Brake problem
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Postmaster
Joined: Dec 2003
Posts: 2,864
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From: STEPHENVILLE,TX!!!!!
Brake problem
ok on the 2000 F350 got an issue with the brakes......
be sitting at a stop light and have your foot on the pedal (auto trans cant wait till it fails and drop a 6 speed in it) and the brakes will release and truck will move forward. i cant get it to repeat the problem with me driving it. only happens to my wife, sounds like a bad master cyl or porportioning valve? brake fluid clean no leaks anywhere. front brakes probably only have 10k on them. going to bleed down the brakes tommorow see if theres crap in the lines somewhere. has been happening with just around town driving nothing under extreme braking or heavy hauling towing.
be sitting at a stop light and have your foot on the pedal (auto trans cant wait till it fails and drop a 6 speed in it) and the brakes will release and truck will move forward. i cant get it to repeat the problem with me driving it. only happens to my wife, sounds like a bad master cyl or porportioning valve? brake fluid clean no leaks anywhere. front brakes probably only have 10k on them. going to bleed down the brakes tommorow see if theres crap in the lines somewhere. has been happening with just around town driving nothing under extreme braking or heavy hauling towing.
Elder User
Joined: Nov 2004
Posts: 798
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Jake
First thoughts are the Master Cylinder bleeding by. The pressure your wife puts on the brake peddle will naturally be different than yours. You might see if you can duplicate it by varying the pressure on the brake peddle. Just some ideas. Hope they help.
First thoughts are the Master Cylinder bleeding by. The pressure your wife puts on the brake peddle will naturally be different than yours. You might see if you can duplicate it by varying the pressure on the brake peddle. Just some ideas. Hope they help.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,111
From: Rio Rico, AZ.
I agree with touchofgrey. You can usually spot a failing master cylinder by applying the brakes and then lighten the pressure on the pedal but not fully release it. Then step down on it again. Repeat. Never fully release the pedal but step and half release, step and half release. The pedal will slowly work its way down.
