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1991 Jaguar XJS CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Jaguar REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
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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 1991 Jaguar XJS car and truck
repair procedures including Jaguar 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 Jaguar XJS automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
Jaguar -> Cooling Fans -> COMPONENT DIAGNOSIS & TESTING -> THERMOSTATIC SWITCH
Vehicle: 1991 Jaguar XJS Classic Collection 5.3 V12 GAS
THERMOSTATIC SWITCH
- Ensure A/C controls are in Off position.
- Turn ignition On.
- Turn A/C contr...
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BRAKE SERVICE PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
JAGUAR, DISC BRAKES -> CALIPER OVERHAUL -> Front -> Rear -> XJ6 -> XJS
Vehicle: 1991 Jaguar XJS Classic Collection 5.3 V12 GAS
XJS
Front
Do not remove or attempt to remove bolts securing halves of caliper together.
- Remove spring clips (1), retaining piston dust covers (2). Fig. . Remove dust covers (3).
- Carefully feed compressed air into caliper brake line port. Remove pistons from caliper.
- Carefully pry each seal (4) Fig. , from recess in each piston cylinder bore.
- Thoroughly clean all components using brake cleaning fluid.
- Examine pistons and cylinder bores for signs of abrasion, scuffing, scratches or corrosion. If any of above conditions are evident, a new caliper must be use.
- Coat new seals with brake lub...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
Jaguar -> Fuel Filter Replacement -> XJS -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 1991 Jaguar XJS Classic Collection 5.3 V12 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy.
Fuel System Pressure Relief
- Disconnect the battery ground cable.
- Remove the fuel pump relay.
- On 1993-96 mod...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1991 Jaguar XJS 5.3 V12 GAS
- Raise and support vehicle on a four post lift.
- Remove front muffler and attached exhaust pipes.
- Match mark front driveshaft coupling to transmission drive flange.
- Unbolt driveshaft from transmission.
- Remove nuts and bolts connecting flexible coupling to differential driv...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
Alternator, Replace
Vehicle: 1991 Jaguar XJS 5.3 V12 GAS
- Disconnect battery ground cable, then raise and support vehicle.
- Remove link arm pivot bolt and swing alternator toward engine.
- Remove link arm and trunnion assembly from water pump, then remove pivot bolt.
- Di...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
Jaguar -> Check Engine Lamp -> 1990-94
Vehicle: 1991 Jaguar XJS 5.3 V12 GAS
The Check Engine lamp will be illuminated when the ignition switch is in the On position and the engine is not running. When the engine is started, the lamp should go out. If it remains lit, a diagnostic trouble ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
Heater Hose, Replace -> Bypass -> Inlet -> Outlet
Vehicle: 1991 Jaguar XJS 5.3 V12 GAS
Inlet
- Drain coolant into a suitable container.
- Release and reposition hose clip, and disconnect hose from heater control valve.
- Release and reposition hose clip, and disconnect hose from heater core.
- Remove hose assembly from vehicle.
- Reverse procedure to install.
Outlet
- Drain coolant into a suitable container.
- Release and reposition hose clip, and disconnect hose from heater control...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Jaguar XJS AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Jaguar XJS 5.3 V12 GAS
- Disconnect battery ground cable.
- Loosen jockey pulley carrier securing block.
- Loosen trunnion lock...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Jaguar XJS AUTOMOBILES
Component location diagrams for most 1991 Jaguar XJS cars and light trucks sold in the U.S. from 1990+.
 Left Forward Harness & Connectors Diagram for 1991 Jaguar XJS Classic Collection 5.3 V12 GASComponents on diagram: |
 Engine Harness & Connectors Diagram for 1991 Jaguar XJS 5.3 V12 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1991 Jaguar XJS AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Jaguar XJS cars and light trucks sold in the U.S.
 1991 Jaguar XJS Classic Collection 5.3 V12 GAS Wiring DiagramComponents on diagram: |
 1991 Jaguar XJS Classic Collection 5.3 V12 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Jaguar XJS AUTOMOBILES
OEM TSB listings for most 1991 Jaguar XJS cars and light trucks sold in the U.S. from 1985+.
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Document: REMOVAL OF SEIZED OXYGEN (O2) SENSORS - REVISED Vehicle: 1991 Jaguar XJS Classic Collection 5.3 V12 GAS Auto Systems: |
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Document: 'BREED' MECHANICALLY-ACTIVATED SRS AIRBAGS - SERVICEABLE LIFE Vehicle: 1991 Jaguar XJS Classic Collection 5.3 V12 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Jaguar XJS AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Jaguar XJS 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 1991 Jaguar XJS 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 1991 Jaguar XJS 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 1991 Jaguar XJS 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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