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1990 BMW 525I 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1990 BMW 525I 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 525I automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1990 BMW 525I AUTOMOBILES
A/C & Cooling System Maintenance -> BMW
Vehicle: 1990 BMW 525I 2.5 L6 GAS
Inspection Interval Is Determined By Service Inspection Indicator.
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BRAKE SERVICE PROCEDURES FOR 1990 BMW 525I AUTOMOBILES
Disc Brakes -> FRONT DISC BRAKE PADS REPLACEMENT -> 318 & 325 -> EXCEPT 318 & 325
Vehicle: 1990 BMW 525I 2.5 L6 GAS
318 & 325
- Raise and support vehicle, then remove front wheels.
- Remove brake pad wear indicator connector from left side of caliper.
- Remove anti-rattle clip, then the caliper sliding bolt plastic caps.
- Lift brake hose out of holder, then remove caliper sliding bolts.
- Remove caliper toward rear. Remove brake pads, then suspend caliper from frame with wire.
- Reverse procedure to install, noting the following:
- Compress caliper piston into bore.
- Check fluid ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 BMW 525I AUTOMOBILES
BMW -> Fuel Shutoff Switch Location -> 1989-90 5 Series
Vehicle: 1990 BMW 525I 2.5 L6 GAS
The inertia switch is lo...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 BMW 525I AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1990 BMW 525I 2.5 L6 GAS
The propeller shaft is adapted to pertinent requirements in reverence to the transmission version, power flow and vibration behavior, so that removal and installation will differ and depend on the version. Only tighten nuts or bolts on the flange end whenever possible to avoid tension in the joint disc.
- Raise and support vehicle.
- Remove exhaust assembly.
- Unscrew heat shield.
- On models with front joint disc, unscrew propeller shaft on transmission.
- On models with front universal Joint, support transmission with special tools 24 0 120 and 00 2 020.
- Unscrew transmission suspension...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 BMW 525I AUTOMOBILES
Alternator, Replace
Vehicle: 1990 BMW 525I 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 525I AUTOMOBILES
BMW -> Automatic Transmission Indicator Lamp ->
Vehicle: 1990 BMW 525I 2.5 L6 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 1990 BMW 525I AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1990 BMW 525I 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 525I AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 BMW 525I 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 525I AUTOMOBILES
Component location diagrams for most 1990 BMW 525I cars and light trucks sold in the U.S. from 1990+.
 Engine Harness Splice Locations Diagram for 1990 BMW 525I 2.5 L6 GASComponents on diagram: |
 Inside Of Steering Wheel Diagram for 1990 BMW 525I 2.5 L6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 BMW 525I AUTOMOBILES
OEM drawn wiring diagrams for most 1990 BMW 525I cars and light trucks sold in the U.S.
 1990 BMW 525I 2.5 L6 GAS Wiring DiagramComponents on diagram: |
 1990 BMW 525I 2.5 L6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 BMW 525I AUTOMOBILES
OEM TSB listings for most 1990 BMW 525I cars and light trucks sold in the U.S. from 1985+.
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Document: Tools and Equipment Vehicle: 1990 BMW 525I 2.5 L6 GAS Auto Systems: |
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Document: Turbocharger Installation Tool Vehicle: 1990 BMW 525I 2.5 L6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 BMW 525I AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 BMW 525I 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 525I 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 525I 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 525I 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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