Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

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

Results 1 to 8 of 8

Thread: Diagnosed "Suspension" Rattle

  1. #1
    c5 rv's Avatar
    c5 rv is offline Cadillac Owners Connoisseur
    Automobile(s): 91 Allante (gone), 06 SRX (gone)
    Join Date
    Jun 2003
    Location
    Michigan
    Posts
    4,396

    Diagnosed "Suspension" Rattle

    After a year and multiple tries by my mechanic, my son-in-law (a mechanic) and I diagnosed an ongoing suspension rattle as coming from the rear brakes. When going across small bumps at low to medium speed, I hear a rattle from under the car. It seems to happen when the rear tires hit the bump. My SIL and I went for a ride tonight and he confirmed hearing it. We both felt around under the car and couldn't find anything loose. I had him stand at the side of the road near a bump and he confirmed that it occurred when the rear wheels it the bump, the sound came from the rear, and it came from both sides. He then felt the brakes and said it could be the brake pads rattling. I suggested repeating the pass-by bump test but with my foot lightly on the brake. Sure enough, the car wouldn't rattle when the brakes were lightly applied.

    Maybe the wrong pads were used or the retainers are missing.


  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    carnut is offline Cadillac Owners Master
    Automobile(s): 1999 BMW 740 Il. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003
    Location
    california
    Age
    69
    Posts
    6,688

    Re: Diagnosed "Suspension" Rattle

    This is a single piston, floating caliper design. If the pads dont have the anti rattle paste applied especially to the outboard pad, the pads simply lay loose inside the caliper till a little pressure is applied. On both Allante's I've owned, I've never had to replace the rears, so I would research vendors for a 'hardware" kit to see if it included shims, but I always use a sicon based pad paste that, in a fashion, glue the pad to the caliper and provide a cushion to lessen rattles and squeaks. I would also make sure the parking brake cables are adjusted to spec to lessen inboard pad movement.

  4. #3
    babylac89's Avatar
    babylac89 is offline Cadillac Owners Fanatic
    Automobile(s): 1993 Cadillac Allante-Northstar
    Join Date
    Feb 2008
    Location
    "The OC"
    Posts
    186

    Re: Diagnosed "Suspension" Rattle

    Quote Originally Posted by carnut View Post
    This is a single piston, floating caliper design. If the pads dont have the anti rattle paste applied especially to the outboard pad, the pads simply lay loose inside the caliper till a little pressure is applied. On both Allante's I've owned, I've never had to replace the rears, so I would research vendors for a 'hardware" kit to see if it included shims, but I always use a sicon based pad paste that, in a fashion, glue the pad to the caliper and provide a cushion to lessen rattles and squeaks. I would also make sure the parking brake cables are adjusted to spec to lessen inboard pad movement.
    Absolutely great tip!!! Where are you located in California?

    Chief

  5. #4
    c5 rv's Avatar
    c5 rv is offline Cadillac Owners Connoisseur
    Automobile(s): 91 Allante (gone), 06 SRX (gone)
    Join Date
    Jun 2003
    Location
    Michigan
    Posts
    4,396

    Re: Diagnosed "Suspension" Rattle

    Thanks for the suggestions. I'm debating whether to ask my SIL if he'll do the job or take it back to my mechanic that changed them.

  6. #5
    carnut is offline Cadillac Owners Master
    Automobile(s): 1999 BMW 740 Il. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003
    Location
    california
    Age
    69
    Posts
    6,688

    Re: Diagnosed "Suspension" Rattle

    Stockton!! the home foreclosure capitol of the world!! Oh, and I meant silicon based paste not sicon. My stuff is made by BENDIX brakes, is bright pink in color and when dry has a rubber type consistancy. The bottle is about 8 ounces? Have had it probably 8 years. I only use enough to apply a THIN coat to the back side of each pad prior to install.

  7. #6
    babylac89's Avatar
    babylac89 is offline Cadillac Owners Fanatic
    Automobile(s): 1993 Cadillac Allante-Northstar
    Join Date
    Feb 2008
    Location
    "The OC"
    Posts
    186

    Re: Diagnosed "Suspension" Rattle

    Quote Originally Posted by carnut View Post
    Stockton!! the home foreclosure capitol of the world!! Oh, and I meant silicon based paste not sicon. My stuff is made by BENDIX brakes, is bright pink in color and when dry has a rubber type consistancy. The bottle is about 8 ounces? Have had it probably 8 years. I only use enough to apply a THIN coat to the back side of each pad prior to install.
    Stockton is in the mix, but Detroit is definitely #1 in forclosures and repo's!!!

    I'm definitely going to buy some of that silicon based paste and try it.

    Chief

  8. #7
    carnut is offline Cadillac Owners Master
    Automobile(s): 1999 BMW 740 Il. 2005 Jag XK8, 1988 Mercedes Benz 300 SE
    Join Date
    Feb 2003
    Location
    california
    Age
    69
    Posts
    6,688

    Re: Diagnosed "Suspension" Rattle

    The brand is CRC

  9. #8
    babylac89's Avatar
    babylac89 is offline Cadillac Owners Fanatic
    Automobile(s): 1993 Cadillac Allante-Northstar
    Join Date
    Feb 2008
    Location
    "The OC"
    Posts
    186

    Re: Diagnosed "Suspension" Rattle

    "Thanks!!!"

    Chief


Bookmarks

Cadillac Posting Rules

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Read about Lincoln | Buick | Kia Forte Forum