Hi group, my 1985 GL has presented me with a scary problem. I use an indie
mechanic who really does not know the cause nor the solution. Problem: brake pedal goes straight down to floorboard without warning. We switched-out master cylinder 3 times; problem was less frequent but not solved. The last quest was
to clean and reinstall the small plastic piece that chumsup to brake booster unit. That helped alot and last winter/fall/spring operation was ok. The first
really hot day this summer revisited the problem and I was lucky not to have had an accident. The problem is continuing in this +-90 degree weather and I am
reluctant to drive my revered 240. Anyone had this same problem? Thanks in advance for any help you can offer, cheers, Damon