Brakes stay on - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 09-23-2012, 07:46 PM Thread Starter
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Brakes stay on

So on the 96, over night somehow the brake lights come on. Now I have noticed that while driving I have to lift the brake pedal up with my toes or the brakes will stay on while driving. Any ideas??


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post #2 of 11 Old 09-23-2012, 08:15 PM
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Just throwing this out. Are you having any trouble with the brakes? Like being soft at first, maybe having to pump them? Could the brake shaft seal be leaking around the shaft allowing the brake pedal to slip down?

Just some thoughts.....


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post #3 of 11 Old 09-23-2012, 08:30 PM Thread Starter
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The pedal does seem a bit soft but I did not know if it was normal or not as I have never driven another OBS.


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post #4 of 11 Old 09-23-2012, 08:35 PM
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Sounds like its time for a master. Undue the bolts holding it too the booster and separate the two. See if its leaking back into the booster as well.

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post #5 of 11 Old 09-23-2012, 08:44 PM Thread Starter
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Quote:
Originally Posted by BigFuel View Post
Sounds like its time for a master. Undue the bolts holding it too the booster and separate the two. See if its leaking back into the booster as well.
I'll check this out tomorrow and report back. Thanks.


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post #6 of 11 Old 09-23-2012, 08:54 PM
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Might just be low on brake fluid. Some thing happened to me on on my 01.
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post #7 of 11 Old 09-23-2012, 10:01 PM Thread Starter
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I will try bleeding them tomorrow and see how that does. If no success I will pull the MC and see if I can find anything. The weird thing is a searched high and low and can't find any fluid anywhere, so aside from into the power boost, where is it going?

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2001 F-250 Lariat CCSB, 4x4, ZF6 249k, 6.5" Procomp lift, 37" Toyo M/T's, 20" Fuel Hostages. PIS 160/30's, PHP Hydra, 6637, 4" exhaust, Tank mods, ISSPRO's, 08+ mirrors/tailgate/tail lights, M12000 winch.



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post #8 of 11 Old 09-24-2012, 05:28 AM
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Quote:
Originally Posted by BigFuel View Post
Sounds like its time for a master. Undue the bolts holding it too the booster and separate the two. See if its leaking back into the booster as well.
Thats what I'm thinking. Vacuum sounds like its getting weak.
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post #9 of 11 Old 09-24-2012, 05:47 AM Thread Starter
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I wasn't able to bleed the brakes before I had to take the truck to work this morning. However I did top off the fluid and the pedal seems stiffer and actually comes back up on it's own now. Now to find the leak tonight, in the dark, after a 14 hour day...


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post #10 of 11 Old 09-24-2012, 07:17 AM
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I've heard that sometimes it leaks inside the cab. Fluid runs down the inside of the firewall behind the insulation. Not saying yours is leaking there, but it might be a place to look.


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