going (it also bucks while I'm
> idling @ traffic lights, stop signs, etc.), the car shakes and bucks.
>
>
> However, when I take my foot off the gas and either coast or apply the
> brakes, the bucking stops and it's smooth riding. A friend thinks it
> could be fuel-pump related or maybe the timing belt. Is she on the
> right track? ops:

Your friend is either a good guesser or she knows something about cars.

Ted