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post #1 of 11 Old 03-22-2013, 08:18 AM Thread Starter
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Front End vibration

I have a bad vibration in the front end when i put on brakes. If you get on the brakes hard enough it doesn't do it, but when you ease on brakes it vibrates and as you slow down it has a little bit of a lunge to it. Could this be rotors? What else could it be?
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post #2 of 11 Old 03-22-2013, 08:27 AM
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subscribe..... i got the same issue.



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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post #3 of 11 Old 03-22-2013, 08:27 PM
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Rotors. Put Powerstop drilled and slotted rotors on and end the problem. They cost less even than the Ford OEM junk. Lousy metal. Overheat a Ford rotor once and the temper is gone-does no good turning them.
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post #4 of 11 Old 03-22-2013, 09:00 PM
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Dont run drilled rotors. First, they crack easier. Second, you are losing surface area from the holes and less surface area is less friction area. You will have less braking power. Stock ford rotors are ok and you can have them turned untill you can afford new. Is the shake more in your sest and pedal or steering wheel and pedal?

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post #5 of 11 Old 03-22-2013, 09:16 PM
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Mine is pedal and steering wheel.... I know the rotors are pretty bad but I'm wondering also about the calipers. It feels like my brakes are constantly grabbing!



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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post #6 of 11 Old 03-22-2013, 09:25 PM
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I would try a few different options on seeing if the calipers are dragging. First, drive for awhile while not using the brakes much and then come to an easy stop. Get out and touch your hubs. If they are more than "warm", suspect a dragging caliper/pad. The other way would be to jack the front end off the ground and spin each tire using your judgement on how much drag should(nt) be there. If you find dragging, take the tire off, pull the caliper, and see if the pads are stuck in the anti-rattle clips. I have had rust form under the clips and squeeze so hard on the pad, I had to beat the pads off with a hammer. If thats good, see if the caliper will collapse without much force using a c-clamp.

Lee

2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
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post #7 of 11 Old 03-22-2013, 09:36 PM
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They are certainly more than warm! I've done that before and nearly cried..... I'll have to check the clips when I do rotors soon. What about slide pins?



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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post #8 of 11 Old 03-22-2013, 10:22 PM
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I've run drilled and slotted Powerstop rotors for 11 years, same set, on my 99 F350 used for general transportation, towing a 5th wheel, and drag racing. Never had a problem and it will stop on a dime. No wear and no cracks. Went through the original Ford rotors once, had them turned and wenr through them again, then went through a second set before the Powerstops.
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post #9 of 11 Old 03-23-2013, 06:57 AM
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Rotors

Before anything I would check the calipers to assure that they are free to float in and out as designed. If one is stuck it can cause pulsations and heat also. The truck will tolerate a little warpage if the calipers float properly.
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post #10 of 11 Old 03-23-2013, 07:09 AM
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Is it possible to run late 99 rotors on E99 hubs?



1999 F250 Lariat 4X4 Offroad
Under the hood: 7.3 diesel, 4in straight piped to 6in shotgun dual stacks, DIY 6637, Bigg Boost. Foil delete. Riffraff FRx. IH Bellowed Up Pipes. Wicked Wheel Gen 1. TS Chip with canned tunes
Cosmetic: Bushwhacker fender flares. Moto Metal 951 18's wrapped with Nitto Trail Grapplers 295/70/18
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