Lost Brake Compression

[moChen]

I'm up in Nevada City CA and heading down Purdon Road I lost break compression. Turned around, and on the way back up it came back. Parked it for a day, and the pedal is hard as a rock again.
-No obvious vacuum leaks or cracks in the hoses
-No fluid leaks
-ABS fuse looks fine
-No obvious melted relays
* The plastic connection that all the ABS wiring connects to, looks like it was JB welded to the metal
post on the body at some point, but is now loose and has been rattling around for who knows how long?

I'm in a safe spot with good driveway access, so I'll probably have it AAA towed to a shop, but if anyone is local and has some Ideas/ experience/ parts that would be rad.

Thanks - Matt Chen 415-786-8957

 

[bmooreskier]

This happened to me recently. The front brake caliper was dragging, overheated and I lost all compression. Stopped to let it cool and got enough brakes back to safely limp home. Hard as a rock the next morning. Replaced the caliper and all is good

 

[BILT4ME]

You overheated your brakes and boiled your fluid and possibly to the point you melted your ABS sensors.

Don't ride your brakes.

Read the thread about how to brake down steep mountain passes.......

 

[LINUS]

Yep, core issue is you need to deal with the caliper, but betting you boiled your old fluid since its’ ability to resist boil is based on moisture in it.

Old fluid = more accumulation of moisture & brake fluid is hygroscopic, so that’s why they tell you to flush it every so often.

More moisture = boiling point reduced.