Brake shuddering

Cougar · 10-14-2007, 05:42 AM

Yep, me again.

Wife's '97 F-250HD 7.5 ext cab automatic has developed a shuddering on medium-to-hard braking. I've already replaced the front rotors, pads, etc, and even went as far as to replace the rear drums and rear brakes, but the shuddering persists. Oh, and new front shocks, too (rears have <10k miles)!

What should I be looking for? HELP!!!

1saxman · 10-14-2007, 05:01 PM

Rotors/drums.

PickUpGirl787 · 10-14-2007, 06:16 PM

can you explain the shuddering some more, like does it feel like warped rotars or what. Give us an idea here of what it feels like

because my bet is on the rotars

Cougar · 10-14-2007, 07:06 PM

Brand new rotors. Twice.

1bj · 10-14-2007, 10:39 PM

does pull to either side when you brake??

1saxman · 10-15-2007, 03:47 PM

'Brand new rotors. Twice'

Next time, have the new rotors surfaced before installation to make sure there's no runout. You will have to take the latest ones out and have them resurfaced to stop the shudder.

Ford4x4Chik27 · 10-15-2007, 04:27 PM

Have you had the tires checked? My first instinct was the rotors too, but apparently it's not that. Could be death wobble, but that doesn't narrow it down to anything. Check your steering, and your wheel bearings.

Cougar · 10-15-2007, 05:42 PM

There's no pulsing in the brake pedal like you get with warped rotors. I'm wondering if it could be a worn driveshaft center support bearing or maybe a bad trans mount causing a driveline shudder.

Tires don't seem to make a difference. It does it with the summer tires as well as the snow tires.

You got me wondering about steering linkage - (truck just developed a leaky steering box), but there isn't any steering wheel vibration.

75K30 · 10-15-2007, 06:12 PM

A driveline problem usually does not appear when applying the brakes, this usually occurs under acceleration, but checking the center support bearing is a good idea.
I would check all of your steering components and your ball joints.

bubbas91lariat · 10-15-2007, 07:22 PM

Sorry im so late on this one, but i would have to say that either all your tires, summer and snow, are all off balance or, im not sure if shudder would happen with this, but maybe it could be out of alignment. Course, im just a 15 year old, what do i know??? Thats probably what all yall older folks are thinkin, aint it??? Well, thats what i think it could be. Good luck figurin it out man.

10-14-2007, 05:42 AM	#1
Cougar Junior Member Join Date: Oct 2007 Location: N.E. Ohio Posts: 6	Brake shuddering Yep, me again. Wife's '97 F-250HD 7.5 ext cab automatic has developed a shuddering on medium-to-hard braking. I've already replaced the front rotors, pads, etc, and even went as far as to replace the rear drums and rear brakes, but the shuddering persists. Oh, and new front shocks, too (rears have <10k miles)! What should I be looking for? HELP!!!

10-14-2007, 06:16 PM	#3
PickUpGirl787 Senior Member Join Date: Dec 2006 Location: Illinois Posts: 711	can you explain the shuddering some more, like does it feel like warped rotars or what. Give us an idea here of what it feels like because my bet is on the rotars __________________ Ashley My first truck was a 1988 Chevy 1500 with the 305 My new truck is a 1997 GMC 1500 with the 350

10-15-2007, 04:27 PM	#7
Ford4x4Chik27 Senior Member Join Date: Sep 2004 Location: Sac-Town, Cali Posts: 1,585	Have you had the tires checked? My first instinct was the rotors too, but apparently it's not that. Could be death wobble, but that doesn't narrow it down to anything. Check your steering, and your wheel bearings. __________________ '93 Isuzu Amigo, Toyota Axles/Tcase/Drivelines, 35" MTR's '01 Pathfinder, making a huge effort to keep it stock, since it's my DD

10-15-2007, 07:22 PM	#10
bubbas91lariat Senior Member Join Date: Dec 2005 Location: Elberton,GA Posts: 824	Sorry im so late on this one, but i would have to say that either all your tires, summer and snow, are all off balance or, im not sure if shudder would happen with this, but maybe it could be out of alignment. Course, im just a 15 year old, what do i know??? Thats probably what all yall older folks are thinkin, aint it??? Well, thats what i think it could be. Good luck figurin it out man. __________________ IF YOU AINT FIRST YOUR LAST!!!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

10-14-2007, 05:01 PM	#2
1saxman Full Member Join Date: Jan 2007 Posts: 32	Rotors/drums.

10-14-2007, 07:06 PM	#4
Cougar Junior Member Join Date: Oct 2007 Location: N.E. Ohio Posts: 6	Brand new rotors. Twice.

10-14-2007, 10:39 PM	#5
1bj Senior Member Join Date: Jun 2006 Location: Hampton, Va Posts: 105	does pull to either side when you brake??

10-15-2007, 03:47 PM	#6
1saxman Full Member Join Date: Jan 2007 Posts: 32	'Brand new rotors. Twice' Next time, have the new rotors surfaced before installation to make sure there's no runout. You will have to take the latest ones out and have them resurfaced to stop the shudder.

10-15-2007, 05:42 PM	#8
Cougar Junior Member Join Date: Oct 2007 Location: N.E. Ohio Posts: 6	There's no pulsing in the brake pedal like you get with warped rotors. I'm wondering if it could be a worn driveshaft center support bearing or maybe a bad trans mount causing a driveline shudder. Tires don't seem to make a difference. It does it with the summer tires as well as the snow tires. You got me wondering about steering linkage - (truck just developed a leaky steering box), but there isn't any steering wheel vibration.

10-15-2007, 06:12 PM	#9
75K30 Senior Member Join Date: Jul 2006 Posts: 2,992	A driveline problem usually does not appear when applying the brakes, this usually occurs under acceleration, but checking the center support bearing is a good idea. I would check all of your steering components and your ball joints.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
1949 3800 chevy panel brake	dougmayer	Chevy Truck Forum	2	08-22-2007 09:07 AM
Brake light problem	gejandsons	GMC Truck Forum	2	07-11-2007 03:37 PM
No brake lights	gejandsons	Chevy Truck Forum	2	07-10-2007 09:28 PM
Brake fluid tip	chevyguy	General Truck Forum	4	03-20-2007 08:43 AM
Which brake pads?	ectech	Ford Truck Forum	7	02-13-2007 10:00 AM