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1998 Infiniti Q45 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Infiniti 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
- Cabin Air Filter Locations & 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 1998 Infiniti Q45 car and truck
repair procedures including Infiniti 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 Infiniti Q45 automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Imported Cars & Light Trucks & Vans -> 1998-2000 -> System Inspection -> Compressor -> Condenser -> Evaporator -> Receiver-Drier/Accumulator -> Refrigerant Line Restrictions -> Thermostatic Expansion Valve
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
While a detailed diagnostic procedure for all air conditioning systems would be impractical due to the many variations in construction and operation, there are three fundamental components of a total diagnosis:
- Refrigerant systems must have an adequate, but not excessive charge.
- Determination must be made whether the refrigerant system is governed by a cycling clutch compressor or by valves which control evaporator pressure.
- The air distribution system (blower motor, switches, vacuum lines and air ducts) must be operational before checking the ...
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BRAKE SERVICE PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Hydraulic Brake Systems -> Adjustments -> Pedal Height
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Pedal Height
Refer to "Disc Brak... "
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Infiniti -> Fuel Filter Scheduled Maintenance -> All Models -> Normal Service -> Severe Service
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Normal Service
Service as req...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
CV AXLE SHAFT, Replace -> Front
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Front
Before removing driveshaft, disconnect ABS wheel sensor to prevent damage to sensor. Cover boots with shop towel to prevent damage when removing driveshaft.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front wheels.
- Remove cotter pin and driveshaft castle nut and washer from front hub. When removing driveshaft, cover boots with shop towel to prevent damage to...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Alternator, Replace
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
- Disconnect battery ground cable.
- Remove engine under cover.
- Remove drive belt.
- Disconnect harness connector.
- Remove mounting bolts and alternator with bracket.
- Remove mounting bolts an...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Cabin Air Filter Service -> Infiniti -> 1996-2001 Q45
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Under normal operating conditions the cabin air filter should be replaced every 12 months or 15,000 miles. In dusty areas change the cabin air filter more often.
- Remove the passenger side instrument panel under cover.
- Remove the glove compartment.
- Remove the instrument reinforcement from instrument panel.
- Remove the cabin air filter cover retainer clip, then the cover, Fig. .
- Remove the lower cabin air filter element, then the upper el...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Infiniti -> Check Suspension Warning Lamp ->
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
This lamp may indicate a malfunction in the auto-leveling suspension. After diagnosis and rep...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Lower
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at radiator outlet.
- Remove hose from radiator.
- Reposition hose clamp at thermostat housing.
- Remove hose from thermostat housing.
- Remove hose from vehicle.
- Reverse pr...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Serpentine Drive Belt, Replace -> Air Conditioning -> Alternator and Power Steering
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Alternator and Power Steering
- Disconnect battery ground cable from battery.
- Remove front engine undercover with suitable tool.
- Loosen idler pulley lock nut and adjust tension by turning adjusting bolt.
- Remove drive belt.
- Clean and inspect belt surfaces of all pulleys.
- Reverse procedure to install, noting the following:
- Torque alternator idle...
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COMPONENT LOCATION DIAGRAMS FOR 1998 Infiniti Q45 AUTOMOBILES
Component location diagrams for most 1998 Infiniti Q45 cars and light trucks sold in the U.S. from 1990+.
 Engine Compartment Electrical Connector Locations Diagram for 1998 Infiniti Q45 4.1 V8 GASComponents on diagram: |
 Body Wiring Harness Electrical Connector Locations Diagram for 1998 Infiniti Q45 4.1 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1998 Infiniti Q45 AUTOMOBILES
OEM drawn wiring diagrams for most 1998 Infiniti Q45 cars and light trucks sold in the U.S.
 1998 Infiniti Q45 4.1 V8 GAS Wiring DiagramComponents on diagram: |
 1998 Infiniti Q45 4.1 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1998 Infiniti Q45 AUTOMOBILES
OEM TSB listings for most 1998 Infiniti Q45 cars and light trucks sold in the U.S. from 1985+.
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Document: A/C System O-Ring Seal Leaks Vehicle: 1998 Infiniti Q45 4.1 V8 GAS Auto Systems: |
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Document: Windshield Cracking Vehicle: 1998 Infiniti Q45 4.1 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1998 Infiniti Q45 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1998 Infiniti Q45 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 1998 Infiniti Q45 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 1998 Infiniti Q45 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 1998 Infiniti Q45 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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