The 1990 Mercury Cougar Service and Repair Manual is a practical, workshop-ready reference for maintenance, diagnostics, and repairs. Use it to troubleshoot symptoms, follow step-by-step procedures, verify specifications, and confirm wiring and connector locations before replacing parts.
Ideal for technicians and DIY owners, it supports everything from routine service to deeper mechanical and electrical work—including drivability, no-start, warning lights, overheating, brake and suspension issues, HVAC faults, and circuit testing.
Trims covered
- LS Sedan 2-Door
- XR-7 Sedan 2-Door
Engines covered
- 3.8L 232Cu. In. V6 GAS OHV Naturally Aspirated
- 3.8L 232Cu. In. V6 GAS OHV Supercharged
What’s inside
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
Why this manual matters
- Faster diagnostics with system-based troubleshooting and wiring diagrams
- Clear procedures and reference sections to reduce guesswork and rework
- Helpful for maintenance planning and verifying parts/specs before repairs
THE IGNITION SWITCH COULD EXPERIENCE AN INTERNAL SHORT CIRCUIT.
THIS CONDITION COULD CAUSE OVERHEATING, SMOKE, AND POSSIBLY FIRE IN THE STEERING COLUMN AREA OF THE
DEALERS WILL REPLACE THE IGNITION SWITCH.
BATTERY TO STARTER CABLES ARE LONGER THAN SPECIFIED; EXCESSIVE CABLE LENGTH COULD CONTACT ENGINE DAMPER PULLEY.
CABLE PROTECTIVE COVERING AND INSULATION COULD WEAR THROUGH AND CAUSE A DIRECT SHORT TO GROUND, RESU
REPLACE BATTERY TO STARTER CABLE WITH CORRECT LENGTH CABLE.
THE NUTS WHICH HOLD WINDSHIELD WIPER MOTOR TO THE WIPER MODULE MAY NOT HAVE BEEN SUFFICIENTLY TIGHTENED AND MAY LOOSEN OR COME OFF. THIS CAUSES CHANGED WIPER PATTERNS, OR THE WIPERS MAY JAM IF TWO OF
CHANGES IN THE WIPER PATTERN OR JAMMING OF THE WIPERSWOULD RESULT IN REDUCED DRIVER VISIBILTY IN INC
APPLY TORQUE RETENTION MATERIAL TO WIPER MOTOR STUDS AND NUTS AND RETORQUE.
SOME VEHICLES MAY EXHIBIT HEATER CORE LEAKS. *SLC
INFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC
SUBJECT REGARDING CLIMATE CONTROL - EATC - BLOWER MOTOR CONTROL SERVICE TIPS. *JB
SUBJECT REGARDING CONTAMINATION FROM PRIOR TRANSMISSION CONCERNS OR EXCESS WEAR MAY BE TRAPPED IN THE TRANSMISSION FLUID COOLING SYSTEM. *TT
INFORMATION ON THE NEW FLUSH AND FILL TOOL AVAILABLE THROUGH ROTUNDA. *TT
INFORMATION REGARDING THE NEW TRANSMISSION COOLER FLUSHER- SERVICE TIP. *MJS
INFORMATION ON IDENTIFYING NON-APPROVED / ALTERNATE REFRIGERANTS WHICH COULD CAUSE SAFETY, AND PERFORMANCE CONCERNS IF INSTALLED IN FORD A/C SYSTEMS. *TT
SUBJECT ON A WIRE HARNESS TERMINAL REPAIR KIT AVAILABLE FOR REPAIRING ELECTRICAL WIRING HARNESSES. *TT
Showing the 8 most recent of 33 technical service bulletins on file with NHTSA.
THE CONSUMER PRESSED ON THE ACCELERATOR AND ACCELERATED WAY TOO FAST AND HE BOLTED FORWARD STRIKING A CONCRETE BARRIER. *DT CONSUMER SENT ADDITIONAL LETTER REGARDING RESULTS FROM INCIDENT. *TGW 04/06/
DRIVER ENTERED VEHICLE, PUT ON LAP/SHOULDER BELT, PUT VEHICLE IN DRIVE POSITION, SUDDENLY VEHICLE ACCELERATED AND TOOK OFF, TRIED TO APPLY BRAKES, WHICH DID NOT WORK, DRIVER STEERED VEHICLE TOWARDS A
DRIVER ENTERED VEHICLE, PUT ON LAP/SHOULDER BELT, PUT VEHICLE IN DRIVE POSITION, SUDDENLY VEHICLE ACCELERATED AND TOOK OFF, TRIED TO APPLY BRAKES, WHICH DID NOT WORK, DRIVER STEERED VEHICLE TOWARDS A
DRIVER ENTERED VEHICLE, PUT ON LAP/SHOULDER BELT, PUT VEHICLE IN DRIVE POSITION, SUDDENLY VEHICLE ACCELERATED AND TOOK OFF, TRIED TO APPLY BRAKES, WHICH DID NOT WORK, DRIVER STEERED VEHICLE TOWARDS A
THE SEAT BELTS DID NOT HOLD THE DRIVER PROPERLY IN A REAR END ACCIDENT.PLEASE DESCRIBE. TT
Showing the 5 most serious of 104 complaints filed with NHTSA.
