1983 Mercury Grand Marquis Service and Repair Manual
The 1983 Mercury Grand Marquis 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
- Base Sedan 4-Door
- Colony Park Wagon 4-Door
- LS Sedan 2-Door
- LS Sedan 4-Door
Engines covered
- 5.0L 302Cu. In. V8 GAS OHV Naturally Aspirated
- 5.8L 5753CC 351Cu. 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
THE SHIFT INDICATOR MAY NOT ACCURATELY REFLECT THE SHIFT SELECTOR POSITION. SOME VEHICLES WERE PRODUCED WITH TRANSMISSION CONTROL SELECTOR TUBE RETAINING CLIPS THAT MAY NOT BE HARD ENOUGH. THE CLIP MA
THE DEALER WILL REPLACE THE TRANSMISSION CONTROL SELECTOR TUBE RETAINING CLIP AT NO CHARGE TO OWNER.
THE PARKING GEAR MAY NOT ENGAGE, EVEN THOUGH THE GEAR SHIFT LEVER IS PLACED IN THE "PARK" POSITION. THIS OCCURS IF THE LINKAGE INSIDE THE TRANSMISSION THAT ACTUATES THE PARK GEAR WAS IMPROPERLY MANUFA
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE PARKING PAWL ACTUATING ROD ASSEMBLY.
INFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC
SUBJECT REGARDING CONTAMINATION FROM PRIOR TRANSMISSION CONCERNS OR EXCESS WEAR MAY BE TRAPPED IN THE TRANSMISSION FLUID COOLING SYSTEM. *TT
FORD MOTOR COMPANY HAS RELEASED A NEW ELECTRICAL GREASE ( F8AZ - 19G208-AA ) TO REDUCE THE POSSIBILITY OF MOISTURE CORROSION AT THE TERMINALS. *YC
INFORMATION ON A NEW TRANSMISSION FLUID USAGE CHART. *YC
FLUID- TRANSMISSION FLUID USAGE CHARTS. *JD
UNKNOWN
ROUGHNESS CONCERN DURING BRAKE APPLICATION. *TW
VEHICLE FIRE STARTED UNDER THE HOOD DUE TO A FUEL LEAK, FIRE CONSUMED (3) OTHER CARS AS WELL. P
TL* THE CONTACT OWNS A 1983 MERCURY GRAND MARQUIS. WHILE THE VEHICLE WAS STATIONARY, THE AIR CONDITIONER EMITTED A POWDERY SUBSTANCE. WORLDWIDE FORD IN PENSACOLA, FLORIDA WAS MADE AWARE OF THE FAILURE
TL* THE CONTACT OWNS A 1983 MERCURY GRAND MARQUIS. WHILE THE VEHICLE WAS STATIONARY, THE AIR CONDITIONER EMITTED A POWDERY SUBSTANCE. WORLDWIDE FORD IN PENSACOLA, FLORIDA WAS MADE AWARE OF THE FAILURE
TL* THE CONTACT OWNS A 1983 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHILE DRIVING AT 65 MPH, THE GEAR LEVER NEEDED TO BE SHIFTED INTO NEUTRAL IN ORDER FOR THE OVERDRIVE TO ACTIVATE. IN ADDITION
THE ENGINE DIES WHENEVER IT GETS HOT (NOT OVERHEAT), WHEN IT COOLS DOWN IT STARTS. DURING WARM MONTHS APRIL-SEPT. THIS PROBLEM OCCURS ON A DAILY BASIS. IN THE WINTER, IT HAPPENS IF THE CAR SITS AT I
Showing the 5 most serious of 14 complaints filed with NHTSA.
