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1990 Mitsubishi Sigma CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Mitsubishi REPAIR SHOPS DON'T WANT YOU TO KNOW
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- 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 Mitsubishi Sigma car and truck
repair procedures including Mitsubishi 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 Mitsubishi Sigma automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
A/C & Cooling System Maintenance -> Mitsubishi -> 1990-2002 Diamante, Eclipse, Expo, Galant, Lancer, Mirage, Sigma & 3000GT
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
MITSUBISHI, DISC BRAKES -> Eclipse, Expo, Galant & Sigma -> REAR BRAKES -> BRAKE PADS, REPLACE -> CALIPER INSTALLATION -> CALIPER REMOVAL -> CALIPER SERVICE -> Eclipse & Galant -> Expo & Sigma -> PARKING BRAKE ADJUSTMENT -> PARKING BRAKE OVERHAUL -> ROTOR, REPLACE
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
BRAKE PADS, REPLACE
- Raise and support vehicle, then remove wheel.
- Remove parking brake cable.
- Remove lower lockpin, Figs. through , and lift caliper body upward, then support caliper with wire. Lockpin is coated with special grease. Use caution not to remove grease and ensure no dirt adheres to pin.
- Remove outer shim and pad assembly from caliper support.
- Remove pad clips.
- Measure hub torque with pad removed to aid in measuring brake drag torque after pad installation, Fig. .
- Press piston into cylinder using a suitable tool. Ensure stopper grooves in rear of piston are in the vertical pos...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
Mitsubishi -> Component Locations -> 1989-90 Sigma
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
Refer to Fig....
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
- Loosen drive shaft nut while vehicle is on floor with brakes applied.
- Raise and support vehicle.
- Remove front wheels and tires.
- Using a suitable tool, disconnect lower arm ball joint from knuckle.
- Using a suitable tool, disconnect tie rod end from knuckle.
- Remove drive shaft nut.
- Using a suitable tool, push out drive shaft and inner shaft assembly (L.H.) or drive shaft (R.H.) from hub. If the inner shaft is hard to remove from tran...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
Starter, Replace
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
- Disconnect battery ground cable.
- Remove air cleaner assembly and intake manifold stay.
- Remove EGR valve, if equipped, then speedometer cable.
- Remov...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
Mitsubishi -> Malfunction Indicator Lamp (MIL) ->
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
Immediately after the ignition switch is placed in the On position, the MIL will light for 5 seconds to indicate proper operation. The MIL will illuminate to indicate an emission control item fault. After diagnosis and repair are complete, place the ignition switch in the Off position, then clear st...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Mitsubishi Sigma AUTOMOBILES
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1990 Mitsubishi Sigma 3.0 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 heater pipe.
- Remove hose from heater pipe.
- 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 1990 Mitsubishi Sigma AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS
- Disconnect negative cable from battery.
- Loosen tensioner lock nut...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Mitsubishi Sigma AUTOMOBILES
Component location diagrams for most 1990 Mitsubishi Sigma cars and light trucks sold in the U.S. from 1990+.
 Electronic Transaxle Component Locations Diagram for 1990 Mitsubishi Sigma 3.0 V6 GASComponents on diagram: |
 Rear Shelf Connector Locations Diagram for 1990 Mitsubishi Sigma 3.0 V6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 Mitsubishi Sigma AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Mitsubishi Sigma cars and light trucks sold in the U.S.
 1990 Mitsubishi Sigma 3.0 V6 GAS Wiring DiagramComponents on diagram: |
 1990 Mitsubishi Sigma 3.0 V6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Mitsubishi Sigma AUTOMOBILES
OEM TSB listings for most 1990 Mitsubishi Sigma cars and light trucks sold in the U.S. from 1985+.
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Document: NEW TECHLINE HOURS Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS Auto Systems: |
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Document: RECOMMENDED CORROSION INHIBITOR FOR ACCESSORY INSTALLATION Vehicle: 1990 Mitsubishi Sigma 3.0 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Mitsubishi Sigma AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Mitsubishi Sigma 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 Mitsubishi Sigma 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 Mitsubishi Sigma 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 Mitsubishi Sigma 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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