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1998 Infiniti Q45 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Infiniti 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
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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
Air Bag System Precautions -> Infiniti -> Arming
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
For "Infiniti QX4" Information, Refer To "Pathfinder" In "Nissan."
- Ensure no one is inside vehicle.
- Connect battery cables as required.
- From a safe location at sides of or below air bag modules, turn ignit...
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BRAKE SERVICE PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Disc Brakes -> Parking Brake Service -> G20, I30 & I35 -> Inspection -> J30 & Q45 -> Replace
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
Replace
G20, I30 & I35
Refer to Figs. and when inspecting and removing the parking brake cable.
- Remove center console.
- Disconnect warning switch connector, Fig. .
- Remove mounting bolts and adjusting nut.
- Remove parking brake cable lock plate, Fig. .
J30 & Q45
- Raise and support vehicle, then remove wheels.
- Remove caliper mounting pins/bolts without disconnecting brake hose, Fig. .
- If removing rear rotors, remove adjuster hole plug, then back off...
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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
DRIVESHAFT, Replace
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
- Place vehicle in neutral and release parking brake.
- Raise vehicle off ground and support it with safety stands in proper locations.
- Loosen center bearing bracket nuts. Do not remove center bearing bracket nuts.
- Mark companion flange on front drive. Its recommended to use paint for reference marks. Never damage driveshaft flange and companion...
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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 -> Anti-Lock Brake System Warning Lamp -> 1997-2002 Q45
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
This lamp will be illuminated when the ignition switch is placed in the on position as a bulb check. If the lamp remains lit or lights during vehicle operation, a problem in the anti-lock brake/traction control system is indicated. When the lamp is lit, place the ignition switch in the off position, then restart the engine. If the lamp remains lit, the system must be serviced. The basic brake system will remain functional. After servicing the system, proceed as follows:
- Locate the DLC located under the lefthand side of the instrument panel.
- Place ignition switch in the on position.
- O...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1998 Infiniti Q45 AUTOMOBILES
Radiator, Replace
Vehicle: 1998 Infiniti Q45 4.1 V8 GAS
- Remove engine under cover and drain radiator coolant into suitable container.
- Disconnect upper and lower radiator hoses.
- Remove radiator shroud, Fig. ...
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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+.
 Door Wiring Harness Connector Location Diagram for 1998 Infiniti Q45 4.1 V8 GASComponents on diagram: |
 I/P Main Wiring Harness 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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