Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

Pulsing breaks

Old 08-09-2018
Thread Starter
Join Date: Aug 2018
Location: Round Lake
Posts: 1
Pulsing breaks

I have a 2000 3.0 auto 4x4 ranger which has the abs option. Sometimes it will randomly have the breaks start, well, pulsing for lack of a better term. I'm not talking the brake pedal pulsing like the abs is doing it's thing though. At low speeds the breaks will grab and then loosen without me even touching the breaks, it seems like about once maybe twice a rotation they basically pulse. They will keep doing that until I either floor the breaks with a little bit of speed or go above probably 30. Has anyone had this happen and or have a solution to it?
Old 08-09-2018
RF's Exiled Elite
Join Date: Dec 2017
Location: Kentucky
Posts: 554
First thing I would check is the ABS tone rings and wheel sensors. If the tone ring is missing teeth on one side or has a bad sensor the ABS might interpret that as one of the wheels skidding and activate the ABS pump. Im basically just spit balling here though...
Old 08-10-2018
2011Supercab's Avatar
Join Date: Jun 2018
Location: Everett, WA
Posts: 305
Sounds like brake rotors are slightly warped.
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