Sounds like this could be the issue. My car has a little sometimes on decel in 2nd & 3rd. I test drove a white one and it was diffucult to shift and vibrated a lot worse, I even told the salesman something was wrong with that car. I purchased a Grabber blue. I also bought an extended bumper to bumper warranty because of the white car I drove. Love my Mustang, 1800 miles and no problems yet.

 

I have 1200 miles and felt this shudder the first time last night. Had to get on it a little harder than usual in 3rd and backed off fairly quickly to make a turn and it shuddered like a woman on a horse !

So I see from reading here no has this figured out yet.

 

Ya its been figured out, its normal

 

ya its normal until something breaks because of the vibration.its just fords way of saying they dont know whats causing the vibration.they better go good for it when she blows up

 

how much vibration are we talking about? Mine vibrates when decelerating while in gear but its by no means violent enough to break anything. Most of the time I switch to neutral when coasting to a stop anyway.

 

Yes that is what most of us feel, Ford does say all normal, they talk anything from dual mass flywheel to engine cylinders shutting down as a feature, I feel in the stick, but you can also get rid of it if you tap the gas pedal real fast too...if breakdown within 5 years it's on them though..

 

or...just depress the clutch or put it in neutral.

I can't say how many times I am normally decelerating for a long period of time with the vehicle in gear. Though I guess it might affect auto drivers more

 

I have an auto and have no such vibration at all.

 

my car still vibrates bad enough at times to shake steering wheel,and feel in seat, its like having a mustang with t-5 in it that you put to much power to it,the case of the trans flexs and major vibration happens.i had an 86 that would do this.just an example.the vibration is by no means normal.makes me wonder what its doing to rest of car.but still love stangs

 

have you tried taking it out of gear?