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Old 07-31-2015, 09:33 AM
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MustangII Front end problems

Have a 33 Ford with MII front end. Put new calipers, pads, and master cylinder and bled all lines. When you apply brakes, the front calipers on both sides will not release until vehicle sits for awhile and then they release and you have to pump the pedal to get pressure and they freeze again! Could it be a bad proportioning valve? Any assistance would be appreciated!!

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Old 07-31-2015, 10:13 AM
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make sure you rod going into the master is not too tight - may not be releasing all the way. Could have dirt in the line - plugging a passage back into the master or proportioning valve. Pumping to get pressure means there is air in the line.
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