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Question Asked: Brakes on a 1990 F-350 4x4 7.3 diesel. I have replaced the whole

(1990 Ford F-350)
in Chilhowie, VA on February 02, 2015
Question Asked: Brakes on a 1990 F-350 4x4 7.3 diesel. I have replaced the whole system..
January 31, 2015, 03:19 PM
Meaning the back drums and front calibers, I also have replaced the booster, master cylinder, & the ABS block on the frame for the back brakes only. I used the Haynes auto manual & procedures to bleed the system properly as well as installation. I have got a good petal to start with but it will leak down if I hold it down for a short period of time so I'm totally confused on what is going on here any suggestions will be greatly appreciate.
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on February 02, 2015
ABS light on??
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on February 02, 2015
yes, that is why I started doing the brake job to begin with plus the back brakes were locking up and the drums were wore out!
on February 02, 2015
Then you need to know WHY the ABS light is on.. Scan test, don't guess!!!.. Does it have RABS only??.. I use block off plugs on the master cylinder line ports to TEST master cylinders!.. Can be made from 2 old lines crimped, soldered or brazed shut!.. That will tell if problem is master cyl or not!!!... Can also use a pinch off tool to clamp closed the rubber flex hoses for additional testing...if you are familiar with testing procedures. good luck with it!
on February 02, 2015
Thanks Pushrod I'll give this a shot and let u know if it works
on February 02, 2015
of Greg's Orange Auto on February 02, 2015
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on February 02, 2015
it was a new after market from advance auto parts, but i am thinking of buying a new one from the Ford motor co..
I have checked for any possible leaks and have found0
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How to Fix Your Brakes

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