Re: 91 Ranger anti lock problem
ABS motor may be stuck/defective or has trapped air in it. Not sure about the Ford RABS, but on some Dodges and GMs you have to bleed the system with the vehicle running in park or neutral(manual) for the motor to reset in order to bleed the brakes. Use extreme caution if doing this without a hoist, in order to prevent the person under vehicle from getting run over. It will require a second person to pump the brakes.
2009 Ranger Sport 4.0L 5 Spd 3.55:1 Bone Stock
2013 Scion FR-S 2.0L/H-4, 6spd, 4.11:1 Fast Enough Stock