Changed brakes and now I hear a knock noise when I brake!!
#1
Driver School Candidate
Thread Starter
Join Date: Mar 2005
Location: VA
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
Changed brakes and now I hear a knock noise when I brake!!
Hello!
I'm hoping someone can help me with a really weird problem that I've been unable to identify. Recently, I changed the brakes on my 2006 Lexus GS300. Everything went real smooth with changing the front and back brakes.
When I took it for a test drive, I immediately noticed a SINGLE knock noise when I pushed on the brakes. Also, I noticed that sometimes when I got +50 mph, I'll hear the knocking noise in a repetitive fashion. If I gently apply pressure on the brakes, the knock noise stops. If I let go of the brake, the knock noise returns. It sounds like the knock noise is coming from the front-driver side area.
Does anyone have any ideas as to what the culprit could be? I've taken the wheel off a few times, took the brake pads off, put them back on, made sure the caliper screws were tight, etc.
Thanks!
I'm hoping someone can help me with a really weird problem that I've been unable to identify. Recently, I changed the brakes on my 2006 Lexus GS300. Everything went real smooth with changing the front and back brakes.
When I took it for a test drive, I immediately noticed a SINGLE knock noise when I pushed on the brakes. Also, I noticed that sometimes when I got +50 mph, I'll hear the knocking noise in a repetitive fashion. If I gently apply pressure on the brakes, the knock noise stops. If I let go of the brake, the knock noise returns. It sounds like the knock noise is coming from the front-driver side area.
Does anyone have any ideas as to what the culprit could be? I've taken the wheel off a few times, took the brake pads off, put them back on, made sure the caliper screws were tight, etc.
Thanks!
#5
Driver School Candidate
Thread Starter
Join Date: Mar 2005
Location: VA
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the great details. I check these things and everything checked out. Going to have a buddy look sometime this weekend as well. Any other thoughts?
Trending Topics
#8
Driver School Candidate
Thread Starter
Join Date: Mar 2005
Location: VA
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
Thanks for the response guys! Forgot this past weekend was a holiday weekend so my wife had a bunch of other stuff planned for me. Ugh.
So the single-knock-noise doesn't occur when I go on reverse. Is that a good thing? Hah. I double checked and confirmed that I installed shims when I did the brake job (the old shims). Thanks again guys for the help!
So the single-knock-noise doesn't occur when I go on reverse. Is that a good thing? Hah. I double checked and confirmed that I installed shims when I did the brake job (the old shims). Thanks again guys for the help!
#9
Did you lube the back of the pads with the grease/compound on the back of the pads and between the back of the pads and the shims? Did you try setting the parking brake hard then releasing it? Does any of the rotors heat up after driving a while?
Thread
Thread Starter
Forum
Replies
Last Post
liquidx
Suspension and Brakes
3
09-09-10 05:56 AM
GirlDriver
Suspension and Brakes
3
04-01-10 05:23 PM