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2004 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
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- 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 2004 Mercury Grand Marquis AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Domestic Vehicles
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
Disc Brakes -> Rear Disc & Parking Brakes -> Brake System Bleed -> System Priming -> Wheel Bleeding Sequence
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
Pressure bleeding is recommended for all hydraulic disc brake systems.
Do not use brake fluid drained from the hydraulic system when bleeding the brakes. Ensure disc brake pistons are returned to their normal positions and the shoe and lining assemblies are properly seated. Before driving the vehicle, inspect the brake operation.
Do not shake the pressure bleeder tank while air is being added or after it has been pressurized. This will prevent air from the tank getting into the lines. Set the tank in the required location, then bring the air hose to the tank. Do not move the ta...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
Ford Motor Co. Passenger Cars -> Fuel Shutoff Switch Location -> 1997-06 Crown Victoria, Grand Marquis & Marauder
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
The inertia swi...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
To maintain proper drive line balance, mark driveshaft, universal joints, slip yoke and companion flange before removing shaft so it can be installed in its original position.
- Raise and support vehicle.
- Index-mark rear axle pinion flange and driveshaft centering socket yoke.
- Remove four bolts.
- The driveshaft centering socket yoke fits tightly on the rear axle pinion flange pilot. Never hammer on the driveshaft or any of its components to disconnect the yoke from the flange. Using a suitable to...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
Alternator, Replace
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
- Disconnect battery ground cable at battery.
- Remove nut and engine cover.
- Rotate accessory drive belt tensioner clockwise and position accessory drive belt aside.
- Disconnect alternator electrical connector.
- Position protective boot aside, remove nut and position alternator B+ terminal aside.
- Remove battery cable harness locator from alte...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
Ford Motor Co. Cars -> Message Center -> Crown Victoria, Grand Marquis & Town Car
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
The message center may be located to the right of the instrument cluster, or it may be a part of the cluster itself. It consists of three buttons: Select, E/M and Reset. The E/M button switches the display betw...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition heater hose inlet clamp at heater core.
- Remove heater inlet hose from heater core.
- Reposition heater core inlet hose clamp at intake manifold.
- Remove hose from intake manifold.
- Remove hose from vehicle.
- Reverse procedure to install.
Ou...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 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 2004 Mercury Grand Marquis AUTOMOBILES
Component location diagrams for most 2004 Mercury Grand Marquis cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2004 Mercury Grand Marquis AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Mercury Grand Marquis cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Mercury Grand Marquis AUTOMOBILES
OEM TSB listings for most 2004 Mercury Grand Marquis cars and light trucks sold in the U.S. from 1985+.
Document: WHITE FLAKES COMING FROM A/C VENTS - REVISED Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS Auto Systems: |
Document: RECALL - 1992-2004 MULTIPLE VEHICLE LINES - SPEED CONTROL SYSTEM MODIFICATION Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Mercury Grand Marquis AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 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 2004 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 2004 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 2004 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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