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1990 BMW 325IS 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
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
A/C & Cooling System Maintenance -> BMW
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
Inspection Interval Is Determined By Service Inspection Indicator.
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BRAKE SERVICE PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
Hydraulic Brakes -> BRAKE SYSTEM BLEEDING
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
The following procedure has been revised by BMW Technical Service Bulletin No. 34 06 90 (3134).
- Connect suitable pressure bleeder to brake fluid reservoir. Maximum charging pressure is 43.5 psi.
- Attach bleeder hose and container to right rear wheel. Bleed until no bubbles appear.
- Repeat step 2 for left rear, right front and left front wheels.
- Support rear suspension at wheel carriers and lower car so rear suspension compresses to its normal loaded position (to prevent damage to output shaft jo...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
BMW -> Component Locations -> 3 Series (Including M3, Z3, M Coupe & Roadster)
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
DRIVESHAFT, Replace -> With constant velocity joint -> With slide
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
With slide
- Raise and support vehicle.
- Remove complete exhaust system.
- Remove heat shield.
- Unscrew holders for exhaust suspension.
- Remove clamp.
- On models with joint disk, unscrew joint disk on transmission.
- On models with universal joint, unscrew universal joint on transmission.
- Release threaded bushing with suitable tool by a few turns.
- Unscrew universal joint on final drive. Caution: when removing propeller shaft, mark universal joint to drive flange of rear axle. This will eliminate complaints of droning.
- On all models, unscrew center bearing.
- Kink propeller shaft downwards a...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
Alternator, Replace
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
- Read fault memory with suitable scan tool.
- Disconnect battery ground wire.
- Remove complete suction filter with air-mass sensor.
- Remove fan.
- Disconnect plug connection on suction filter housing.
- Release screws.
- Loosen hose clamp on intake manifold.
- Unclip upper section of suction-filter housing and place ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
BMW -> Anti-Lock Brake System Warning Lamp ->
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
The Anti-Lock 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. If the ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1990 BMW 325IS 2.5 L6 GAS
Lower
- Drain coolant into a suitable container.
- Reposition hose clamp and remove hose from radiator.
- Reposition hose clamp and remove hose from engine.
- Remove hose from vehicle.
- Reverse procedure to ins...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 BMW 325IS AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 BMW 325IS 2.5 L6 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 1990 BMW 325IS AUTOMOBILES
Component location diagrams for most 1990 BMW 325IS cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 1990 BMW 325IS AUTOMOBILES
OEM drawn wiring diagrams for most 1990 BMW 325IS cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 BMW 325IS AUTOMOBILES
OEM TSB listings for most 1990 BMW 325IS cars and light trucks sold in the U.S. from 1985+.
Document: Tools and Equipment Vehicle: 1990 BMW 325IS 2.5 L6 GAS Auto Systems: |
Document: Tools and Equipment Vehicle: 1990 BMW 325IS 2.5 L6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 BMW 325IS AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 BMW 325IS 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 1990 BMW 325IS 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 1990 BMW 325IS 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 1990 BMW 325IS 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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