Have an 04 4.6 with 185000 on it, every once and a while,usually on the first drive of the day, the abs kicks on when braking about 5mph to a stop. The pedal physically pulses along with the noise. Happens every time you brake. After the drive, I shut it off, run in a store, come back out and it doesnt do it again. Any ideas?

 

I can't tell you exactly where they are, but pull the front wheels and clean the ABS sensors with some brake cleaner.

 

Sounds good, I've got some tech schematics, I'll look that up. I replaced the brakes right after I got the truck, about 3000 miles ago, but form what I can tell it was doing it before that

 

remove the rear speed sensor or remove the diff cover and inspect tone ring make sure you look at the whole thing its probible missing a tooth or bent due to spider gear failure have seen a few lately

 

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