1991 Jeep Cherokee brakes problems

Defect

VEHICLE DESCRIPTION: PASSENGER AND MULTI-PURPOSE VEHICLES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, ILLINOIS, INDIANA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, OR WISCONSIN, AND THE DISTRICT OF COLUMBIA. THE FRONT DISC BRAKE ROTORS CAN EXPERIENCE SEVERE CORROSION IF OPERATED FOR AN EXTENSIVE PERIOD IN THE "SALT BELT." IF THE ROTORS ARE NOT REPLACED, THE CORROSION CAN EVENTUALLY COMPROMISE THE STRUCTURAL INTEGRITY OF THE STAMPED STEEL CENTER HUB SECTION OF THE ROTOR.

Consequence

THE REDUCED STRENGTH CAN ALLOW THE CAST IRON WEAR SURFACE TO SEPARATE FROM THE HUB, REDUCING THE BRAKE EFFECTIVENESS OF THE VEHICLE.

Remedy

DEALERS WILL REPLACE THESE ROTORS WITH ROTORS THAT ARE COATED WITH A CORROSION PROTECTION.

Defect

VEHICLE DESCRIPTION: VEHICLES EQUIPPED WITH ANTILOCK BRAKE SYSTEM (ABS). THE ANTILOCK BRAKE SYSTEM (ABS) HYDRAULIC CONTROL UNIT CAN EXPERIENCE EXCESSIVE BRAKE ACTUATOR PISTON SEAL WEAR WHICH COULD CAUSE PUMP-MOTOR DETERIORATION.

Consequence

IF THIS OCCURS, THE ABS FUNCTION WOULD BE LOSE AND REDUCED POWER ASSIST WOULD BE EXPERIENCED DURING VEHICLE BRAKING. THE INSTRUMENT PANEL WARNING LIGHTS WILL SIGNAL SYSTEM IMPAIRMENT AND THE BASE MANUAL BRAKES WILL REMAIN FUNCTIONAL.

Remedy

DEALERS WILL TEST THE VEHICLE'S ABS AND REPAIR AS NECESSARY. THE WARRANTY ON ALL ABS COMPONENTS WILL BE EXTENDED TO 10 YEARS OR 100,000 MILES (EXCEPT FOR THE BRAKE ACTUATOR PISTON ASSEMBLY AND THE PUMP-MOTOR ASSEMBLY WHICH WILL HAVE A LIFETIME COVERAGE). OWNERS WILL BE REIMBURSED FOR PREVIOUS ABS COMPONENT REPAIR COSTS.

Defect

IMPROPER INSERTION/CRIMPING OF THE HOSE-TO-END FITTINGS OF THE HIGH PRESSURE HOSE ON THE ANTI-LOCK BRAKE SYSTEM CAN CAUSE DETACHMENT OF THE HOSE FROM THE ABS SYSTEM, AND DISCHARGE OF HYDRAULIC FLUID.

Consequence

DETACHMENT OF THE HOSE FROM THE ABS SYSTEM CAUSES THELOSS OF THE ABS FUNCTION AND HYDRAULIC BRAKE ASSIST, LEAVING ONLY MANUAL BRAKESAND DECREASING STOPPING ABILITY, WHICH COULD RESULT IN AN ACCIDENT. DISCHARGE OFHYDRAULIC FLUID IN THE AREA OF THE HOT EXHAUST SYSTEM COULD RESULT IN AN ENGINECOMPARTMENT FIRE.

Remedy

REPLACE THE ABS HIGH PRESSURE HOSE.

Defect

IMPROPERLY INSTALLED BRAKE FLUID TUBE MAY ALLOW THE TUBE TO CONTACT THE STEERING INTERMEDIATE SHAFT DAMAGING THE TUBE.

Consequence

BRAKE FLUID LEAKAGE COULD OCCUR AND RESULT IN PARTIALLOSS OF BRAKING CAPABILITY.

Remedy

REPOSITION BRAKE TUBE TO AVOID CONTACT WITH STEERING SHAFT; ALSO, REPLACE ANY DAMAGED BRAKE TUBES.

Defect

SUSPENSION JOUNCE BUMPER COULD CONTACT LEFT REAR WHEEL BRAKE TUBE WHEN SUSPENSION IS AT FULL JOUNCE (BOUNCE).

Consequence

CONTACT AT FULL JOUNCE MAY CAUSE THE BRAKE TUBE TOCOLLAPSE AND RESTRICT THE HYDRAULIC BRAKE FLUID PRESSURE TO THE LEFT REAR BRAKEWHICH AFFECTS THE BRAKING CAPABILITY OF THE VEHICLE.

Remedy

REPLACE LEFT REAR BRAKE TUBE WITH TUBE DESIGNED TO ELIMINATE CONTACT WITH BUMPER.