erg... brakes
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Senior User
Joined: Mar 2011
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erg... brakes
ok so, I have this brake issue, I loose pressure all the way until about an inch or 2 from the floor board, master cylinder and booster were replaced, and I took it to the dealer for them to bleed it out, and nothing is making a change, the only thing that I can thin at all that it would be is the metal block that the 2 lines from the cylinder go to, and then they spilt at the bottom to go to each of the wheels, I THINK it's called the brake or ABS control module... is there a rebuild kit, cause I'm thinking it's like a 1500 dollar part.. and it's driving me nuts.. i don't no what the deal is. any idea's?
Lead Driver
Joined: Sep 2003
Posts: 5,844
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From: Albuquerque
If you don't have air in the lines...maybe you got a bad master cylinder. Stuff does happen...
Seem like the abs had issues you would know. Have you tried to LOCK the wheels up going from like 35mph to zero? See if abs is working...
Good luck...
biz
Seem like the abs had issues you would know. Have you tried to LOCK the wheels up going from like 35mph to zero? See if abs is working...
Good luck...
biz
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Abs works fine... If it does kick in though my right front will stick when I let off until I press down again then it will release... Both front calipers have been replaced... I am just completely stumped. It doesn't make since
Postmaster
Joined: Apr 2006
Posts: 3,524
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From: CA Bay Area
So the dealer took the money without doing the job right?
Several members (including me) have rear calipers the same where one is installed upside down with bleeder at the bottom. Make sure this is not your case?
Several members (including me) have rear calipers the same where one is installed upside down with bleeder at the bottom. Make sure this is not your case?
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Well... He did the brake bleed properly... So he didn't NOT finish the job... He did what he was supposed to... However it didn't fix the problem... Because I don't know what it is... And I'm pretty sure... Like 90% My rear calipers as for all four are installed properly... This issue is so irritating I'm looking for a new truck.. Still a ford, just new and with the diesel... But still. I fix everything and can't figure this one out... Something is leaking by or malfunctioning!
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Proportioning valve... Where is it and is there a rebuild kit? Or is it as simple as a few orings?
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Posting Guru
Joined: Sep 2011
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From: Mt. Holly Springs, PA
its going to be awful hard to determine specifics like that since you havent posted what vechicle this problem is on 
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Posting Guru
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From: Mt. Holly Springs, PA
well there dosnt seem to be a proportiong valve on your truck, i bet its something you have already done, was not done right, or was not a good replacement part. i dont think there is a magic answer for you here
Posting Guru
Joined: Sep 2011
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From: Mt. Holly Springs, PA
did you bench bleed the master cylinder properly... Like i was saying, its a simple system, along with the principles of hydraulics.... what is the condition of the hoses, you just need to go through the system again and nail it down
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I deal with hydraulics at work... Along with a bunch of other things... Anywho hoses are fine and cylinder was bled before I bled like 3 times and the the dealership properly bled... So I don't know