i have a 92 5.0 lx and at most speeds its fine but right around 75-80 theres a shimy, it seems like its coming from the back bu im not sure. could it be tires out of ballence or something bent?

 

define shimy plz

 

ok more like a shake. theres defenitally some vibration there. stuff inside(plastic trim parts) start rattling.

 

sometimes bad u-joints can cause that

 

or driveshaft. Have you put in gears recently?

 

i havent put gears in it but the guy i bought the car from said he put 373's in it.

 

My Corolla used to vibrate just below 70mph...after new tires, balancing & alignment it went away..smooth to 100+mph now..lol..though it takes a while to get there.



When's the last time you had the tires balanced? Just a thought..not sure if that would cause what you are describing, though.

 

I had a bad shimmy on the highway and the motorsport aluminum driveshaft was what fixed it.

 

I ONCE HAD A MUSTANG WITH A BAD SHIMMY BETWEEN 70 AND 80 MPH.....IT TURNED OUT THAT THE PREVIOUS OWNER HAD RUN NITROUS ON THE CAR WHICH BENT THE AXLES. ONCE I REPLACED THE AXLES THE SHIMMY MAGICALLY DISAPEARED FOR A WHILE. EVENTUALLY I HAD TO REPLACE THE ENTIRE CAR ONE PIECE AT A TIME AT A COST OF OVER $100,000 JUST TO MAKE SURE THE SHIMMY STAYED AWAY.

 

Wow.......this dude's ignorant.