Excursion Rear End Wobble
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Joined: Feb 2010
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Excursion Rear End Wobble
I have a 2000 Excursion that required new brake rotors on the rear end. After changing out rotors I started having a wierd shake after about a month of changing them out as if they were warpped. After removing rotors and having them resurfaced issue went away for about 2 months. After that I replaced rotors and guess what its back again.
Can anyone help me out as to what the heck is wrong?
Can anyone help me out as to what the heck is wrong?
FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,242
Likes: 758
From: Houston, Texas
It depends on where you got them and how they were made...
My original rotors gave out after 9 years and 250,000 miles and I went with the best O'reilly had to offer with a lifetime warranty. It's been a few months, but haven't had a warping issue again. The ones I got looked completely different from the ones that came on the truck. They were made of a completely different material and seemed much stronger than the stock rotors.
If you didn't replace the pads at the same time, that could be your issue as well. Pads basically have to bed and form to the rotors they'll be working with. The best thing to do is to replace the rotor AND the pads and make sure everything is lubed up the way it should be.
My original rotors gave out after 9 years and 250,000 miles and I went with the best O'reilly had to offer with a lifetime warranty. It's been a few months, but haven't had a warping issue again. The ones I got looked completely different from the ones that came on the truck. They were made of a completely different material and seemed much stronger than the stock rotors.
If you didn't replace the pads at the same time, that could be your issue as well. Pads basically have to bed and form to the rotors they'll be working with. The best thing to do is to replace the rotor AND the pads and make sure everything is lubed up the way it should be.
Freshman User
Joined: Mar 2008
Posts: 41
Likes: 0
From: Toronto Ontario
When you say you had the rotors resurfaced, what did you mean? If they turned them on the vehicle or a brake lathe, that could be a big part of your problem. Never turn rotors to tue them as it removes material "mass" that just causes them to warp even faster the next time. Buy the best pads you can afford out of the range available, and the middle priced rotor. Most expensive pads have fewer binding agents in them and it is the binding agents "gassing" off that causes the majority of rotor warping.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I'll 2nd what they said about 'turning' rotors and cheap pads. (waste of time/money
)
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
Lots of opinions on what is the best.
I put slotted cryo rotors on the front and drilled and slotted rotors on the back. I have Hawk pads on both front and back. Hawk pads significantly improve braking with very little dust. I'm happy and worth the $$$!
Starting in 2004 Ford put different slide pins in the calipers. You can get the slide pin upgrade from Ford and the procedure to install them off this site, I believe, from the tech folder. Worth the $$$.
VERY IMPORTANT - you must bed the pads to the rotors when installing both. If you turn (cut) the rotors, take a piece of mid grit sandpaper and rub the brake pads on the sandpaper to get rid of any ridges and to take the glaze off the pads. This will help to bed the old pads on to new rotors.
DSMMH
I put slotted cryo rotors on the front and drilled and slotted rotors on the back. I have Hawk pads on both front and back. Hawk pads significantly improve braking with very little dust. I'm happy and worth the $$$!
Starting in 2004 Ford put different slide pins in the calipers. You can get the slide pin upgrade from Ford and the procedure to install them off this site, I believe, from the tech folder. Worth the $$$.
VERY IMPORTANT - you must bed the pads to the rotors when installing both. If you turn (cut) the rotors, take a piece of mid grit sandpaper and rub the brake pads on the sandpaper to get rid of any ridges and to take the glaze off the pads. This will help to bed the old pads on to new rotors.
DSMMH
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Junior User
Joined: Feb 2010
Posts: 62
Likes: 2
I kinda had the same problem when I did my first brake job on my Ex,and then a mechanic at Ford told me to torque all the lug nuts to 160 ft. lbs. and that took care of all the brake wobbles and shakes that it had? I know I had the lug nuts tight when I put them on the first time but when I torqued them to specs I found none of them were even close to being the same tightness as to when I used a lug wrench on them the first time? I found it pays to own a torque wrench.
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