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2003 Mercury Grand Marquis CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Mercury REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Charging Valve Locations -> Domestic Passenger Cars -> 2003-04
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Disc Brakes -> Rear Disc & Parking Brakes -> Brake Pad Service -> Continental, Cougar, Mustang, Sable & Taurus -> Contour & Mystique -> Crown Victoria, Grand Marquis, Marauder & Town Car -> Escort, Tracer & ZX2 -> Installation -> LS & Thunderbird -> Removal -> Replacement
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
On models with anti-lock brakes, the brake system power booster must be depressurized before disconnecting any hydraulic lines or fittings. Depressurize the system by pumping the brake pedal a minimum of 25 times with the ignition in the Off position.
After performing any service work, obtain a firm brake pedal before moving the vehicle.
Continental, Cougar, Mustang, Sable & Taurus
Removal
On models with air suspension, turn service switch Off before beginning repairs.
- Raise and support rear of vehicle, then remove wheel and tire assembly.
- Remove brake hose bracket to shock unit bra...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Ford Motor Co. Passenger Cars -> Fuel Filter Replacement -> Except 2002-05 Thunderbird, 2000-06 LS, 1984-87 Escort, Tracer, Tempo & Topaz 2.0L Diesel Engine & 1984-85 Continental & Mark VI 2.4L Diesel Engine
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
When installing the fuel filter, ensure the flow arrow is facing in the pro...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
- Raise and support the vehicle.
- Index-mark the driveshaft. Place a paint index-mark on the pinion flange to the driveshaft centering socket yoke.
- Remove the driveshaft-to-driveshaft pinion flange bolts.
- Place a paint index-mark on the driveshaft slip-yoke to the trans...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Starter, Replace
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
- Disconnect battery ground cable.
- Raise and support vehicle.
- Remove starter motor solenoid terminal cover and disconnect cables.
- Remove bolt, then position transmission cooler lines and bracket aside.
- Remove upper starter motor mounting bolts, lower bolt, then starter motor...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Ford Motor Co. Cars -> Anti-Lock Brake Warning Lamp ->
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
This lamp should light when the ignition is turned On. It may light for as long as 30 seconds as a bulb and system inspect. If the lamp remains lit or lights while operating the vehicle, a fault condition in the anti-lock brake system is indicated. When the lamp is lit, turn ignition Off, then start...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp from oil filter adapter.
- Remove radiator outlet hose from oil filter adapter.
- Reposition hose clamp from degas bottle.
- Remove radiator outlet hose from degas bottle.
- Reposition hose clamp from radiator.
- Remove radiator outlet hose fro...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Mercury Grand Marquis AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS
- Rotate tensioner away from belt using a breaker bar installed in 1/2 inch square hole in tensioner arm.
- Lift old belt over alternator pulley...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Mercury Grand Marquis AUTOMOBILES
Component location diagrams for most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S. from 1990+.
In Luggage Compartment Diagram for 2003 Mercury Grand Marquis 4.6 V8 GAS Components on diagram: |
Parking Brake Release Switch Components Diagram for 2003 Mercury Grand Marquis 4.6 V8 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Mercury Grand Marquis AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S.
2003 Mercury Grand Marquis 4.6 V8 GAS Wiring Diagram Components on diagram: |
2003 Mercury Grand Marquis 4.6 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Mercury Grand Marquis AUTOMOBILES
OEM TSB listings for most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S. from 1985+.
Document: WHITE FLAKES COMING FROM A/C VENTS - REVISED Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS Auto Systems: |
Document: RECALL - CERTAIN 1992-2003 MODEL YEAR CARS AND TRUCKS - FUSED JUMPER HARNESS REPLACEMENT FOR VEHICLES SERVICED WITH AN INCOMPATIBLE FUSED JUMPER HARNESS Vehicle: 2003 Mercury Grand Marquis 4.6 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Mercury Grand Marquis AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2003 Mercury Grand Marquis cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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