 |
|
04-20-2007, 07:39 PM
|
 |
Hummer Authority
|
|
Join Date: Dec 2003
Location: New Braunfels/Canyon Lake, TX
Posts: 1,357
|
|
Shimmy above 70 MPH
Truck has been going from bad to worse lately. With highway driving, if I'm above 70 MPH, I start to get a pretty bad vibration. In the entire truck. That's been since I got the lift...annoying but driveable. Lately it's been doing that around 55-60 MPH after the truck has been running awhile (for the first 20-30 mins on the highway, it runs fine). It's also beginning to pull to the right something fierce if I brake hard. Thoughts on what the deal is here?
Stacy
__________________
2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
|
04-20-2007, 09:18 PM
|
 |
Hummer Guru
|
|
Join Date: Jan 2006
Location: Fairfax, VA
Posts: 2,061
|
|
Re: Shimmy above 70 MPH
Quote:
|
Originally Posted by devilsfan
Truck has been going from bad to worse lately. With highway driving, if I'm above 70 MPH, I start to get a pretty bad vibration. In the entire truck. That's been since I got the lift...annoying but driveable. Lately it's been doing that around 55-60 MPH after the truck has been running awhile (for the first 20-30 mins on the highway, it runs fine). It's also beginning to pull to the right something fierce if I brake hard. Thoughts on what the deal is here?
Stacy
|
I'm just a layman, but I assume it's a very bad allignment. Though that doesn't explain the delayed reaction. Hmmm. |
04-21-2007, 12:16 AM
|
|
Hummer Veteran
|
|
Join Date: Apr 2007
Posts: 144
|
|
Re: Shimmy above 70 MPH
Pulling to the right can be a caster or even camber issue. When you run light on caster it will happen or if your camber is not the same, or within a small degree off...
Your vibration is most likely not from the alignment. It is most likely a tire out of balance or your u joints in your rear driveshaft. How much lift do you have? What size tires?
On edit, the title says shimmy, but the post says vibration.... Please clarify.
|
04-21-2007, 01:44 AM
|
|
Hummer Guru
|
|
Join Date: Jul 2005
Location: nonpiker
Posts: 5,900
|
|
Re: Shimmy above 70 MPH
Check your half shafts.
|
04-21-2007, 03:11 AM
|
|
Hummer Guru
|
|
Join Date: Jan 2006
Location: Fairfax, VA
Posts: 2,061
|
|
Re: Shimmy above 70 MPH
Quote:
|
Originally Posted by nmu98
On edit, the title says shimmy, but the post says vibration.... Please clarify.
|
Or a vibroshimation? |
04-21-2007, 08:09 PM
|
|
Hummer Authority
|
|
Join Date: Dec 2003
Location: New Braunfels/Canyon Lake, TX
Posts: 1,357
|
|
Re: Shimmy above 70 MPH
What's the difference between a shimmy and vibration?
Stacy
__________________
2003 yellow Lux, 12" Bulletproof lift, 42" Pitbull Rockers, 20" Ultra Predators, Corsa sport exhaust, painted interior
2004 Cadillac Escalade, white diamond, dual tip chrome exhaust, 20" chrome 9-spoke rims, altezzas - TOTALLED!!!! Replaced with a nondescript 2009 Chevy Tahoe
1970 VW Karmann Ghia, black with a flame job and too many mods to list
|
04-22-2007, 01:25 PM
|
 |
Hummer Authority
|
|
Join Date: May 2006
Location: South Western PA
Posts: 1,433
|
|
Re: Shimmy above 70 MPH
to me...a shimmy is when the truck wanders a bit, like the steering components are loose....if you take the wheel and move it quickly left to right slightly...that would simulate a shimmy.....
A vibration on the other hand would be more of the feeling one gets when you hold a drill and you can feel it vibrating...or....like if you run over rumble strips...that would be a vibration.....
just my thoughts on the two....
__________________
2009 H2 Silver Ice LE
2008 H2 Lux Series, Slate Blue, everything but the air suspension - sold
2006 H2 Lux Series, Uplevel Chrome, DVD's, Slate Blue, Sun Roof - sold
"If Life Gives You Limes, Make Margaritas" - Jimmy Buffett
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
 Hybrid Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT +1. The time now is 09:35 AM.
|
