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Lexus ES250 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Lexus REPAIR SHOPS DON'T WANT YOU TO KNOW
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| 1991 | 1990 |
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about Lexus ES250 car and truck
repair procedures including Lexus 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 Lexus ES250 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR Lexus ES250 AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported Lexus ES250 cars and light trucks from 1990+
Lexus -> Component Replacement & Adjustment -> HEATER UNIT, REPLACE -> LS400
Vehicle: 1991 Lexus ES250 2.5 V6 GAS
LS400
- Discharge refrigerant from the refrigeration system.
- Drain engine coolant from radiator.
- Remove water valve.
- Remove cooling unit as outlined under "Cooling Unit, Replace."
- Working from inside...
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BRAKE SERVICE PROCEDURES FOR Lexus ES250 AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported Lexus ES250 cars and light trucks from 1990+.
DISC BRAKES -> Front Disc Brakes -> CALIPER REPLACEMENT
Vehicle: 1990 Lexus ES250 2.5 V6 GAS
- Remove brake hose from caliper assembly, by removing union bolt and gaskets.
- Remove caliper bolts from torque plate, then the caliper.
- Remove brake pads and hardware as outlined in "Brake Pads,... "
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FUEL FILTER REPLACEMENT PROCEDURES FOR Lexus ES250 AUTOMOBILES
Fuel filter replacement procedures with corresponding images for most domestic and imported Lexus ES250 cars and light trucks sold in the U.S. for 1980+.
Lexus -> Fuel Filter Replacement -> 1990-91 ES250 -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 1991 Lexus ES250 2.5 V6 GAS
Fuel System Pressure Relief
- Obtain the vehicle owners radio theft protection code prior to disconnecting the battery ground cable, if equipped.
- Disconnect the battery ground cable.
- Remove the fuel fill cap to release fuel tank pressure.
- Place a shop towel over the union bolt at top of fuel filter. Slowly loosen the union bolt allowing the fuel pressure to bleed down.
- When ever the union bolt is loosened to relieve fuel system pressure, always replace the bolt gasket.
Removal & Installation
Do not smoke or allow an open flame of any type when working on or near any fuel system related com...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR Lexus ES250 AUTOMOBILES
Includes CV axle, universal joint, and driveline replacement, for domestic and imported Lexus ES250 cars and light trucks from 1990+.
CV AXLE SHAFT, Replace
Vehicle: 1990 Lexus ES250 2.5 V6 GAS
- Raise and support vehicle.
- Remove front fender apron seal.
- Remove cotter pin and lock nut cap.
- Loosen bearing lock nut while depressing brake pedal.
- Drain out gear oil fluid.
- Remove cotter pin and nut from tie rod end.
- Using a suitable puller or SST 09923-00020 disconnect tie rod end from steering knuckle.
- Remove nut and disconnect stabilizer bar link from lower arm.
- Remove bolt and two nuts.
- Disconnect steering knuckle from lower ball joint.
- Place match marks on drive shaft and side gear shaft or center drive shaft. Do not use a punch to mark matchmarks. Use paint, etc.
- Loosen six ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR Lexus ES250 AUTOMOBILES
Includes starter and alternator replacement procedures for domestic and imported Lexus ES250 cars and light trucks from 1990+.
Alternator, Replace
Vehicle: 1990 Lexus ES250 2.5 V6 GAS
- Loosen pivot bolt, adjusting lock bolt and adjusting bolt, and remove drive belt.
- Disconnect alternator connector.
- Remove nut, and disconnect alternator wire.
- Disconnect wire harness from clip.
- Remove pivot bolt, plate washer, adjusting ...
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MAINTENANCE LAMP RESET PROCEDURES FOR Lexus ES250 AUTOMOBILES
Maintenance lamp reset procedures with corresponding images for most domestic and imported Lexus ES250 cars and light trucks sold in the U.S. from 1990+.
Lexus -> Low Oil Level Warning Indicator ->
Vehicle: 1991 Lexus ES250 2.5 V6 GAS
This lamp lights to indicate that the engine oil level is below a specified level. The lamp will be illuminated during engine start-up. If...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR Lexus ES250 AUTOMOBILES
Includes radiator, cooling and heater hose replacement procedures for domestic and imported Lexus ES250 cars and light trucks from 1990+
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1990 Lexus ES250 2.5 V6 GAS
Inlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at heater core.
- Remove hose from heater core.
- Reposition hose clamp at water outlet on cylinder head.
- Remove hose from water outlet.
- Remove hose from vehicle.
- Reverse procedure to install.
Outlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at heater co...
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SERPENTINE BELT SERVICE PROCEDURES FOR Lexus ES250 AUTOMOBILES
Serpentine belt replacement procedures with corresponding images for most domestic and imported Lexus ES250 cars and light trucks sold in the U.S. from 1990+.
Serpentine Drive Belt, Replace
Vehicle: 1991 Lexus ES250 2.5 V6 GAS
- Loosen pivot bolt and adjusting lock bolt on alternator.
- Remove drive bolt.
- Remove drive belt.
- ...
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COMPONENT LOCATION DIAGRAMS FOR Lexus ES250 AUTOMOBILES
Component location diagrams for most Lexus ES250 cars and light trucks sold in the U.S. from 1990+.
 I/P Main Harness Connectors (IC-1 Thru IH-1) Diagram for 1991 Lexus ES250 2.5 V6 GASComponents on diagram: |
 Anti-Lock Brake System (ABS) Components Diagram for 1991 Lexus ES250 2.5 V6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR Lexus ES250 AUTOMOBILES
OEM drawn wiring diagrams for most Lexus ES250 cars and light trucks sold in the U.S.
 1991 Lexus ES250 2.5 V6 GAS Wiring DiagramComponents on diagram: |
 1990 Lexus ES250 2.5 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR Lexus ES250 AUTOMOBILES
OEM TSB listings for most Lexus ES250 cars and light trucks sold in the U.S. from 1985+.
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Document: REPLACEMENT CERTIFICATION LABELS - REVISED Vehicle: 1991 Lexus ES250 2.5 V6 GAS Auto Systems: |
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Document: WARRANTY INFORMATION - TESTING OF BATTERIES Vehicle: 1991 Lexus ES250 2.5 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR Lexus ES250 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most Lexus ES250 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 Lexus ES250 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 Lexus ES250 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 Lexus ES250 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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