No, I didn't do anything to the brakes before this brake problem had occured! I was on my way to a local car show and the brake pedal suddenly got hard. I got back home and then I found that the 30 amp fuse was blown. I replaced it then, the fuse didn't blow anymore! However, after I had depresurized the Powermaster, I checked the time it took for the motor to cycle and turn itself off. It took up to 20 seconds! Then I replaced the accumulator with a new GM one! The time now is about 12-13 seconds to initially pump up the accumlator before the motor shuts off. I found no leaks anywhere-but from the first moment that I had replaced the 30 amp fuse, whenever I first started cycling the motor, I discovered that the brake pedal wanted to go to the floor(Not by itself-but only whenever I depressed the brake pedal during the cycling of the Powermaster motor)? The grey GM switch on my TR , was new from GM whenever I had replaced it approximately 200-300 miles back! I also replaced the Powermaster motor at that time, with a new one from Hank Terry! Lastly, I removed and replaced the check valve in the master cylinder-but, this didn't change anything either(Unless it helped the motor to cycle for 12-13 seconds(Along with the new GM accumulator?)? I can't envision in my mind, how the brake pedal can so easily be pushed to the floor during brake cycling, whenever my car always had a firm pedal(Before the 30 amp fuse blew!)and there were no ill brake symptoms at all? The brake fluid is also clean as I had replaced it in the reservoirs at the time that I had replaced the switch, motor, and the accumulator! My TR only has 46,000 miles on it!
Could the motor itself be somehow leaking back or something, causing the soft brake pedal-or, would you suggest that there is something else causing my brake problem? Since I have replaced the accumulator, the switch, and the Powermaster motor not too long ago, where should I look next, for this problem or, what do you think needs to be fixed to help solve this issue? Your help will be appreciated!
