1990 Jeep Wagoneer Service and Repair Manual
1990 Jeep Wagoneer service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
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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
IF THIS OCCURS, THE ABS FUNCTION WOULD BE LOSE AND REDUCED POWER ASSIST WOULD BE EXPERIENCED DURING
DEALERS WILL TEST THE VEHICLE'S ABS AND REPAIR AS NECESSARY. THE WARRANTY ON ALL ABS COMPONENTS WIL
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.
DETACHMENT OF THE HOSE FROM THE ABS SYSTEM CAUSES THELOSS OF THE ABS FUNCTION AND HYDRAULIC BRAKE AS
REPLACE THE ABS HIGH PRESSURE HOSE.
VEHICLE DESCRIPTION: PASSENGER AND MULTI-PURPOSE VEHICLES ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, ILLINOIS, INDIANA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, NEW HAMP
THE REDUCED STRENGTH CAN ALLOW THE CAST IRON WEAR SURFACE TO SEPARATE FROM THE HUB, REDUCING THE BRA
DEALERS WILL REPLACE THESE ROTORS WITH ROTORS THAT ARE COATED WITH A CORROSION PROTECTION.
THERE MAY BE HYDRAULIC FLUID CONTAMINATION FROM CONDENSATION FORMATION THAT CAN PLUG THE ABS BRAKE BOOSTER PUMP FILTER; STRESS CORROSION OF THE MASTER CYLINDER SNAP RING HAS BEEN TRACED TO CHLORINE LE
CONTAMINATION OF THE HYDRAULIC FLUID CAN CAUSEMALFUNCTIONING OF THE ANTI-LOCK BRAKE SYSTEM; LOW PRES
REPLACE ABS LOW PRESSURE HOSE; REBUILD MASTER BRAKE CYLINDER; INSPECT, SERVICE INTERFERENCE PROBLEMS
MALFUNCTION OF FUEL INJECTION SYSTEM THROTTLE POSTITION SENSOR COULD CAUSE INTERMITTENT HIGH ENGINE IDLE SPEED IMMEDIATELY AFTER STARTING ENGINE.
HIGH ENGINE IDLE WHEN CAR IS FIRST PLACED IN GEAR COULDRESULT IN UNEXPECTED ACCELERATION.
REPLACE THROTTLE POSITION SENSORS WITH SENSORS THAT WOULD SEND CORRECT SIGNALS TO THE FUEL INJECTION
SUBJECT REGARDING WIRE SPLICE REPAIRS. *SB
SUBJECT REGARDING CHILD SEAT TETHER ANCHORS. *TT
SUBJECT ON THE CHILD SEAT TETHER ANCHORS. *MJS
SUBJECT REGARDING CHILD SEAT TETHER ANCHORS. *TT
THIS BULLETIN PROVIDES A REVISED WIRE SPLICE PROCEDURE AND RELATED PARTS. *TT
INFORMATION ON INSTALLATION OF RADIO TRANSMITTING EQUIPMENT. *AK
SUBJECT ON CUSTOMER SATISFACTION NOTIFICATION #733--BRAKE PEDAL SHIFT INTERLOCK. *YC
INFORMATION ON CHILD SEAT TETHER ANCHORS. *TT
Showing the 8 most recent of 10 technical service bulletins on file with NHTSA.
THE VEHICLE TOOK OFF, WITHOUT PEDAL APPLICATION, AFTER BEING PUT INTO DRIVE. THE VEHICLE RAN INTO A BUILDING AND WAS TOTALED. *AK
CONTINUED ANTI-LOCK AND BRAKE FAILURE WITH NO WARNING. SYSTEM REPLACED ON 2/11/97, 11/10/00, 11/16/00, & 2/13/01. REPLACED WITH SAME PARTS THAT CONTINUE TO FAIL. VERY DANGEROUS. BRAKES GO TO FLOOR
CONTINUED ANTI-LOCK AND BRAKE FAILURE WITH NO WARNING. SYSTEM REPLACED ON 2/11/97, 11/10/00, 11/16/00, & 2/13/01. REPLACED WITH SAME PARTS THAT CONTINUE TO FAIL. VERY DANGEROUS. BRAKES GO TO FLOOR
THE VEHICLE STALLED, WHICH CAUSED CONSUMER TO LOSE CONTROL OF THE VEHICLE.*JB
RIGHT FRONT BRAKE LOCKS UP CAUSING ONE MINOR AND ONE MAJOR ACCIDENT. NLM
Showing the 5 most serious of 18 complaints filed with NHTSA.
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