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1998 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 1998 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 1998 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 1998 Mercury Grand Marquis AUTOMOBILES

Component Replacement & Adjustment -> Passenger Cars -> Blower Motor, Replace -> Continental -> Contour & Mystique -> Cougar -> Crown Victoria, Grand Marquis & Town Car -> Escort & Tracer -> Focus -> LS -> Mark VIII -> Mustang -> Sable & Taurus
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

Continental
  • Remove instrument panel push pins, pull panel partially down, disconnect courtesy lamp and remove panel.
  • Remove passenger side scuff plate.
  • Remove instrument panel upper finish panel and disconnect A/C sunload sensor connector.
  • Remove screws retaining righthand and center instrument panel to dash panel.
  • Remove righthand instrument panel to cowl retaining nut.
  • Disconnect harness connector.
  • Remove blower motor mounting screws, then the blower motor.
  • Reverse procedure to install.
Contour & Mystique
  • ...

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BRAKE SERVICE PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

Hydraulic Brake Systems -> Brake System Bleed -> System Priming -> Wheel Bleeding Sequence
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

Pressure bleeding is recommended for all hydraulic brake systems. Ensure all dirt and contaminants are removed from master cylinder area prior to removing reservoir cap.

To prevent air from the pressure tank getting into the lines, do not shake the tank while air is being added to the tank or after it has been pressurized. Set the tank in the required location, bring the air hose to the tank, and do not move it during the bleeding operation. The tank should be kept at least one-third full.

On vehicles equipped with disc brakes and master cylinders without proportioners or press...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

Ford Motor Co. Passenger Cars -> Fuel Filter Scheduled Maintenance -> 1983-98 Crown Victoria, Grand Marquis & Marauder -> Normal Service -> Severe Service
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

Normal Se...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

Disassemble

Do not clamp driveshaft in jaws of a vice or a similar holding fixture.

  • Place driveshaft on a suitable workbench.
  • Mark positions of driveshaft components relative to driveshaft tube. This ensures all components are reassembled in same relationship to maintain correct balance.
  • Index driveshaft and driveshaft components.
  • Clamp U-Joint Tool in a vise.
  • Remove snap rings.
  • If bearing cup cannot be pressed all way out, remove it with vise grips.
  • Remove driveshaft slip-yoke.
  • Position driveshaft in U-Joint Tool.
  • Press out a bearing cup.
  • Rotate driveshaft 180 degrees.
  • Press on...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

Starter, Replace
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

  • Disconnect battery ground cable.
  • Raise and support vehicle.
  • Remove starter shield, if required.
  • Disconnect starter cable and push on connector. When disconnecting hardshell connector at S-terminal, grasp plastic shell and pull off. Do not pull on wire. Be careful to pull straight off to prevent damage to connector and S-terminal. If any part of connect...

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MAINTENANCE LAMP RESET PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

Ford Motor Co. Cars -> Air Bag Warning Lamp ->
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the Air B...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

Lower

  • Drain cooling system into a suitable container.
  • Reposition hose clamp from water pump connection.
  • Remove radiator outlet hose from water pump connection.
  • Reposition hose clamp from radiator.
  • Remove radiator outlet hose from radiator and from vehicle.
  • Reverse procedu...

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SERPENTINE BELT SERVICE PROCEDURES FOR 1998 Mercury Grand Marquis AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 1998 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 1998 Mercury Grand Marquis AUTOMOBILES

Component location diagrams for most 1998 Mercury Grand Marquis cars and light trucks sold in the U.S. from 1990+.

Instrument Panel Components Diagram for 1998 Mercury Grand Marquis  4.6 V8 GASInstrument Panel Components Diagram for 1998 Mercury Grand Marquis 4.6 V8 GAS

Components on diagram:
  • Sun Load Sensor
  • Glove Box Lamp
  • Ignition Switch
  • Instrument Cluster
  • I/P Cigar Lighter
  • Body Components Diagram for 1998 Mercury Grand Marquis  4.6 V8 GASBody Components Diagram for 1998 Mercury Grand Marquis 4.6 V8 GAS

    Components on diagram:
  • License Lamp
  • Trunk Lid Lamp
  • Rear Dome/Reading Lamp
  • Front Dome/Reading Lamp
  • Police MAP Lamp Assembly
  • CLICK HERE TO GET FULL ACCESS TO 1998 Mercury Grand Marquis PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1998 Mercury Grand Marquis AUTOMOBILES

    OEM drawn wiring diagrams for most 1998 Mercury Grand Marquis cars and light trucks sold in the U.S.

    1998 Mercury Grand Marquis  4.6 V8 GAS Wiring Diagram1998 Mercury Grand Marquis 4.6 V8 GAS Wiring Diagram

    Components on diagram:
  • Subwoofer Speaker
  • CD Changer
  • Front Control Unit
  • 1998 Mercury Grand Marquis  4.6 V8 GAS Wiring Diagram1998 Mercury Grand Marquis 4.6 V8 GAS Wiring Diagram

    Components on diagram:
  • Relay Center
  • Brake Fluid Level Switch
  • Daytime Running Lamps (DRL) Module
  • Windshield Wiper Motor
  • Ambient Temperature Sensor
  • CLICK HERE TO GET FULL ACCESS TO 1998 Mercury Grand Marquis WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1998 Mercury Grand Marquis AUTOMOBILES

    OEM TSB listings for most 1998 Mercury Grand Marquis cars and light trucks sold in the U.S. from 1985+.

    Document: CUSTOMER SATISFACTION PROGRAM - UPGRADE MODIFICATIONS FOR HIGH-SPEED REAR IMPACTS - WISCONSIN & CONNECTICUT ONLY
    Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

    Auto Systems:
  • Brakes, Power Brakes, Traction Control
  • Steering, Suspension
  • Finishes, Body Structure, Frame, Bumpers
  • Document: SAFETY RECALL - SPEED CONTROL SYSTEM MODIFICATION
    Vehicle: 1998 Mercury Grand Marquis 4.6 V8 GAS

    Auto Systems:
  • Instruments, Dash Cluster, Warning Lights, Mirrors
  • CLICK HERE TO GET FULL ACCESS TO 1998 Mercury Grand Marquis TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1998 Mercury Grand Marquis AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1998 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 1998 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 1998 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 1998 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 1998 Mercury Grand Marquis SPECIFICATIONS DATA!

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