new brakes still pulsating. - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 03-24-2012, 02:11 PM Thread Starter
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new brakes still pulsating.

Hey guys,
Just put new front wheel bearings, drilled, sloted rotors, pads all 4 wheels, broke in the brakes as directions said, my brakes are still pulsating like the rotors are warped, What the hell? any ideas?
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post #2 of 9 Old 03-24-2012, 05:53 PM
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I once purchased a really nice set of big brake rotors for a car I used to have and they were warped right out of the box. Wasn't very happy about it, but had them shaved and they were fine after.

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post #3 of 9 Old 03-24-2012, 05:54 PM
spool up that turbo!!


 
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Calipers maybe?


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post #4 of 9 Old 03-24-2012, 09:36 PM
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I have pulsating breaks. I think it is coming from the left front wheel. I first replaced the slide pins as they were rusted in place. Then I checked the slide pins and replaced them as nessecary on all four wheels. Next I replaced the left front rotor. I still have the pulstion problem. My next move is going to be replacing the left front caliper. I think one of the dual pistons may be siezed up.

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post #5 of 9 Old 03-25-2012, 11:09 AM
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I have a 2001 7.3 and it did the same thing it isn't very likely that it is the back braes but it is possible. I replaced my front rotors calipers and brake pads and have had no problems since I would try getting ur rotors shaved first. They will be able to tell you if they were worped and if it isn't too bad they can be fixed

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post #6 of 9 Old 03-25-2012, 11:36 AM
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Do you feel it in the steering wheel or in your seat? That will give u an idea of front or rear.
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post #7 of 9 Old 03-25-2012, 01:15 PM
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I would put a dial indicator on a rotor and check the run out.

Do this by removing the tire (jack it up of course) then run 1 or 2 lug nuts back on to hold the rotor square to the hub. Next position the indicator so it doesnt go over any of the slots or holes.
Then spin it and watch how much runout there is. I believe .003 is the max allowed but it has been a few yrs since i have done this.

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post #8 of 9 Old 03-25-2012, 04:38 PM
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Check the new rotors and bleed your calipers might have air in the line.


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post #9 of 9 Old 03-26-2012, 07:43 PM Thread Starter
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Hey guys,
Ya before I did the brakes my front rotors were warped a little, but after the new ones all 4, now it's in the back, It pulsates bad, I can feel it in the seat and the pedal. if I am coming off the freeway it really shakes bad, but not it the steering wheel at all. It has to be the new rotors, there is just nothing else that would feel like that. Power Stop will have to send me all new rotors, and then we will see. This sucks but leave it up to me to get the bad rotors out of all the ones that are delivered.
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