RADS
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Freshman User
Joined: Aug 2012
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From: Palo Iowa
RADS
the RABS on my 1992 f350 will not let the rear brakes work at all. So the brakes work very poorly, Was working find and just stopped working. How do I test to find out if the RABS module is bad.
Post Fiend
Joined: Nov 2005
Posts: 7,437
Likes: 4
From: Charles Town, W bygod Va
Have someone hold the pedal down while you loosen the line going into the RABS valve. It should leak fluid out and the pedal should drop. Tighten it back up then do the same with the line coming out. It should do the same thing. If not the RABS is in fact causing your rear brakes to not work. You can bypass the RABS valve if it is bad. The system never was all that good.
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