Hard brake pedal at all times. Replaced 5 pin solenoid but, no change. on 1990 Ford Thunderbird SC

Brakes will work one time out of 100 times. Dash brake lights on all the time except that particular time when it appears to work. What seems to be the problem? The SC brake system has a reputation to be troublesome. There have been sugestions to replaced the SC brake system to a conventional booster and master cylinder. Any help in the subject will be greatly appreciated. Thanks.

by in Fayetteville, NC on December 30, 2011
1 answer 1 comment
ANSWER by on December 30, 2011
To many questions to ask in this venue. Contact me at jmgrhm30@gmail.com
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COMMENT by on January 01, 2012
I will contact you as soon as I get back home. should be no later than Monday. Thank You.