2002 cadillac struts replaced, now car shakes at higher speeds
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 2 of 2
Suspension, Brakes and Tires Discussion, 2002 cadillac struts replaced, now car shakes at higher speeds in Item Specific Cadillac Discussion; Hello everyone, this is my first post and I am desperate! I drive a 02 sts w/109k miles. I live ...
  1. #1
    benneyoboy is offline Cadillac Owners Member
    Automobile(s): 2002 sts 109k
    Join Date
    Jul 2011
    Age
    24
    Posts
    1

    2002 cadillac struts replaced, now car shakes at higher speeds

    Hello everyone, this is my first post and I am desperate!
    I drive a 02 sts w/109k miles. I live in MI and I am in college. I got an internship in Houston, so I drove down to Houston. When I arrived here I was told I needed new front struts by the local mechanic. I don't have much $, so I bought used original struts on ebay. They said that they would work, but now that I have them installed, the car says service suspension SYS and max speed of 90. (I think this is bec. I need to have electronic f9 struts, and the person I talked with from ebay said I didn't need the f9, and I stupidly believed him bec I gave him my VIN #). The car drives great after the new struts, but when I go over 65 or so the car slightly shakes. The mechanic says that it is either an alignment problem(they couldn't align bec of the rust i guess) or the tires need to be balanced. So, I take it to discount tire and they say the alignment is irrelevant, but I should try to balance the tires. I balance the tires and nothing changed. The tires are about 6 months old and this shaking problem I did not have until the new struts were installed. Does anyone have any clues/advice/ anything. I need to get home to Michigan in a few weeks and I do not feel comfortable driving on the freeway with the all vibration.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    41,580

    Re: 2002 cadillac struts replaced, now car shakes at higher speeds

    Several things - Look at the car's build date on the driver's door sticker - the tire rating sticker. If the date is after 01/02 the car takes VERY different struts from the earlier versions.

    Highway vibration after suspension work is usually due to wheel runout and/or tire balance. Wheel runout is caused by dirt or rust chips between the hub and rotor or between the rotor and wheel. Those 4 mounting surfaces must be absolutely clean and smooth, with the lug nuts (remove the decorative caps first) torqued to 100 ft/lb in a crisscross star pattern. If all is squeaky clean and torqued properly, then you might invest in a Hunter Road Force balance job. NOT cheap. Otherwise, suspension arm bushings, upper strut mounts/bearings, sway bar bushings, tie rod ends.

    The service suspension and speed limited messages are due to the original suspension control circuits not being either connected properly or because of the improper struts. The suspension control system MUST "see" the proper wiring resistances and control feedback. Do some snooping in Discussions, item Specific: Cadillac Tech Tips (near here) to find suspension message workarounds.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting