hi guys and girls, i need help, there is this stupid shake that is really botherin me, it only happens after 75mph, the car shakes and if i step on the gas i can feel it in the pedal i can go faster but the car feels like its gonna fall apart so i dont, i checked the d.s and its ok but it has a little free play back and forth. im sure thats ok, i greased my u joints and it still does it, my wheels are balanced ok. does anyone know what it could be?

 

Tire out of round, or a bent wheel will give those same symptoms.

 

tire pressure maybe??

Hmmm, now that I think about it, when I put new wheel bearings and front rotors on my FB, this same thing happened to me. I could feel it in the gas pedal and it seemed to get worse when I turned the wheel. I wish I could help you out, but my car is currently getting bushings installed and then off to the body shop.

Ryan

 

could it be wheel bearins, because the rear wheel bearins are bad, they howl so loud i got to change them

 

Wouldn't the balance got get when you mount wheels take car of this? Because I have a bounce in the rear that gets worse after 75-80ishmph and I know one of my wheels is slightly bent.

Oh no!

 

i get the same thing i just thought it was a normal thing, and then i thought since i live in illinois it is b/c of the poor condition of the road

 

Sounds like a driveshaft to me. Get your balance checked.

 

Its hard to tell. Since it olny happens at a certain speed we can probably assume its not in the engine or tranny because otherwise it would happen at specific rpm in any gear. That leaves these spinning parts; driveshaft, differential, rear axles, brakes and wheels on all 4 corners.

So check them all out. The driveshaft should have no discernable play side to side front or rear, if it does you need new ujoints. Skip the diff, we'll asume its ok. You say your rear wheel bearings make noise, that needs to be fixed as well. Tires are all balanced you say, well unless the drums/rotors are severely worn so that they are out of balance they are probaly ok as well. Don't forget old bushings. Any of these things will feel worse with loose, hard old bushings.

I'll bet its not just one thing that causes this, its probably a combination and until you start repairing things it won't go away until you fixed each issue. Its an old car, things get wobbly and loose over time.

 

well so far ive replaced
-front sway bar links and buxhings
-rear sway bar links, not bushings yet, and im doin the rear brakes this week