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2003 Ford Focus CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Ford 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 Ford Focus car and truck repair procedures including Ford 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 Ford Focus 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 Ford 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 Ford Focus 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 Ford Focus AUTOMOBILES

    Compressor Service -> Compressor Clutch Service -> Clutch Field Coil, Replace -> Clutch Hub & Pulley, Replace -> FS-10, SC90V & SC105V -> Installation -> Removal -> SC115
    Vehicle: 2003 Ford Focus ZX5 2.3 L4 GAS

    Clutch Hub & Pulley, Replace

    Removal
    FS-10, SC90V & SC105V
    • Holding clutch plate with a suitable spanner wrench, Figs. and , remove clutch hub retaining nut or bolt, Figs. through .
    • On models where clutch plate is retained with a nut, remove clutch hub and shims from compressor shaft using hub remover tool No. T94P-19703-AH, or equivalent, Fig. .
    • On models where clutch plate is retained by a bolt, lift assembly and shims from compressor. If required, thread a suitable bolt into clutch plate hub to break hub free of shaft, F...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Hydraulic Brake Systems -> Component Replacement -> 1999 -> 2000-03 -> Continental, Crown Victoria, Grand Marquis, Marauder, Mustang & Town Car -> Contour, Cougar & Mystique -> Escort, Tracer & ZX2 -> Focus -> Installation -> LS & Thunderbird -> Master Cylinder -> Removal -> Sable & Taurus -> Wheel Cylinders
    Vehicle: 2003 Ford Focus ZTW 2.3 L4 GAS

    Master Cylinder

    Continental, Crown Victoria, Grand Marquis, Marauder, Mustang & Town Car
    • Depress brake pedal several times to exhaust all vacuum in system.
    • Disconnect brake lines from master cylinder, then all required electrical connectors.
    • Disconnect hydraulic control unit supply hose at master cylinder. Secure hose in a position to prevent brake fluid loss.
    • Remove two bolts which attach proportioning valve bracket to brake master cylinder. Secure proportioning valve and tubes in a position to prevent damage or loss of brake fluid.
    • Remove nuts retaining master cylinder to brak...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Ford Motor Co. Passenger Cars -> Fuel Filter Scheduled Maintenance -> Focus -> Normal Service -> Severe Service
    Vehicle: 2003 Ford Focus LX 2.0 L4 GAS

    Normal Service

    Replace every 30,000 mi...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    CV AXLE SHAFT, Replace
    Vehicle: 2003 Ford Focus SVT 2.0 L4 GAS

    • Loosen strut lock nut 5 rotations. Use Allen key to prevent piston from rotating.
    • Raise and support vehicle, then remove wheel and tire assembly.
    • Disconnect ball joint from knuckle.
    • Remove hub nut.
    • Using puller No. 204-069 and stud extension tool No. 204-085, or equivalents, Fig. , separate halfshaft from wheel hub.
    • On right side, remove intermediate shaft bearing mounting nuts.
    • On either ...

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

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Alternator, Replace
    Vehicle: 2003 Ford Focus ZTW 2.0 L4 GAS

    • Disconnect battery ground cable.
    • Remove cooling fan motor and shroud.
    • Remove drive belt.
    • Remove power steering pipe support brackets.
    • Remove exhaust manifold heat shield.
    • Raise and support vehicle.
    • Disconnect alternator electrical connectors.
    • Remo...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Cabin Air Filter Service -> Ford Motor Co. -> 2000-07 Focus
    Vehicle: 2003 Ford Focus ZX5 2.0 L4 GAS

    Under normal operating conditions the cabin air filter should be replaced every 15,000 miles. In dusty areas change the cabin air filter more often.

    • Position the windshield wipers in the vertical position.
    • Open the hood.
    • Remove the caps from the righthand side air cowl grille retaining screws.
    • Remove the righthand side air cowl grille retaining screws, then the grille.
    • Open the service flap, then remove the cabin air filter ...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Ford Motor Co. Cars -> Powertrain Malfunction Indicator ->
    Vehicle: 2003 Ford Focus ZTS 2.0 L4 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 in the powertrain system. If the lamp remains On a diagnostic trouble code is stored in the PCM. Following diagnosis and repair, the Powertrain Malfunction Indicator 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.

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Heater Hose, Replace -> Inlet -> Outlet
    Vehicle: 2003 Ford Focus SE 2.3 L4 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 engine.
    • Remove hose from engine.
    • Remove hose from vehicle.
    • Reverse procedure to in...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Ford Focus AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 2003 Ford Focus ZX5 2.3 L4 GAS

    • Ensure transmission is in Neutral position, then raise and support vehicle.
    • Remove mounting bolts...

    CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 2003 Ford Focus AUTOMOBILES

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

    Selector Lever Shift Lock Solenoid Diagram for 2003 Ford Focus SE 2.0 L4 GASSelector Lever Shift Lock Solenoid Diagram for 2003 Ford Focus SE 2.0 L4 GAS

    Components on diagram:
  • Selector Lever Shift Lock Solenoid
  • Manual Release Mechanism
  • Selector Lever Locking Pin
  • SPI Manual Transmission Components Diagram for 2003 Ford Focus ZTS 2.3 L4 GASSPI Manual Transmission Components Diagram for 2003 Ford Focus ZTS 2.3 L4 GAS

    Components on diagram:
  • Power Steering Pressure Sensor
  • Ignition Coil
  • Generator
  • Engine Coolant Temperature Sensor
  • Heated Oxygen Sensor
  • CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2003 Ford Focus AUTOMOBILES

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

    2003 Ford Focus ZTW 2.0 L4 GAS Wiring Diagram2003 Ford Focus ZTW 2.0 L4 GAS Wiring Diagram

    Components on diagram:
  • Battery
  • Starter Relay
  • Ignition Switch
  • Start Inhibit Switch
  • Starter Motor
  • 2003 Ford Focus SE 2.0 L4 GAS Wiring Diagram2003 Ford Focus SE 2.0 L4 GAS Wiring Diagram

    Components on diagram:
  • Side Air Bag Sensor, Right
  • Side Air Bag Module, Right
  • Side Air Bag Module, Left
  • CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2003 Ford Focus AUTOMOBILES

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

    Document: ENGINE VIBRATION AT IDLE - REVISED
    Vehicle: 2003 Ford Focus SE 2.0 L4 GAS

    Symptoms:
  • Vibration
  • Auto Systems:
  • Gasoline Engines
  • Document: CLUTCH PEDAL RETURN SPRING NOISE AND/OR FREE PLAY - REVISED
    Vehicle: 2003 Ford Focus SE 2.0 L4 GAS

    Symptoms:
  • Noise
  • Insufficient Performance
  • Auto Systems:
  • Manual Trans, Clutches, Linkage, MTX
  • CLICK HERE TO GET FULL ACCESS TO 2003 Ford Focus TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2003 Ford Focus AUTOMOBILES

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

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    Click here to view more details about 2002 Ford Focus Tail Light, Driver Side2002 Ford Focus Tail Light, Driver Side, Bulbs not included; DOT and SAE approved; A high quality, OE replacement tail light; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $66.49

    Click here to view more details about 2004 Ford Focus Side Marker, Front, Passenger Side2004 Ford Focus Side Marker, Front, Passenger Side, Bulbs included; DOT and SAE approved; A high quality, OE replacement side marker light assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $16.86

    Click here to view more details2007 Ford Focus Aftermarket Wheel Covers, AFTERMARKET WHEEL COVERS, 15 INCH, SILVER ABS 9 WIDE SPOKE5 LUG COVERBOLT ON APPLICATION, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $25.45

    Click here to view more details2002 Ford Focus S2 L4, 2 L, 1989 CC, 122 CID Rebuilt Engine, Z-TECH DOHC, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,820.00

    Click here to view more details2009 Ford Focus Used Engine Computer, Driver Side, ELEC CONT UNIT (ECU); (ENG FIREWALL), ID 9S4A-MA AND MB, Very Good.

    Source: Used Auto Parts Store

    $141.00

    Click here to view more details2012 Ford Focus Used Rear Spoiler Assembly, 4DR, Gray, SE Htbk, Very Good.

    Source: Used Auto Parts Store

    $216.00
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