Break noise while stationary

jants13 · 04-24-2012, 12:00 PM

2005 A6 4.2L Quattro with sports package.. It's the single piston design calipers in the front.

So when I press on the brakes while stationary (or moving for that matter) there's some squeaking or creaking noise coming from the front left wheel. Has anyone ever seen this before? It went away for a while with new pads and a new dust cover for the piston (which doesn't seem to want to stay on there very well as it stretches out). With the misplaced dust cover, could the caliper be damaged and cause that noise? The pads are less than a year old at this point though so I'm doubting that that's the problem again..

Thoughts?

Thanks,
- JR

KevinGary · 04-24-2012, 03:22 PM

Wheel bearings.

jants13 · 04-24-2012, 03:27 PM

Quote:

Originally Posted by KevinGary

Wheel bearings.

Really? That's an interesting idea.. any explanation as to why wheel bearings would cause this?

tenspeed · 04-24-2012, 05:58 PM

Quote:

Originally Posted by jants13

So when I press on the breaks while stationary (or moving for that matter) there's some squeaking or creaking noise coming from the front left wheel. Has anyone ever seen this before?

I have heard of it before on GM cars. They has a TSB out about it. Basically, it's the caliper piston making noise and they have a special lube to fix it. My Pontiac used to do it but the noise went away on it's own.

I've never heard of a wheel bearing making noise when stationary and applying the brakes. Usually bad bearings first make noise when turning.

KevinGary · 04-25-2012, 02:14 AM

I missed the word stationary in your post. So nix the wheel bearing.

Turborusty · 04-25-2012, 09:54 AM

You had me intrigued at "break sound"

You lost me at "break sound"

Hate me for grammar/spelling issues, go ahead. We all have our pet peeves.

Turborusty

jants13 · 04-25-2012, 11:10 AM

Quote:

Originally Posted by tenspeed

I have heard of it before on GM cars. They has a TSB out about it. Basically, it's the caliper piston making noise and they have a special lube to fix it. My Pontiac used to do it but the noise went away on it's own.

Yea see that's why I'm thinking it has to do with the dust boot on the caliper not wanting to stay on there.. Thanks for the direction. You wouldn't happen to know off the top of your head where to find that TSB for the GM cars? I'll try Googling I guess. And the other thing is I need to figure out how to make the dust boot stay on there better. The end that's on the piston is fine, it's the side that's on the caliper that comes off all the time. I'd hate to use some sort of glue. Maybe I can file down the groove on the caliper to be slanted the other way...

Quote:

Originally Posted by KevinGary

I missed the word stationary in your post. So nix the wheel bearing.

Consider it nixed.

KevinGary · 04-25-2012, 04:29 PM

Quote:

Originally Posted by Turborusty

You had me intrigued at "break sound"

You lost me at "break sound"

Hate me for grammar/spelling issues, go ahead. We all have our pet peeves.

Turborusty

LOL.

jants13 · 04-26-2012, 02:19 PM

Quote:

Originally Posted by Turborusty

You had me intrigued at "break sound"

You lost me at "break sound"

Hate me for grammar/spelling issues, go ahead. We all have our pet peeves.

Turborusty

Sorry. English is not my first language, or even second for that matter..

jants13 · 05-07-2012, 10:07 AM

So I've fixed this and formulated a theory in the process..

The pads were practically new and the dust cover was in place as well. What seemed odd though that the two grooves that are on the face of the pad were full of dirt and/or break dust. Nut just a full, but packed in. Had to scrape them with a screwdriver to get them clean.

Not the actual photo, but you get the idea. As the brakes are are used, dust is generated. The dust get in the two grooves on the pad. If the disks are worn, and there is a slight groove on the outer rim of the disk so that the dust that is generated does not have an escape path and hence packs into the groove.

So next up for me then is new disks.. but for now, I believe that's what was causing the creaking noise..

04-24-2012, 03:22 PM	#2
KevinGary AudiWorld Super User Garage is empty, add now Join Date: Mar 2005 Posts: 2,657	Wheel bearings. __________________ Original owner of a 2005 A6 4.2 - Night Blue Pearl Effect, Platinum Voltera Leather and Wood Interior, Navigation, Premium Sound, Sirius Satelite, DVD Player with Screens in Headrests, Heated Front and Rear Seats, Heated Steering Wheel, Ski Sack & Headlight Washers, Advanced key, Hartmann S8 Summer Wheels, Continental DW (Summer), Michelin Pilot Alpin PA4 (Winter), Solar Sunroof, Power Rear & Manual Side Sunshades, Rear Side Airbag Supplemental Restraints, Rear Parktronic, Voice Recognition, Tire Pressure Monitoring System, Bi-Xenon Adaptive Headlights, Power Adjustable Steering Column, Auto Dimming and Compass Interior Mirror, Power Folding and Dimming Exterior Mirrors, Memory Seats, Trip Computer, Homelink, Storage Package, H&R Rear Sway Bar, Koni FSD dampers. TSB Library link (Thanks to Dr. Cold for his help in setting this up) http://uberlame.com/a6_tsb/

04-25-2012, 02:14 AM	#5
KevinGary AudiWorld Super User Garage is empty, add now Join Date: Mar 2005 Posts: 2,657	I missed the word stationary in your post. So nix the wheel bearing. __________________ Original owner of a 2005 A6 4.2 - Night Blue Pearl Effect, Platinum Voltera Leather and Wood Interior, Navigation, Premium Sound, Sirius Satelite, DVD Player with Screens in Headrests, Heated Front and Rear Seats, Heated Steering Wheel, Ski Sack & Headlight Washers, Advanced key, Hartmann S8 Summer Wheels, Continental DW (Summer), Michelin Pilot Alpin PA4 (Winter), Solar Sunroof, Power Rear & Manual Side Sunshades, Rear Side Airbag Supplemental Restraints, Rear Parktronic, Voice Recognition, Tire Pressure Monitoring System, Bi-Xenon Adaptive Headlights, Power Adjustable Steering Column, Auto Dimming and Compass Interior Mirror, Power Folding and Dimming Exterior Mirrors, Memory Seats, Trip Computer, Homelink, Storage Package, H&R Rear Sway Bar, Koni FSD dampers. TSB Library link (Thanks to Dr. Cold for his help in setting this up) http://uberlame.com/a6_tsb/

04-25-2012, 09:54 AM	#6
Turborusty AudiWorld Member Garage is empty, add now Join Date: Jan 2006 Posts: 398	You had me intrigued at "break sound" You lost me at "break sound" Hate me for grammar/spelling issues, go ahead. We all have our pet peeves. Turborusty __________________ '05 A6 Quattro 4.2 Black on Black/Beige Premium Sport Cold Weather Warm Weather Tech Nav Factory Chrome 18's '03 Dodge Durango R/T Black on Black/Gray 5.9L AWD Factory Chrome 17's Magnaflow Exhaust

05-07-2012, 10:07 AM	#10
jants13 Audiworld Junior Member Garage is empty, add now Join Date: Feb 2010 Location: PDX, OR Posts: 62	So I've fixed this and formulated a theory in the process.. The pads were practically new and the dust cover was in place as well. What seemed odd though that the two grooves that are on the face of the pad were full of dirt and/or break dust. Nut just a full, but packed in. Had to scrape them with a screwdriver to get them clean. Not the actual photo, but you get the idea. As the brakes are are used, dust is generated. The dust get in the two grooves on the pad. If the disks are worn, and there is a slight groove on the outer rim of the disk so that the dust that is generated does not have an escape path and hence packs into the groove. So next up for me then is new disks.. but for now, I believe that's what was causing the creaking noise.. __________________ Blue 2005 C6 A6 4.2L, Quattro && Yellow 1986 Fiero GT 3.4L "If it wasn't for physics and law enforcement, I'd be unstoppable!"

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