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1998 BMW 750IL CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT BMW REPAIR SHOPS DON'T WANT YOU TO KNOW
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- 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
A/C & HEATER SERVICE PROCEDURES FOR 1998 BMW 750IL AUTOMOBILES
Air Bag System Precautions -> BMW -> Arming
Vehicle: 1998 BMW 750IL 5.4 V12 GAS
- Ensure nobody is in vehicle, then connect battery positive cable, then ground cable.
- From a safe position to the side of or below air bag modules, turn ignition On and observe air bag indicator lamp. Lamp s...
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BRAKE SERVICE PROCEDURES FOR 1998 BMW 750IL AUTOMOBILES
Anti-lock Brakes -> System Service -> 1998 -> 1999-2000 -> 323Ci, 325, 328Ci & 330 & 2000 323i & 328i & 1999 323i & 328i Sedans -> Brake System Bleed -> Component Replacement -> Control Unit -> Front Speed Sensor -> Hydraulic Unit -> M3, Z3, 318, 323, 325, 328 & 330 -> M5, 525, 528, 530, 540, 740 & 750 -> Rear Speed Sensor -> X5 -> Z3, 318, 323is & 328is & 1998-99 M3, 328i & 1998 323i & 1999 323i & 328i Convertibles
Vehicle: 1998 BMW 750IL 5.4 V12 GAS
Brake System Bleed
Refer to "Hydraulic Brake Systems," for procedures.
Component Replacement
Hydraulic Unit
M3, Z3, 318, 323, 325, 328 & 330
Z3, 318, 323is & 328is & 1998-99 M3, 328i & 1998 323i & 1999 323i & 328i Convertibles
- Ensure ignition switch is in Off position.
- Remove Mass Air Flow (MAF) sensor from air filter housing.
- Disconnect cruise control drive motor as required.
- Remove brake fluid from master cylinder using suitable syringe.
- Disconnect central connector.
- Mark brake lines for installation alignment.
- Disconnect brake lines at master cylinder and hydraulic control unit.
- Disconnect s...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 BMW 750IL 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 750IL 5.4 V12 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 750IL AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1998 BMW 750IL 5.4 V12 GAS
- Raise and support vehicle.
- 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 c...
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TIRE PRESSURE MONITORING SYSTEM PROCEDURES FOR 1998 BMW 750IL AUTOMOBILES
Description
Vehicle: 1998 BMW 750IL 5.4 V12 GAS
The Tire Pressure Monitor System (TPMS) monitors the tire inflation pressure while the vehicle is being driven. To achieve this, the tire inflation pressure and tire air temperature are measured at certain intervals by sensors located on each wheel at t...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 BMW 750IL AUTOMOBILES
Alternator, Replace
Vehicle: 1998 BMW 750IL 5.4 V12 GAS
- Remove drive belt, fan cowl and lefthand intake air filter housing.
- Disconnect radiator hose bracket.
- Loosen hose clamp and remove cooling air hose.
- Disconnect connector.
- Remov...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 1998 BMW 750IL AUTOMOBILES
Cabin Air Filter Service -> BMW -> 1993-2001 7 Series
Vehicle: 1998 BMW 750IL 5.4 V12 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 750IL AUTOMOBILES
BMW -> Automatic Transmission Indicator Lamp ->
Vehicle: 1998 BMW 750IL 5.4 V12 GAS
The warning lamp is used to warn of a system fault. It will be lit during engine start-up, but should go out when the self-diagnostic system determines that the system is functioning properly. The warning lamp will also flash when the system ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 BMW 750IL AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1998 BMW 750IL 5.4 V12 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 750IL AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1998 BMW 750IL 5.4 V12 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 750IL AUTOMOBILES
Component location diagrams for most 1998 BMW 750IL cars and light trucks sold in the U.S. from 1990+.
In Bottom of RH Front Door Diagram for 1998 BMW 750IL 5.4 V12 GAS Components on diagram: |
Connector Strip on RH Front Sill under Carpet Diagram for 1998 BMW 750IL 5.4 V12 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1998 BMW 750IL AUTOMOBILES
OEM drawn wiring diagrams for most 1998 BMW 750IL cars and light trucks sold in the U.S.
1998 BMW 750IL 5.4 V12 GAS Wiring Diagram Components on diagram: |
1998 BMW 750IL 5.4 V12 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1998 BMW 750IL AUTOMOBILES
OEM TSB listings for most 1998 BMW 750IL cars and light trucks sold in the U.S. from 1985+.
Document: Tools and Equipment Vehicle: 1998 BMW 750IL 5.4 V12 GAS Auto Systems: |
Document: Diagnosis Feedback with ISTA Vehicle: 1998 BMW 750IL 5.4 V12 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1998 BMW 750IL AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1998 BMW 750IL 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 750IL 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 750IL 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 750IL 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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