Quote Originally Posted by Chopper View Post
Ultimately, yes. ABS systems are pretty much all alike. Ours is nearly identical to a GM unit. The General says the moisture drawn into brake fluid (brake fluid attracts water) over time, tends to build up at the valves in the ABS unit, and will cause the unit to fail. Since you don't know when (or even if) the previous owner changed it out, the damage was likely well on its way before you ever got the machine ABS is almost never used in day to day driving (unless you drive like me:bwgr so the water just sits there...it's a good thing to slap the binders good and hard every so often (from say sixty or so)to get the ABS working for a few seconds, this moves that water along. Bart, that ABS pump is easy to change out... a used one shouldn't cost too much. Just had a totalled Trooper here two weeks ago...if I'd known, I'd have yanked the pump and sent it off to you. (I can't strip 'em, but in a front end total, the insurance salvage never would notice something like that....half cuts come with them in all the time....salvage doesn't place much value on them)

I was wondering the same thing every time I read a post on ABS failure, thinking if it gets some use (the ABS system) every week or two, it would be beneficial in keeping the seals, valves, pump etc. "limber".
Not a problem here in the ice covered mondo tundra...it gets a workout in the winter at least.
In the more humid months, I've seen water (I assume) floating on top of the brake fluid in the res. & removed it with a spoon that I bent the handle so it looked like an "L". Then just top it off.(note to self: don't eat cocoa krispies with that spoon)
Probably should do another flush this spring before Moab.