1986 Mercury Cougar Service and Repair Manual
The 1986 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
- Base Sedan 2-Door
- LS Sedan 2-Door
- XR-7 Sedan 2-Door
Engines covered
- 2.3L 140Cu. In. l4 GAS SOHC Turbocharged
- 3.8L 232Cu. In. V6 GAS OHV Naturally Aspirated
- 5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated
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
HEADLAMP COVERS WERE INSTALLED ON VEHICLES IN ERROR. CAUSING THE CARS NOT TO COMPLY WITH FMVSS 108, LAMPS, REFLECTIVE DEVICES AND ASSOCIATED EQUIPMENT.
REMOVE HEADLAMP COVERS.
SPRING LOCK FUEL LINE COUPLING MAY NOT BE PROPERLY ENGAGED.
COUPLING COULD DISENGAGE DUE TO FUEL PRESSURE,VIBRATION, AND ENGINE MOVEMENTS; THIS WOULD CAUSE LOSS
INSTALL RETAINER CLIPS OVER THE COUPLINGS TO PREVENT COUPLING SEPARATION AND FUEL LEAKAGE.
SOME VEHICLES MAY EXHIBIT HEATER CORE LEAKS. *SLC
INFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC
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
A NEW SILICONE GASKET AND SEALANT. *YC
INFORMATION ON TIRE COMPANY TELEPHONE NUMBERS FOR CUSTOMER ASSISTANCE. *YC
Showing the 8 most recent of 19 technical service bulletins on file with NHTSA.
THE VEHICLE CAUGHT ON FIRE FROM THE IGNITION AREA WHILE DRIVING. PLEASE DESCRIBE. *AK
VEHICLE DOES NOT CONTAIN SAFETY GLASS ON SIDE WINDOWS, VEHICLE COLLISION RESULTING IN CUTS TO FACE DUE TO GLASS.
HEAD GASKET ON 3.8 ENGINE HAS BLOWN TWO TIMES IN 8 MONTHS. CAR OVERHEATS AND HAS OIL IN RADIATOR. HEATER DOES NOT WORK. AND VERY DIM LIGHTING ON SPEEDOMETER.*AK
HEAD GASKET ON 3.8 ENGINE HAS BLOWN TWO TIMES IN 8 MONTHS. CAR OVERHEATS AND HAS OIL IN RADIATOR. HEATER DOES NOT WORK. AND VERY DIM LIGHTING ON SPEEDOMETER.*AK
Showing the 4 most serious of 20 complaints filed with NHTSA.
