Lost braking pressure and wired noise when depressing pedal

El Ed

Well-known member
Apr 20, 2004
273
8
San Diego
I have 95 D1 and a few days ago as I was driving home I lost all braking...pedal pushed straight to floor. After using the handbrake and pumping like mad, brake pressure returned but off and on until I got home it would still push down to the floor!
For the last yr or so, in various off roading trips I have lost the braking pressure but it would always come back. It’s very intermittent-not consistent. Today as I was checking it out and pumping the brake pedal there is a sound like a clunk below the shifter. Are these related? brake MC going out? See video for sound
Thanks in advance.
 

El Ed

Well-known member
Apr 20, 2004
273
8
San Diego
Can’t upload video says the file does not have a valid extension. Don’t know what that means.
 

El Ed

Well-known member
Apr 20, 2004
273
8
San Diego
MC or (less likely) valves in the ABS valve block. That is assuming you've checked the wheel calipers for leaks and haven't found any.
i will be checking the calipers hopefully today. Any thoughts on the clunking. Lise under the shifter when I depress the brake pedal?