Front End Noise While Braking
97GreenGTP
10-02-2006, 12:06 PM
I have a 97 GTP with 150 K miles. It been running good but last week I started hearing some noise from the front end when I brake. Here is what happens:
I can hear some faint noise like the tire is out of balance when crusing at 65-70 miles. I did get the tires rotated and balanced so that is ruled out.
When i brake at 70 MPH, everythng is fine until i come to around 50 MPH. I start hearing noise(pulsating noise which gets real loud before dying down) from the front end (probably front right) and it dies when i reach around 30 MPH. There is no vibration in the steering wheel. I changed all four brakes (new rotors and pads) about 3 months ago and since there is no vibration when i slightly press the brake pedal at 70 MPH, warped rotors can be ruled out too.
Any feed back on the problem will be appreciated.
Thanks in advance.
I can hear some faint noise like the tire is out of balance when crusing at 65-70 miles. I did get the tires rotated and balanced so that is ruled out.
When i brake at 70 MPH, everythng is fine until i come to around 50 MPH. I start hearing noise(pulsating noise which gets real loud before dying down) from the front end (probably front right) and it dies when i reach around 30 MPH. There is no vibration in the steering wheel. I changed all four brakes (new rotors and pads) about 3 months ago and since there is no vibration when i slightly press the brake pedal at 70 MPH, warped rotors can be ruled out too.
Any feed back on the problem will be appreciated.
Thanks in advance.
97GreenGTP
10-03-2006, 03:06 PM
Anyone????
BigBL87
10-03-2006, 03:15 PM
I have kind of a grinding/catching noise when I brake. It's not paticularly loud, but I dunno if that's what you're talking about. I've narrowed it down to a problem with an ABS sensor, which I'm going to avoid replacing until I have the money. Dunno if that applies, but that's my brake noise:frown:.
richtazz
10-04-2006, 08:36 AM
Make sure the caliper bolts and the caliper bracket to spindle bolts are still tight. It could also be a tie rod end, strut mount or control arm bushing.
airjon23
10-04-2006, 09:35 PM
Hi...newbie here....
My '98 Grand Prix GT just started doing the same thing @ 123,000 miles. When you figure out what it is, please let me know!
Nice forums, by the way!
My '98 Grand Prix GT just started doing the same thing @ 123,000 miles. When you figure out what it is, please let me know!
Nice forums, by the way!
97GreenGTP
10-19-2006, 10:10 PM
Guys, We finally found the problem. I took it to a mechanic and he told me that the brake rotors were warped. At first I didnt agree since I had new rotors few months back but when his explanation convinced me. Faced the rotors and it stops smoothly now. His explanation was:
Our cars have floating calipers and they float on a pin.While installing new rotors/ pads, if you dont grease those pins with high temp grease, the calipers might not slide smoothly. So when u take ur foot off the brake pedal, one of the pads may stay in contact with the pad. As a result, the rotors heat up and they get warped.
Our cars have floating calipers and they float on a pin.While installing new rotors/ pads, if you dont grease those pins with high temp grease, the calipers might not slide smoothly. So when u take ur foot off the brake pedal, one of the pads may stay in contact with the pad. As a result, the rotors heat up and they get warped.
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