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1998 BMW 740IL CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT BMW 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!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Tire Pressure Monitoring System
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1998 BMW 740IL car and truck
repair procedures including BMW 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 BMW 740IL automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
BMW -> Manual A/C & Heater System Diagnosis & Testing -> A/C Component Diagnosis & Testing -> A/C Compressor -> Blower Motor -> Evaporator Regulation -> Heater Regulation -> Sensors -> Temperature Regulator -> Thermostatic Switch
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Thermostatic Switch
- Remove A/C temperature switch as outlined under "Component Replacement" section.
- Rotate switch to fully cold position and connect an ohmmeter to switch terminals. Meter should show continuity.
- Prepare solution of water, crushed ice, and sufficient amount of salt to reduce solution to below 20°F.
- Immerse temperature sensor of switch in ice bath while observing ohmmeter. Be careful not to get salt or water into control portion of switch.
- Ohmmeter should show no continuity while sensor is in ice bath.
- Re...
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BRAKE SERVICE PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Hydraulic Brake Systems -> Brake System Bleed
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
The following procedure has been revised by a Technical Service Bulletin.
Ensure traction control systems are turned Off prior to bleeding brake system.
- Connect suitable pressure bleeder to brake fluid reservoir. Maximum charging pressure is 43.5 psi.
- Attach bleeder hose and container to righthand rear wheel. Bleed until no bubbles appear.
- Repeat previous step for lefthand rear, righthand front and lefthand front wheels.
- Support rear suspension at wheel carriers and lower car so rear suspension compresses to its normal loaded position (to prevent ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
BMW -> Component Locations -> 7 & 8 Series
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Refer to Fig....
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
CV AXLE SHAFT, Replace -> Rear
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Rear
- Raise and support vehicle, then remove rear tire and wheel assembly.
- Remove exhaust system.
- Remove rear axle.
- Remove axle nut.
- Press halfshaft off hub using a suitable tool. Do not allow halfshaft to fall.
- On models equipped with height control, remove cont...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Wiring Diagrams -> Wire Color Code Identification
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Refer to Fig. for wiring...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Starter, Replace
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
- Raise and support vehicle.
- Remove mounting bolts and splash guards.
- Remove mounting bolts and catalytic converter heat shields.
- Disconnect righthand oxygen sensor connector from transmission clip.
- Remove nuts and disconnect start...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Cabin Air Filter Service -> BMW -> 1993-2001 7 Series
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Service interval is determined by the service indicator.
- Remove cabin air filter cover retaining screw, then open the cover.
- Depress the cabin air filter duct lock, then lift the cover upward.
- Release the cabin ai...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
BMW -> Tire Pressure Monitoring System (TPMS) Warning Indicator -> 1997-2008 7 Series -> Less iDrive -> Reset -> With iDrive
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Reset
The reset procedure needs to be performed anytime the tire pressure is adjusted or the tires are rotated.
Less iDrive
- Turn ignition switch to On with vehicle in a stationary position.
- Press the Tire Pressure Warning/RDC button, located at front console or on the instrument panel, until the indicator lamp on the instrument panel is illumin...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Inlet
- Drain coolant into a suitable container.
- Reposition hose clamp at heater core and remove hose.
- Reposition hose clamp at water outlet and remove hose.
- Remove hose from vehicle.
- Reverse procedure to i...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
- Remove fan cowl by lifting out expansion rivets on both sides.
- Secure fan pulley with suitable securing tool, or equivalent, then remove fan. Fan has lefthand handed threads.
- Loosen tensioner lock bolts, then turn tensioner with suitable wrench to receive tens...
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COMPONENT LOCATION DIAGRAMS FOR 1998 BMW 740IL AUTOMOBILES
Component location diagrams for most 1998 BMW 740IL cars and light trucks sold in the U.S. from 1990+.
 VANOS Inlet Valve Diagram for 1998 BMW 740IL 4.4 V8 GASComponents on diagram: |
 Fuel Change Over Circuit Diagram for 1998 BMW 740IL 4.4 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1998 BMW 740IL AUTOMOBILES
OEM drawn wiring diagrams for most 1998 BMW 740IL cars and light trucks sold in the U.S.
 1998 BMW 740IL 4.4 V8 GAS Wiring DiagramComponents on diagram: |
 1998 BMW 740IL 4.4 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1998 BMW 740IL AUTOMOBILES
OEM TSB listings for most 1998 BMW 740IL cars and light trucks sold in the U.S. from 1985+.
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Document: Diagnosis Feedback with ISTA Vehicle: 1998 BMW 740IL 4.4 V8 GAS Auto Systems: |
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Document: Turbocharger Installation Tool Vehicle: 1998 BMW 740IL 4.4 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1998 BMW 740IL AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1998 BMW 740IL 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 BMW 740IL 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 BMW 740IL 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 BMW 740IL 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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