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1990 Ford Bronco 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
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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 1990 Ford Bronco car and truck
repair procedures including Ford 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 Ford Bronco automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1990 Ford Bronco AUTOMOBILES
A/C & Cooling System Maintenance -> Ford Motor Co. -> 1990-93 Ford Aerostar, Bronco II & Explorer & 1990-94 Ranger
Vehicle: 1990 Ford Bronco 4.9 L6 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Ford Bronco AUTOMOBILES
ANTI-LOCK BRAKE SYSTEM, FORD -> SYSTEM SELF-TEST FEATURE
Vehicle: 1990 Ford Bronco 4.9 L6 GAS
Two warning lamps are located on the instrument panel to alert the driver to a system malfunction. The red brake warning lamp is used to indicate conventional brake system malfunctions such as low fluid level, parking brake applied and low vacuum conditions (diesel engines only). The yellow anti-lock system warning lamp is used to indicate proper warning lamp circuit operation (2 second illumination with ignition On or engine cranking). If yellow lamp comes on while vehicle is being driven, it is alerting the driver of an anti-lock system malfunction and yellow lamp can...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Ford Bronco AUTOMOBILES
Ford Motor Co. Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 1980-92 Bronco, F-Super Duty & F150-350 w/Gasoline Engines -> Normal Service -> Severe Service
Vehicle: 1990 Ford Bronco 5.8 V8 GAS
Norm...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Ford Bronco AUTOMOBILES
DRIVESHAFT, Replace -> Front -> One Piece Driveshaft -> Rear -> Three Piece Driveshaft -> Two Piece Driveshaft
Vehicle: 1990 Ford Bronco 5.8 V8 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 four 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:
- Torque flange bolts to 30 ft. lbs.
- Torque U-joint retainer bolts to 16 ft. lbs.
Rear
One Piece Driveshaft
- Raise and support vehicle.
- To maint...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Ford Bronco AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Ford Bronco 5.0 V8 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 Bronco AUTOMOBILES
Ford Motor Co. Trucks -> Traction Control System Warning Lamp ->
Vehicle: 1990 Ford Bronco 5.0 V8 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 Bronco AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1990 Ford Bronco 5.0 V8 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 Bronco AUTOMOBILES
Serpentine Drive Belt, Replace -> Automatic Tension -> Manual Tension
Vehicle: 1990 Ford Bronco 4.9 L6 GAS
Automatic Tension
- Install suitable 5/16 inch closed end wrench on tensioner pulley bolt, then lift tensioner arm away from belt. Do not use socket and ratchet.
- Remove belt, slowly release tensioner. Do not allow tensioner to snap back, as damage may result.
- Reverse procedure to install.
Manual Tension
- Loosen accessory adjustment bolt and pivot bolt.
- Remove belt.
- Reverse procedure to install, adjust belt tension as follows:
- Lo...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Ford Bronco AUTOMOBILES
Component location diagrams for most 1990 Ford Bronco cars and light trucks sold in the U.S. from 1990+.
 RH Door Switches Diagram for 1990 Ford Bronco 5.0 V8 GASComponents on diagram: |
 Speed Control Servo Diagram for 1990 Ford Bronco 5.8 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1990 Ford Bronco AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Ford Bronco cars and light trucks sold in the U.S.
 1990 Ford Bronco 5.0 V8 GAS Wiring DiagramComponents on diagram: |
 1990 Ford Bronco 5.8 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Ford Bronco AUTOMOBILES
OEM TSB listings for most 1990 Ford Bronco cars and light trucks sold in the U.S. from 1985+.
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Document: MERCON ATF IS BEING REPLACED BY MERCON V AS A SERVICE FLUID FOR SOME MANUAL TRANSMISSIONS Vehicle: 1990 Ford Bronco 5.0 V8 GAS Auto Systems: |
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Document: TRANSMISSION - 4R100/E40D - TORQUE CONVERTER ACCESS EXTERNAL DUST PLUG MAY BECOME DISLODGED Vehicle: 1990 Ford Bronco 5.0 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Ford Bronco AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Ford Bronco 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 Bronco 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 Bronco 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 Bronco 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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