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2003 Mercury Mountaineer 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 2003 Mercury Mountaineer 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 Mountaineer automobile. Try the Automotix DIY solution today!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    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 2003 Mercury Mountaineer 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 2003 Mercury Mountaineer AUTOMOBILES

    Air Bag System Precautions -> Ford Motor Co. -> Arming -> 1990-91 -> 1990-92 -> 1991-92 -> 1992-93 -> 1992-94 -> 1992-96 -> 1992-98 -> 1993 -> 1993-94 -> 1993-95 -> 1994 -> 1994-95 -> 1994-96 -> 1994-97 -> 1995 -> 1995-2004 -> 1995-96 -> 1995-98 -> 1996-97 -> 1996-99 -> 1997-2000 -> 1997-2001 -> 1997-2004 -> 1997-99 -> 1998 -> 1998-2000 -> 1998-2002 -> 1999-2000 -> 1999-2001 -> 1999-2002 -> 1999-2004 -> 2000 -> 2000-01 -> 2000-04 -> 2001-02 -> 2001-03 -> 2001-04 -> 2002-03 -> 2002-04 -> 2004 -> Aerostar & Bronco -> Aspire -> Aviator -> Blackwood, Expedition & Navigator -> Built After February 2002 -> Built Before March 2002 -> Capri -> Continental -> Contour & Mystique -> Cougar -> Crown Victoria Grand Marquis & Marauder -> Econoline -> Escape -> Escort, Tracer & ZX2 -> Excursion -> Explorer & Mountaineer -> Explorer Sport & Sport Trac -> F Series -> Focus -> Freestar & Monterey -> Light Trucks & Vans -> LS -> Mark VII -> Mark VIII -> Mustang -> Passenger Cars -> Probe -> Ranger -> Sable & Taurus -> Tempo & Topaz -> Thunderbird -> Town Car -> Villager -> Windstar
    Vehicle: 2003 Mercury Mountaineer 4.0 V6 FLEX

    Passenger Cars

    Aspire
    • Disconnect battery ground cable.
    • Wait one minute for back-up power supply to deplete stored energy.
    • Remove restraint system diagnostic tool from driver's side air bag module electrical connector.
    • Connect driver's side air bag module electrical connector.
    • Install driver's side air bag module as outlined under "Component Service."
    • Remove restraint system diagnostic tool from passenger's side air bag module electrical connector.
    • Install passenger's side air bag module as outlined under "Component Service."
    • C...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Disc Brakes -> Caliper Service -> Assemble -> Aviator -> Cleaning & Inspection -> Disassemble -> E & F Series -> E-150, E-250, E-350 & E-450 -> E-250, E-350 & E-550 -> E-450 -> E-550 -> E-Series -> Escape -> Excursion, Expedition, F-Super Duty, Motorhome & Navigator -> Excursion, F-Super Duty & Motorhome -> Expedition & Navigator -> Explorer & Mountaineer -> Explorer Sport/Sport Trac -> Explorer, Explorer Sport/Sport Trac, Mountaineer & Ranger -> F-Series -> Front -> Inspection -> Installation -> Overhaul -> Ranger -> Rear -> Removal -> Replacement -> Villager -> Villager & Windstar -> Windstar
    Vehicle: 2003 Mercury Mountaineer 4.6 V8 GAS

    Replacement

    Aviator
    Front
    • Raise and support vehicle.
    • Remove front tire and wheel assemblies.
    • Remove components in sequence, Fig. .
    • Reverse procedure to install.
    Rear

    Refer to Fig. , and remove rear brake components in sequence listed.

    E-Series
    Front
    E-150, E-250, E-350 & E-450
    • Raise and support vehicle, remove front tire and wheel assemblies.
    • Unclip speed sensor wiring from front brake hose.
    • Disconnect and plug front brake caliper hose from caliper. Discard copper sealing rings.
    • Remove two disc caliper mounting bolts, then the caliper, Fig. .
    • Reverse procedure to install, noting the following:
      • F...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Ford Motor Co. Light Trucks, SUVs & Vans -> Component Locations -> Aviator, 1991-06 Explorer & Mountaineer, 1986-06 Ford Ranger & 1986-90 Bronco II w/Fuel Injected Engine
    Vehicle: 2003 Mercury Mountaineer 4.6 V8 GAS

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble -> Single Cardan, Flange Yoke -> Single Cardan, Slip Yoke
    Vehicle: 2003 Mercury Mountaineer 4.0 V6 FLEX

    Single Cardan, Slip Yoke

    Disassemble

    Do not, under any circumstance, clamp the shaft in the jaws of a vise or similar holding fixture. Denting or localizing fracture can result, causing shaft failure during vehicle operation. Place the shaft on a suitable workbench. Do not damage the tube. If components are not marked and installed incorrectly, driveline imbalance can occur.

    • Index-mark the shaft components.
    • Remove and discard all four snap rings.
    • Clamp bearing cup removal tool No. 205-086 or equivalent in a vise.
    • If necessary, use a pair of pliers to remove a bearing cup t...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Component Replacement -> Pressure Monitor Sensor Replacement
    Vehicle: 2003 Mercury Mountaineer 4.0 V6 FLEX

    Pressure Monitor Sensor Replacement

    Use only tool no. 204-354 anytime tire pressures are measured to be sure that accurate values are obtained. Place air chuck straight on the valve stem to inflate tire. Do not cock air chuck during inflation cycle. Doing so can damage valve stem and cause air leaks. Ford recommends using a round head air chuck on tire pressure sensors; it is not recommended to use air chucks with long shanks. Doing so can cause tire pressure sensor valve stem damage and loss of tire pressure.

    • Remove wheel and tire assembly.
    • With valve stem at the 6 o'cloc...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer TIRE PRESSURE MONITORING SYSTEM PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Starter, Replace
    Vehicle: 2003 Mercury Mountaineer 4.6 V8 GAS

    • Disconnect battery ground cable.
    • Raise and support vehicle.
    • Remove starter motor electrical connectors.
    • Remove upper and lower starter motor mounting bolts, then starter motor from v...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Ford Motor Co. Trucks -> Check Gauge Warning Lamp ->
    Vehicle: 2003 Mercury Mountaineer 4.6 V8 GAS

    This indicator should light if any of the following conditions appear:

    • Engine oil pressure drops below approxi...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Heater Hose, Replace -> Bypass -> Inlet -> Outlet
    Vehicle: 2003 Mercury Mountaineer 4.0 V6 FLEX

    Inlet

    • Drain cooling system into a suitable container.
    • Reposition heater core inlet hose clamp at heater inlet tube.
    • Remove hose from heater inlet tube.
    • Reposition heater hose inlet clamp at heater core.
    • Remove heater inlet hose from heater core.
    • Remove hose from vehicle.
    • Reverse procedure to install.

    Outlet

    • Drain cooling system into a suitable container.
    • Reposition heater hose outlet clamp at heater core.
    • Disconnect heater out...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Mercury Mountaineer AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 2003 Mercury Mountaineer 4.6 V8 GAS

    • Disconnect battery ground cable from battery.
    • Rotate accessory drive belt tensioner clockwise, using a suitable...

    CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 2003 Mercury Mountaineer AUTOMOBILES

    Component location diagrams for most 2003 Mercury Mountaineer cars and light trucks sold in the U.S. from 1990+.

    Under Passenger Seat Diagram for 2003 Mercury Mountaineer  4.0 V6 FLEXUnder Passenger Seat Diagram for 2003 Mercury Mountaineer 4.0 V6 FLEX

    Components on diagram:
  • Safety Belt Buckle Switch
  • Safety Belt Buckle Pretensioner
  • Connector C-3051
  • Connector C-3058
  • Connector C-3066
  • Rear Axle Diagram for 2003 Mercury Mountaineer  4.6 V8 GASRear Axle Diagram for 2003 Mercury Mountaineer 4.6 V8 GAS

    Components on diagram:
  • Trailer Tow Connector
  • Connector C-405
  • Connector C-439
  • CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2003 Mercury Mountaineer AUTOMOBILES

    OEM drawn wiring diagrams for most 2003 Mercury Mountaineer cars and light trucks sold in the U.S.

    2003 Mercury Mountaineer  4.0 V6 FLEX Wiring Diagram2003 Mercury Mountaineer 4.0 V6 FLEX Wiring Diagram

    Components on diagram:
  • Left Headlamp
  • Radio Noise Capacitor
  • Left Fog Lamp
  • Starter Motor
  • Generator
  • 2003 Mercury Mountaineer  4.6 V8 GAS Wiring Diagram2003 Mercury Mountaineer 4.6 V8 GAS Wiring Diagram

    Components on diagram:
  • Turbine Shaft Speed Sensor
  • Digital Transmission Range (DTR) Sensor
  • Output Shaft Speed (OSS) Sensor
  • Heated Oxygen Sensor (H02S) #12
  • Heated Oxygen Sensor (H02S) #22
  • CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2003 Mercury Mountaineer AUTOMOBILES

    OEM TSB listings for most 2003 Mercury Mountaineer cars and light trucks sold in the U.S. from 1985+.

    Document: UNITIZED SEAL DIAGNOSIS - LEAK / GREASE OIL SEPARATION - AXLE BEARING SEAL 8.8 IFS, 8.8 IRS, AND 9.75 IRS AXLES - REVISED
    Vehicle: 2003 Mercury Mountaineer 4.6 V8 GAS

    Symptoms:
  • Leaks
  • Auto Systems:
  • Drive Axles, Shafts, U-Joints, CV-Joints
  • 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 Mountaineer 4.6 V8 GAS

    Auto Systems:
  • Chassis Electrical, Wiring, Fuses & Breakers, Wipers, Motors
  • CLICK HERE TO GET FULL ACCESS TO 2003 Mercury Mountaineer TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2003 Mercury Mountaineer AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Mercury Mountaineer 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 Mountaineer 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 Mountaineer 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 Mountaineer 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 2003 Mercury Mountaineer SPECIFICATIONS DATA!

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    Click here to view more details about 2003 Mercury Mountaineer Grille Assembly2003 Mercury Mountaineer Grille Assembly, With emblem provision; A high quality, OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..

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    $95.27

    Click here to view more details about 2006 Mercury Mountaineer Mirror, Passenger Side2006 Mercury Mountaineer Mirror, Passenger Side.

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    $61.87

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    $17.50

    Click here to view more details about 2002 Mercury Mountaineer V6, 4 L, 245 CID Rebuilt Engine2002 Mercury Mountaineer V6, 4 L, 245 CID Rebuilt Engine, Warranty: 7-Year/70,000 Mile, .

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    Click here to view more details2006 Mercury Mountaineer Used Wiper Motor Rear, Very Good.

    Source: Used Auto Parts Store

    $142.00

    Click here to view more details2006 Mercury Mountaineer Used Air Flow Meter/Sensor, 4.0, AUTO, RWD, Very Good.

    Source: Used Auto Parts Store

    $61.00
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