shaking issue

thisisalex02

New Member
May 21, 2005
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hey all.... i have a 91 fox and at around 40 mph the car kinda shakes..not the whole car but like where the middle console is inside, it starts to shake.. when i press the gas the shakin goes away... but when i let go of the gas thats when the shaking occurs... not sure what it is. Do u think it might be the exhaust hitting the driveshaft?? thanks everyone !
 
I would get under there and check some things out. Get a prybar or a long flathead screwdriver. See if you are getting any play at the driveshaft, may very well be bad U-joints. Another place to check would be to pry between the trans and body and check the trans mount. Also, check the rear controll arms for play. I doubt it is a balance issue.
 
I had the same problem, it would go away with acceleration but shake my fillings out on decel. My problem was 3 of my driveshaft bolts were almost all the way backed out and the fourth was not necessarily tight but the best of the bunch. The guy that sold it to me had an aluminum DS that he kept for his new car and wasnt exactly taking his time when he put the old DS back on.
 
yea i just got a new 5.0 and manual tranny put in yest from a wrecked 89, but that damn shaking is still there... i replaced the drive shaft with the one off the wrecked stang i bought. i mean its only when i let go of the gas when the shaking happens..once i accelerate it goes away.... its just annoying can this mess up anything in the long run, also you all think its more than likely with the drive shaft??