This weekend my plan was to change my flex disc before I die on the road. Whenever I would accelerate the whole car would grind and shake until I was in 3rd gear. So I jacked up the car put it on stands and went to work. Dropped the cross memeber and attempted to remove the bolts to luck. I even kicked the wrench no sucess. I was told by a friend to use PB Blaster, so I soaked the bolts over night. Came back in the morning still would not break loose by hand. I still had to kick all 6 bolts. Total time if bolts come right off about 45 mins, very easy fix. I have attached a picture of what was left of the old flex disc. And if anyone needs a writeup and pictures on changing a flex disc I can write it up.

 

What are the symptoms of a poor flex disc?

 

LOUD and OBNOXIOUS "THUMP" from undearneath, both front and rear...usually when you let off the gas pedal.

 

would a jerky kind of grinding noise when shifting from park to drive constitute a bad flex disc by any chance?

 

no, that sounds like a tranny problem to me.

 

When I let off my gas pedal, I hear a squeak rather than a thump....Its not like a squeak that you would hear from brakes when slowing down; it's more like a squeak that you would hear from an old door as it shuts. BTW, I have only heard the squeak at low speeds, it may occur at high speeds but i usually dont pay attention and may have heard it and not remembered...Would my squeak be a sign of a bad flex disc...?
How much was the cost for the repair?

-OG

 

Mine was and grinding thumping at low speeds. It would also make a sort of lunging when shifting from park to reverse and drive. Mine never whined. From research on the board I have also heard it cases road vibration at highway speeds. I have not been on the highway yet to see. Next week is coolant flush and oil leak fix. August is my annual car month where I fix everything and preventative maintenance.