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2004 Mercury Grand Marquis CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Mercury REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2004 Mercury Grand Marquis car and truck repair procedures including Mercury engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your Mercury Grand Marquis automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Mercury mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 2004 Mercury Grand Marquis vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES

Automatic Temperature Control Systems Diagnosis & Testing -> Crown Victoria, Grand Marquis & Marauder -> Precautions -> Air Bag System Disarming & Arming -> Battery Ground Cable -> Electrostatic Discharge
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS

Air Bag System Disarming & Arming

Refer to and for air bag system disarming and arming procedures.

Battery Ground Cable

Prior to service, disconnect battery ground...

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BRAKE SERVICE PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES

Anti-Lock Brakes -> Crown Victoria, Grand Marquis, Marauder & Town Car -> Diagnosis & Testing -> 2004 -> 2005-07 -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Crown Victoria & Grand Marquis -> Diagnostic Trouble Code Interpretation -> Pinpoint Tests -> Town Car
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS

Accessing Diagnostic Trouble Codes

The anti-lock brake/traction assist electronic control module is capable of performing a self-test using a suitably programmed scan tool.

The anti-lock control module monitors system operation and stores all defined diagnostic trouble codes in its memory. It is important to understand the control module cannot recognize some failures. Therefore, if a problem exists and no diagnostic trouble codes are stored by the control module, other diagnostic steps must be followed. The module cannot store a diagnostic trouble code if there is no power to...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES

Ford Motor Co. Passenger Cars -> Fuel Filter Scheduled Maintenance -> 1999-06 Crown Victoria, Grand Marquis & Marauder -> Normal Service -> Severe Service
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS

Normal S...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Mercury Grand Marquis AUTOMOBILES

DRIVESHAFT U-JOINT, Replace -> Aluminum Driveshaft -> Steel driveshaft
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS

Steel driveshaft

Do not clamp driveshaft in the jaws of a vise or a similar holding fixture. Carefully place driveshaft on a suitable workbench.

Index-mark driveshaft components relative to driveshaft tube. Make sure all components are reassembled in the same relationship to maintain correct balance. Index-mark driveshaft and driveshaft components.

  • Remove snap rings from universal joint.
  • Using press plates, position driveshaft so universal joint spider supports flange yoke or slip joint yoke.
  • The bearing cup cannot be driven all the way out. Rotate driveshaft when univers...

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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 -> Check Engine Lamp/Malfunction Indicator Lamp (MIL)/Service Engine Soon Lamp -> 1998-2006 Models -> Keep Alive Memory (KAM) Reset & PCM Reset Less Electronic Tester -> PCM Reset Using Generic Scan Tool
Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS

This lamp should light when the ignition is turned On. After engine starts, the lamp should go off, unless a fault condition is detected by the EEC-V system. If the lamp remains On or starts to blink, a diagnostic trouble code is stored in the PCM. Following diagnosis and repair, the Check Engine/MIL lamp will automatically reset when stored diagnostic trouble codes are cleared from PCM memory. The PCM reset procedure allows the scan tool to command the PCM to clear all diagnostic trouble codes.

A temporary fault such as running out of fuel, poor quality or water in fuel or loos...

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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+.

HVAC Components Diagram for 2004 Mercury Grand Marquis  4.6 V8 GASHVAC Components Diagram for 2004 Mercury Grand Marquis 4.6 V8 GAS

Components on diagram:
  • A/C Compressor
  • A/C Evaporator Core
  • A/C Condenser Core
  • Suction Accumulator
  • Engine Compartment Diagram for 2004 Mercury Grand Marquis  4.6 V8 GASEngine Compartment Diagram for 2004 Mercury Grand Marquis 4.6 V8 GAS

    Components on diagram:
  • Brake Fluid Level Switch
  • Mass Air Flow Sensor
  • Windshield Wiper Motor
  • Windshield Washer Pump Motor
  • Powertrain Control Module
  • CLICK HERE TO GET FULL ACCESS TO 2004 Mercury Grand Marquis PARTS/COMPONENTS LOCATION DIAGRAMS!

    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.

    2004 Mercury Grand Marquis  4.6 V8 GAS Wiring Diagram2004 Mercury Grand Marquis 4.6 V8 GAS Wiring Diagram

    Components on diagram:
  • Powertrain Control Module
  • Powertrain Control Module Relay
  • 2004 Mercury Grand Marquis  4.6 V8 GAS Wiring Diagram2004 Mercury Grand Marquis 4.6 V8 GAS Wiring Diagram

    Components on diagram:
  • Brake Shift Interlock
  • CLICK HERE TO GET FULL ACCESS TO 2004 Mercury Grand Marquis WIRING DIAGRAMS!

    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:
  • Heating, A/C, Ventilation, Defogger
  • Document: RECALL - 1992-2004 MULTIPLE VEHICLE LINES - SPEED CONTROL SYSTEM MODIFICATION
    Vehicle: 2004 Mercury Grand Marquis 4.6 V8 GAS

    CLICK HERE TO GET FULL ACCESS TO 2004 Mercury Grand Marquis TECHNICAL SERVICE BULLETINS!

    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

    CLICK HERE TO GET FULL ACCESS TO 2004 Mercury Grand Marquis SPECIFICATIONS DATA!

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