BUCK WHEN I ACCELERATED

1995 Chrysler Concorde

Tiny

jenne

January, 30, 2012 AT 5:36 PM

I just got a 1995 Chrysler Concorde on Friday been driving smooth all weekend last night when I went out it started to clunk or buck when I accelerated in both o/d and 3rd up until about 50/60km it is a automatic transmission

It will slightly buck so I let foot off gas and slowly accelerate again

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3 Answers

Tiny

caradiodoc

January, 30, 2012 AT 6:06 PM

When does this occur? Driving? Standing still with engine running? In gear? In park? Only when driving over bumps? Do you feel it in the steering wheel? Only hear it?

Tiny

jenne

January, 30, 2012 AT 7:27 PM

While driving once reached about 20km will do that 2/3 times once hit 50/60km seems to be fin steering isnt affected and its while accelerating no bumps can hear clunking knocking sound id say and a faint whiney sound

Tiny

caradiodoc

January, 31, 2012 AT 5:42 AM

With no punctuation, I can't tell what you're saying. You drove the car once or the problem occurred once? The problem occurred at 20kph or after you drove for 20km? You gotta clarify "seems to be fin steering isnt affected".

I take "and its while accelerating no bumps can hear clunking knocking sound id say" to mean you hear something on smooth roads and you don't have to travel over bumps. If that sounds right, my first suspect would be outer anti-sway bar links but you typically can't hear them rattle at anything higher than parking lot speeds. They were a real common problem but not a safety hazard. The clue is they would be perfectly quiet in the parking lot if you turned the steering wheel just a little to either side.

Lower ball joints didn't cause a real lot of trouble but they can cause a clunk, usually when cornering or on bumpy roads. If you only hear the noise when accelerating, see if the same noise occurs when standing still in neutral and raising engine speed. If it does, suspect something driven by the serpentine belt. If the car has to be moving, it might be best to have it inspected at a tire and alignment shop. A rubber splash shield could be loose and flapping in the wind. There's also a rubber seal along the front and rear edges of the hood that could be loose.

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