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1990 Ford Ranger CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Ford 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
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
A/C & Cooling System Maintenance -> Ford Motor Co. -> 1990-93 Ford Aerostar, Bronco II & Explorer & 1990-94 Ranger
Vehicle: 1990 Ford Ranger Super 2.3 L4 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
POWER BRAKE UNITS, FORD -> Bendix Hydro-Boost Brake Booster -> BRAKE BOOSTER SERVICE -> INSTALLATION -> REMOVAL
Vehicle: 1990 Ford Ranger Super 2.9 V6 GAS
The hydra-boost power brake booster is serviced as a unit.
REMOVAL
- With engine off, depress brake pedal several times to discharge the accumulator.
- Remove master cylinder from brake booster and position up and out of the way. Do not apply booster with master cylinder removed.
- Disconnect three hydraulic lines from booster, then disconnect input pushrod from brake pedal assembly, Fig. .
- Remove booster mounting nuts, then remove booster from vehicle. Do not carry booster by the accumulator and be careful not to drop booster on the accumulator. The snap ring on the accumulator shou...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
Ford Motor Co. Light Trucks, SUVs & Vans -> Fuel Pressure Relief -> Gasoline Fuel Injected Engines Except Escape, Freestar, Mariner, Monterey, Villager, 2005-06 Aviator, Explorer & Mountaineer, 2005-06 Expedition & Navigator & 2004-06 F150 & Mark LT
Vehicle: 1990 Ford Ranger Super 4.0 V6 GAS
The fuel system remains under high pressure even when the engine is not running. This residual pressure must be relieved before servicing the fuel system. To avoid injury or fire, release pressure from the fuel system before disconnecting any fuel line.
The fuel system pressure must be relieved prior to disconnecting fuel lines to prevent accidental spray of fuel.
After the battery ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Rear
Vehicle: 1990 Ford Ranger Super 2.3 L4 GAS
Front
- Raise and support the vehicle.
- Index-mark front driveshaft to front axle flange and at transfer case flange.
- Remove and discard bolts and U-joint retainers.
- Remove and discard flange bolts.
- Compress and separate front driveshaft from front axle, then separate driveshaft from transfer case. Wrap electrical tape around the bearing cups to prevent them from falling off the U-joint spider.
- Reverse procedure to install, noting the following:
- Tighten transfer case flange bolts in a cross pattern.
- Torque front propeller shaft flange bolts to transfer case to 75 ft. lbs. if equipped.
- T...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Ford Ranger Super 2.3 L4 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 1990 Ford Ranger AUTOMOBILES
Ford Motor Co. Trucks -> Traction Control System Warning Lamp ->
Vehicle: 1990 Ford Ranger Super 2.3 L4 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the warni...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1990 Ford Ranger Super 2.9 V6 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp at radiator outlet and remove hose.
- Reposition hose clamp at water pump and remove hose.
- Remove hose from vehicle.
- Reverse procedure to install.
Upper
- Drain cooling system into a s...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Ford Ranger AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Ford Ranger Super 2.3 L4 GAS
- Loosen adjustment and pivot bolts on accessories needing belts replaced, then remove old belts.
- Install new belt over pulleys, tension belt, then tighten adjustment and pivot bolts t...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Ford Ranger AUTOMOBILES
Component location diagrams for most 1990 Ford Ranger cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 1990 Ford Ranger AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Ford Ranger cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Ford Ranger AUTOMOBILES
OEM TSB listings for most 1990 Ford Ranger 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: 1990 Ford Ranger 2.3 L4 GAS Auto Systems: |
Document: MERCON ATF IS BRING REPLACED BY MERCON V ATF AS A SERVICE FLUID Vehicle: 1990 Ford Ranger 2.3 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Ford Ranger AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Ford Ranger 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 Ford Ranger 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 Ford Ranger 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 Ford Ranger 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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