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1990 Isuzu Impulse CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Isuzu 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
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
A/C & Cooling System Maintenance -> Isuzu -> Isuzu Impulse & Stylus
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
ANTI-LOCK BRAKES -> COMPONENT REPLACEMENT -> Amigo, Pickup & Rodeo -> Amigo, Pickup, Rodeo & Trooper w/Rear Wheel ABS -> ELECTRONIC BRAKE CONTROL MODULE (EBCM) -> ELECTRONIC CONTROL MODULE (ECM) -> FRONT SPEED SENSOR -> G-SENSOR -> HYDRAULIC UNIT -> Impulse -> Impulse & Trooper w/Four Wheel ABS -> ISOLATION/DUMP VALVE -> REAR SPEED SENSOR -> SPEED SENSOR -> Trooper w/Four Wheel ABS -> Trooper w/Rear Wheel ABS
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
These components are non-serviceable and must be replaced as a unit, do not try to disassemble components.
HYDRAULIC UNIT
Impulse
- Remove undercover, then inner liner, Fig.
- Disconnect harness connectors.
- Remove radiator reservoir tank.
- Disconnect brake lines from hydraulic unit, then cap lines to prevent entry of foreign material into brake system.
- Remove ground strap retaining bolt, then ground cable.
- Remove bracket fixing bolt, then hydraulic unit fixing nuts.
- Remove hydraulic unit from vehicle.
- Reverse procedure to install, noting the following:
- Torque hydraulic unit fixing nuts, ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
Isuzu -> Fuel Filter Scheduled Maintenance -> 1983-93 Impulse & Stylus -> Normal Service -> Severe Service
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
Normal Service
Service interval not specified by ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
- Disconnect battery ground cable.
- Raise and support vehicle.
- Drain transaxle fluid.
- Remove wheel assembly.
- Unstake hub nut, then remove nut.
- Remove tie rod end from steering knuckle.
- Disconnect lower control arm from steering knuckle.
- Remove drive axle from hub assembly, using a plastic hammer.
- Remove drive axle assembly from transaxle, using slide hammer (Tool No....
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
Starter, Replace
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
- Disconnect battery ground cable at battery.
- Disconnect wiring from solenoid.
- Remove...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
Isuzu -> Anti-Lock Brake System (ABS) Warning Lamp -> 1990-92 Impulse
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
The ABS warning lamp is used to warn of a system fault. The lamp monitors the condition of the ABS. It will be lit during engine start-up, but should go off when the self-diagnostic system determines t...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1990 Isuzu Impulse 1.6 L4 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...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Isuzu Impulse AUTOMOBILES
Serpentine Drive Belt, Replace -> Alternator -> Power Steering
Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS
Alternator
- Disconnect battery ground cable.
- Loosen alternator pivot bolt.
- Loosen alternator swing bolt.
- Push alternator toward engine to relieve belt tension.
- Remove alternator drive belt.
- Clean and inspect belt surfaces of all pulleys.
- Reverse procedure to install.
Power...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Isuzu Impulse AUTOMOBILES
Component location diagrams for most 1990 Isuzu Impulse cars and light trucks sold in the U.S. from 1990+.
I/P & Starter Harness Connector Locations Diagram for 1990 Isuzu Impulse 1.6 L4 GAS Components on diagram: |
Behind Front Console, Radio Removed Diagram for 1990 Isuzu Impulse 1.6 L4 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1990 Isuzu Impulse AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Isuzu Impulse cars and light trucks sold in the U.S.
1990 Isuzu Impulse 1.6 L4 GAS Wiring Diagram Components on diagram: |
1990 Isuzu Impulse 1.6 L4 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Isuzu Impulse AUTOMOBILES
OEM TSB listings for most 1990 Isuzu Impulse cars and light trucks sold in the U.S. from 1985+.
Document: WARRANTY PROCEDURES Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS Auto Systems: |
Document: CHANGES TO TECHNICAL ASSISTANCE LINE (TAL) Vehicle: 1990 Isuzu Impulse 1.6 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Isuzu Impulse AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Isuzu Impulse 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 Isuzu Impulse 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 Isuzu Impulse 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 Isuzu Impulse 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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