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New original eguipment Master and both calipers..brake lines are like new no kinks or the like and the hoses are in the same shape..all new right down to the bolts..when you release the brakes the drivers side retracts and releases and no drag so to say but the pass. side only releases just a tiny bit and still drags/holding causing this problem..I even switched them around jacked up not driven and even the one from the drivers side hooked up to the pass. side did the same thing..So it has nothing to do with the calipers at all !! I have bleed it with a vacum pump and the ol pump by foot method ..It does have the ABS system but I dont know how to properly,,I have bleed brakes for yrs without the new ABS sys. and never had anything like this before..I had even done work to my windstar with ABS also and didnt have this problem when I bleed the brakes on it>I repaced all the lines on it due to salt corrosion< but neverhad one not release like the F150..Something is not releasing period all the way..I can push back the caliper piston with no trouble at all...kind of a stumper???
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