Mechanics

LINCOLN MARK VII ABS PROBLEM

1988 Lincoln Mark VII • 100,000 miles

Its a hydro-boost abs system that the accumulator is longer pressurised. How to pressurise it again. Help please
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Guest
January 9, 2013.




I answered this already, you cannot re charge. It is the job of the power steering pump if it is hydraulic. If not, it is electrical from a motor on the side. Either way, you cannot do it, the system does it. If it has failed, it needs to be replaced

Roy
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ABS accum. Has to be charged by pump motor, through pressure switch. Brown. Anti-lock relay on firewall could be the reason abs/red brake lights are coming on causing hard pedal. Test voltage to relay, pump, pressure switch; etc. If you can jump tan wire/yellow stripe to dk. Brn gray wire / red stripe(wire pin #3-4 in brn. Relay) the pump motor should run. Pressure switch reaches a calibrated level of pressure that allows accumulator to work every 3-5 brake pedal presses. Many times hard pedal w/ abs-red brake panel lights on indicate accum. Not holding high enough pressure or quite possibly brakes need to be bled to remove air. Check elec. First for 12v. Brake lines/system for air leaks. Even wheel/brake sensors.

Tiny
Bozco1
May 11, 2013.

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