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1991 Ford Explorer CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Ford 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
- 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 1991 Ford Explorer AUTOMOBILES
A/C & Cooling System Maintenance -> Ford Motor Co. -> 1990-93 Ford Aerostar, Bronco II & Explorer & 1990-94 Ranger
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
ANTI-LOCK BRAKE SYSTEM, FORD -> SYSTEM DESCRIPTION & OPERATION
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
The rear anti-lock brake system constantly monitors rear wheel speed. In the event of an impending rear brake lockup, the system regulates hydraulic pressure to the rear brakes, preventing total lockup when the brakes are applied and thereby reducing the possibility of skidding.
The system consists of a yellow warning light on the instrument panel, an electro-hydraulic rear anti-lock brake system (RABS) valve mounted on the frame rail behind the crossmember, a speed sensor mounted on the rear drive axle, an exciter ring mounted on the differential case and a comput...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
Ford Motor Co. Light Trucks, SUVs & Vans -> Component Locations -> Aviator, 1991-06 Explorer & Mountaineer, 1986-06 Ford Ranger & 1986-90 Bronco II w/Fuel Injected Engine
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
DRIVESHAFT, Replace -> Four Wheel Drive (4WD) -> Front -> Rear -> Two Wheel Drive (2WD)
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
Front
The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the rear jack storage area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.
- With vehicle in neutral, raise and support vehicle.
- Index-mark front axle pinion flange to front driveshaft.
- Remove transfer case skid plate.
- Index-mark transfer case pinion flange to front ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
Alternator, Replace
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
- Disconnect battery ground cable.
- Remove air cleaner assembly, if required.
- Disconnect wire harness connectors from voltage regulator.
- Remove accessory drive belt.
- Remove alternator mounting bolts, then alternator from vehi...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
Ford Motor Co. Trucks -> Air Bag Warning Lamp ->
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the Air Bag warning ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition hose clamp at heater core and remove hose.
- Reposition hose clamp at coolant tube and remove hose.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Ford Explorer AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Ford Explorer 4.0 V6 GAS
- Raise tensioner by turning counterclockwise, then remove belt.
- Install new be...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Ford Explorer AUTOMOBILES
Component location diagrams for most 1991 Ford Explorer cars and light trucks sold in the U.S. from 1990+.
Engine Compartment Components Diagram for 1991 Ford Explorer 4.0 V6 GAS Components on diagram: |
Body Components Diagram for 1991 Ford Explorer 4.0 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1991 Ford Explorer AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Ford Explorer cars and light trucks sold in the U.S.
1991 Ford Explorer 4.0 V6 GAS Wiring Diagram Components on diagram: |
1991 Ford Explorer 4.0 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Ford Explorer AUTOMOBILES
OEM TSB listings for most 1991 Ford Explorer cars and light trucks sold in the U.S. from 1985+.
Document: MERCON ATF IS BEING REPLACED BY MERCON V AS A SERVICE FLUID FOR SOME MANUAL TRANSMISSIONS Vehicle: 1991 Ford Explorer 4.0 V6 GAS Auto Systems: |
Document: MERCON ATF IS BRING REPLACED BY MERCON V ATF AS A SERVICE FLUID Vehicle: 1991 Ford Explorer 4.0 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Ford Explorer AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Ford Explorer 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 Ford Explorer 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 Ford Explorer 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 Ford Explorer 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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