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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 -> Component Replacement & Adjustment -> Precautions -> Air Bag System Disarming & Arming -> Battery Ground Cable -> Product Compatibility
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Prior to performing any service operations listed, consult for related information.
Air Bag System Disarming & Arming
Refer to and for air bag system disarming and arming procedures.
Battery Ground Cable
Prior ...
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BRAKE SERVICE PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Anti-lock Brakes -> Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Connector Terminal Identification -> Diagnostic Trouble Code Interpretation -> Wiring Diagrams
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Accessing Diagnostic Trouble Codes
Diagnosis is only available using the BMW Diagnostic System. Refer to BMW testing system manufacturer's instructions to diagnosis ABS malfunctions.
Diagnostic Trouble Code Interpretation
Refer to Fig. for Diagnostic Trouble Code (DT...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
BMW -> Fuel Filter Replacement -> Except X3 & Z4 -> Fuel System Pressure Relief -> Models w/Fitting Or Union Bolt Connection -> Models w/Fuel Hose Connection -> Removal & Installation
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
Fuel System Pressure Relief
- Obtain the vehicle owner's radio theft protection code.
- Remove the fuel pump relay(s).
- Start the engine and allow it to stall.
- Crank engine for 10 seconds to ensure the fuel pressure has been...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
- Remove exhaust system and heat shields.
- Disconnect cable from crossmember,
- Support transmission with suitable jack.
- Remove mounting bolts and crossmember.
- Remove transmission joint disk mounting nuts.
- Remove differential final drive flange constant-velocity joint mounting nuts.
- Disconnect constant-velocity joint by pressing off input flange with suitable screwdriver.
- Remove center bearing mounting bolts. Do not allow propeller shaft to fall into joints.
- Bend propeller shaft downward at center mount and disconnect from transmission output flange and remove constant-velocity jo...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Reset Procedures -> Less iDrive -> With iDrive
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
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 illuminate...
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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 -> Check Engine Lamp -> With OBD II
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
The Check Engine lamp will be illuminated when the ignition switch is in the On position and the engine is stopped. If the engine is started, the lamp should go out. If the lamp rem...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 BMW 740IL AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1998 BMW 740IL 4.4 V8 GAS
Lower
- Drain coolant into a suitable container.
- Reposition hose clamp at radiator and remove hose.
- Reposition hose clamp at water inlet and remove hose.
- Remove hose from vehicle.
- Reverse procedure t...
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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+.
 CKP/RPM Sensor Diagram for 1998 BMW 740IL 4.4 V8 GASComponents on diagram: |
 Air Injection Pump 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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