Okay, for those of you guys been helping me pin point my car stumbling and crazy idle,,, it was my opti, water pump, plugs and wires.. thanks alot, but hopefully it doesnt come back.

Anyways, before the opti, i already had this vibration and it didnt go away, the whole car vibrates worste starting at 65 mph and kind of starts a lilltle bit starting 40mph(kind of humming vibration during this speed)..

I know its not my tires/rims because I bought stangkilla's rims (good deal) and had my previous wheel and tire balanced before we exchanged wheels...He did not have any vibrations on my tires nor his tires,, and when we switched, I had vibration on both(my tires and his tires).

The car seems to vibrates worses after driving for awhile...but when I first hit the highway it still vibrates starting at 65mph but it gets worse and worse as driving time increased at the same speed.. whats the deal

I ordered my LS1 drive shaft through Jason Cromer again for 225 and hoping that would fix the problem...

but what else could it be rather than a drive shaft,, I'm looking for the worse possible scenario

 

SOMEBODY?

 

You know it is supposed to be 24 hrs before you TTT and not 20 minutes, right? Why don't you wait until you get your new ds and then report back?

 

you might want to check the front wheel bearings,Mine went and vibrated on the highway.Funny thing was you couldnt tell by jacking it up and shaking the wheel only sighn was it made a humming sound at speed.

 

Good call on the bearings. But what about the bushings. Have you checked your tie rod bushings ect? Definatly sounds like something suspension related.

 

Okay, so when I get my brand new DS from Jason, do I have to get it balanced or just plug and play? Also how much am I looking at saving to replace my U-joint. thanks