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2004 Chrysler Concorde Question: What would cause the engine to "buck" when during sudden acceleration?

 

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bham311, Rincon, GA, April 24, 2013, 18:13
 Rookie

When passing or attempting to accelerate quickly the entire car "bucks", it's not a stutter or hesitation but rather it feels like the car is going to stop dead in its tracks. It only lasts a split second then resumes normal operation. I have recently had cam and crank sensors replaced with OE parts, water pump, timing belt and coil packs have also been replaced. The only other issue is that the car will stall frequently on start up or when in heavy traffic.

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  • Answer #1

    ziptie12 April 26, 2013, 18:27
     Master

    Any chance wiggling the key in the ignition switch aggravates the symptom? When it stalls , does it start right back up? When it 'bucks' on you out on the highway , do the guage lights all flicker?

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    04Concorde_owner, September 29, 2013, 18:38
     Rookie

    Curious about your thoughts on the writer's problem. My '04 Chrysler Concorde bucks badly when going down the road. It usually doesn't do it at slow speeds. My dash lights have flickered a few times but haven't done that recently & I don't remember it being simultaneous to the bucking. We had a sensor replaced (cam I think?). A couple of times it has totally died while going about 55. It will also drive fine for 5 miles but after sitting 15 or 20 minutes it won't start. I sit and wait another 10 or 15 and it starts up. Usually it goes fine for the first 15 miles or so city and highway. Two mechanics have looked at it and can't figure it out.Yesterday it stalled while waiting for a train and then didn't start up immediately. It took 3 or 4 minutes and seemed fine after that. Any ideas?

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