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98 Grand V-ger with intermittant soft brake pedal
I bought the van in August '08 and the brakes have been fine until recently. Now, every once in a while, in no apparent pattern and for no reason I can discern, the pedal goes almost to the floor before I get any action. Pumping once brings the pedal back to normal.
I've had it checked at a brake shop and there are no leaks anywhere or any problems they can identify - in fact, they were unable to duplicate the problem after two days of testing.
Before I commit to further work (read: parts replacement) at a shop, I though I'd see if there's anyone out there who's had similar problems and found the answer. Master brake cylinders should last for for years (the van only has 110,000 km on it) so I think there might be something else going on...