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loud brake squeal only when backing up/reversing

7.9K views 4 replies 3 participants last post by  maonca  
#1 ·
Hi all and hope everyone is keeping well,

Lots of discussion about this subject although each case is slightly different than mine, so bear with me... its on a 2012 Camry and posting here as it should not be a make/model/year specific issue.

Issue: The driver side front has a loud squeal when backing up with either no brakes applied or slight brake applied, not just in the morning but whenever I am backing up. No noise when driving forward which brakes fine.

Background: Did my own front brake job with new rotors, pads w hardware
  • greased the shims, pad top/bottom edges, pad backing plates
  • cleaned & lubed all slider pins.
  • degreased the new rotors.
  • unsure what went wrong but driver side upper caliper bolt came off and was lost after a few weeks/months (passenger side was good), lower bolt was loose and about to come off (originally did it to torque spec). Re-did it with blue lock-tight + torque spec so it should be good now.
  • re-checked everything, bracket/bolts are on fine, caliper/bolts on fine, nothing loose.
  • dust cover not touching the rotor
  • I see enough clearance between rotor and bracket so that should not be the issue.
  • wheel turns fine, although need to test-turn it in reverse when on the jack this weekend.
  • feels pretty good when driving forward and brakes fine, no pulling to either side, no squealing etc.
  • caliper is fine as it retracted without issues when doing the brake job so unlikely it is seized.
  • was fine prior to brake job so something I did or with the components or both...

Any experiences or thoughts around this?
 
#5 ·
Hi Petrol, you just solved the issue!

After getting someone to listen to each wheel outside the car while I backed up, they confirmed its the rear passenger side brake, which both sides are actually due for change as well (will check e-brake for sticking during the change as well). I always incorrectly assumed the front because it happened after I did the front brakes...

Once again, thanks for your reply.
maonca