I have a 99 ATM 4DHL and the stearing wheel "Front end" shakes at 35 - 92 and 120+ mph, any idea what's causing this?

it's not really really bad but it has a "shimmy" to it and it's uncomfortable.

 

when my car used to shake at higher speeds. it was because i had a bad tire. the tire had holes in it, but slow leaking holes, and it was poorly balanced because of this. i would suggest you make sure all your tires still have weights on them, before you do anything.

 

The tires are out of balence. Take them and have them balaenced. Either that of the wheels are bent.

 

id have to agree, with it shaking as early as 35mph.. and up to 90s and then again at 120+.. it definately sounds to me like an improperly balanced wheel (or wheels) or possibly even a poor alignment.

 

I had a Tie Rod going bad on my that gave me the same symptons at different speeds

Greg

 

My friend seems to think I broke something from "cornering to hard?" I agree on out of balence more than any thing. I hear that Dodge uses a smaller weight like a 1/4 or something that most places don't use for balencing that you have to get done at a dealership.

Ever hear such a thing?

Thankx every one, get it looked at monday.

 

check your tire preasure, have them balanced. and look to see if you broke a tie rod, or any other suspension part near the wheel.

on my moms car she broke her sway bar and we never knew until we took the wheel off to see it.. she drove around for a few months that way.

 

I've heard that the control are bushings also give the same symptoms

 

Yeah bottom line is alignment, balance the tires, look for broken parts.

 

First - what is ATM? 4DHL? I'm going to assume 4-door highline automatic? Just not acronyms I'm familiar with...

1st gen Neons have a reputation for the "70 mph shakes" that is typically caused by worn control arm bushings. Replacing them with poly tends to solve the problem. The exact speed varies - mine used to happen at 72-75 mph.

There are any number of suspension components/factors that could be contributing - front strut tower bearings, inner and outer tie rod ends, ball joints, worn or bent struts, damaged rotors, damaged wheels, damaged tires, damaged axles, out-of-balance, out-of-alignment... just off the top of my head.

The factory service manual specifically states to inflate the tires (cold) to the maximum pressure indicated on the sidewall when speeds are routinely above 75mph, and to consult the tire manufacturer for sustained speeds above 90 mph. Are you doing this? I noticed quite a difference in steering response when I inflated my Yok's to 44 psi from the factory 32 psi during my 2500+ freeway miles per month. But that's with no power steering...

You aren't hitting 120+ mph. The speed limiter kicks in at 118 mph.

Best of luck!