I have a 1989 Cherokee Laredo 4WD automatic 4.0L (160K miles) that I picked up recently and before I fix the body damage, I noticed the ABS hydraulic pump comes on and runs for 10 seconds, then stops for 15 seconds and then repeats. This happens with the engine running in park or drive and whether or not you are stepping on the brake pedal. I figure that this is quickly wearing out the (expensive?) Pump, so maybe I should just part the car out.
Is this normal or acceptable for the pump to be running so frequently? If not, is there an easy fix (replacing the pressure sensor switch)?
Friday, August 17th, 2007 AT 1:15 PM