Maintenance Information Ford Bronco II I

VIN LOCATION

The Vehicle Identification Number (VIN) is located on the left side of the dash panel at the base of the windshield. The VIN chart explains the code characters.

VIN CODE ID EXPLANATION

Numbers preceding the explanations in the legend below refer to the sequence of characters as listed on VIN identification label. See VIN example below.

VIN Code ID Explanation. Scheme 3

SEVERE & NORMAL SERVICE DEFINITIONS

Note. Use the Severe Service schedule if the vehicle to be serviced is operated under ANY (one or more) of these conditions

Service is recommended at mileage intervals based on vehicle operation. Normal Service and Severe Service are based on the following primary operating conditions

Normal Service

1. Driven More Than 10 Miles Daily
2. No Operating Conditions From Severe Service List

Severe Service

1. Short Trips (About 10 Miles) In Freezing Temperatures
2. Towing Or Heavily Loaded.
3. Severe Dust Conditions
4. Hot Weather, Stop-And-Go Driving
5. Extensive Idling Conditions (Taxi Or Delivery Type Service)
6. Snow Plowing
7. High Speed Operation With Fully Loaded Vehicle

Note. Diesel-powered models require additional servicing. Refer to the Maintenance Schedules for diesel engines.

CAMSHAFT TIMING BELT

The condition of camshaft drive belts should always be checked on vehicles which have more than 50,000 miles. Although some manufacturers do not recommend belt replacement at a specified mileage, others require it at 60,000-100,000 miles. A camshaft drive belt failure may cause extensive damage to internal engine components on most engines, although some designs do not allow piston-to-valve contact. These designs are often called "Free Wheeling".

Many manufacturers changed their maintenance and warranty schedules in the mid-1980's to reflect timing belt inspection and/or replacement at 50,000-60,000 miles. Most service interval schedules in this manual reflect these changes.

Belts or components should be inspected and replaced if any of the following conditions exist

1. Cracks Or Tears In Belt Surface
2. Missing, Damaged, Cracked Or Rounded Teeth
3. Oil Contamination
4. Damaged Or Faulty Tensioners
5. Incorrect Tension Adjustment

Replace camshaft timing belt (including balance shaft belt) every 50,000 miles on diesel engines. Replace timing belt every 60,000 miles on 2.3L 4-cylinder engines.

ADDITIONAL MAINTENANCE

The following maintenance items should be performed every 6 months or 7500 miles on gasoline engines and every 6 months or 5000 miles on diesel engines: check wheel lug nut torque, inspect clutch reservoir fluid level, inspect exhaust system shielding, lubricate automatic transmission shift linkage and inspect fluid level (cable system), lubricate steering linkage joints and driveshaft if equipped with fittings.

REAR AXLE LUBRICATION

Rear axle lube quantities must be replaced every 100,000 miles, or if the axle has been submerged in water. Otherwise lube should not be checked unless a leak is suspected or repair required.

OFF-HIGHWAY VEHICLES

If vehicle is operated off-highway, perform the following items every 1000 miles. If vehicle is operated in mud and/or water, perform the following items daily.

1. Lubricate Front Axle, Steering And Clutch Linkages, Axle And Driveshaft U-Joints, And Slip Yoke If Equipped With Fittings.
2. Lubricate Automatic Transmission External Controls (Cable System).
3. Inspect Front Wheel Bearings And Lubrication.
4. Inspect Disc And Drum Brake Systems, Hoses And Lines, And Lube Caliper Slide Rails.
5. Inspect Exhaust System For Leaks, Damage, Or Loose Parts And Remove Any Foreign Material Trapped By Shielding.

Scheme 4

Scheme 5

Scheme 6

Scheme 7

SERVICE LABOR TIMES

Note. For 1990 and newer vehicles, labor times are provided, where available, within appropriate SERVICE INTERVAL table in SCHEDULED SERVICES article.

TIRE INFLATION

Inflation pressure and recommended tire size can be found on the Safety Compliance Certification Label decal attached to the rear face of the left door or door pillar.

WHEEL TIGHTENING

Tighten all wheel lug nuts to 100 ft. lbs. (136 N.m). If wheels are equipped with locking type lug nuts, ALWAYS position the keyed nut opposite the valve stem.

BATTERY SPECIFICATIONS

ANTI-LOCK BRAKE SYSTEM

The anti-lock brake system contains electronic equipment that can be susceptible to interference caused by improperly installed or high output radio transmitting equipment. Since this interference could cause the possible loss of the anti-lock braking capability, such equipment should be installed by qualified professionals.

On models equipped with anti-lock brake systems, ALWAYS observe the following cautions

1. DO NOT attempt to bleed hydraulic system without first referring to the appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES Section.
2. DO NOT mix tire sizes. As long as tires remain close to the original diameter, increasing the width is acceptable. Rolling diameter must be identical for all 4 tires. Some manufacturers recommend tires of the same brand, style and type. Failure to follow this precaution may cause inaccurate wheel speed readings.
3. Use ONLY recommended brake fluids. DO NOT use silicone brake fluids in an ABS-equipped vehicle.

REPLACING BLOWN FUSES

BATTERY REMOVAL

DO NOT use excessive pressure on end walls of a plastic-cased battery. Acid could be forced through the vent caps resulting in injury. Lift battery with a battery carrier or with hands on opposite corners.

BATTERY WARNING

BRAKE PAD WEAR INDICATOR

Indicator will cause a squealing or scraping noise, warning that brake pads need replacement.

BRAKE PAD REPLACEMENT

CATALYTIC CONVERTER (GASOLINE MODELS)

COOLANT (PROPYLENE-GLYCOL FORMULATIONS)

DIESEL FUEL ANTI-FUNGAL ADDITIVES

DIESEL FUEL CONTAMINATION

DIESEL FUEL REQUIREMENTS

Note: A Diesel Fuel #1 & #2 combination (Blended Fuel) may be

used, and is recommended for mild winter driving.

ELECTROSTATIC DISCHARGE SENSITIVE (ESD) PARTS

FUEL PUMP SHUT-OFF SWITCH

This switch stops the fuel pump after a collision. The impact does not have to be great to trigger the switch. To reset, press the White reset button on the switch located under the instrument panel, to the right of the transmission hump.

FUEL CONDITIONER (DIESEL ENGINES)

Allowing water to remain in fuel conditioner could result in extensive damage to or failure of fuel injection system. Diesel fuel can damage asphalt and other surfaces. Always place a drain pan under fuel conditioner to collect fuel, and dispose of fuel properly.

FUEL SYSTEM SERVICE

HALOGEN BULBS

JUMP STARTING (TURBO DIESEL)

STARTING FLUID USE (TURBO DIESEL)

RADIATOR FAN

TURBOCHARGED MODELS (TURBO-DIESEL)

WARRANTY INFORMATION

BASIC NEW CAR LIMITED WARRANTY

All parts of the vehicle, except tires, are covered against defects in factory-supplied materials and workmanship for 12 months or 12,000 miles, whichever occurs first.

POWERTRAIN WARRANTY

Note. Powertrain Warranty varies in coverage length (either 4 years/50,000 miles or 6 years/60,000 miles) depending on model year.

Under this warranty, certain parts of the engine, transmission, axle and driveline are warranted against defects in materials and workmanship. This coverage begins after 12 months or 12,000 miles. See copy of warranty for specific components covered and length of coverage.

BUMPER-TO-BUMPER COVERAGE

All 1992-93 vehicles have complete warranty coverage against defects in materials and workmanship for 3 years or 36,000 miles, whichever occurs first. There is no deductible with this warranty. Items not covered include tires and parts that are subject to normal wear and tear, such as windshield wiper blades, brake linings, brake pads, clutch linings and scheduled maintenance items. There is no extended powertrain coverage included in this warranty.

BATTERY COVERAGE

Begins at warranty start date and lasts up to 3 years or 36,000 miles, whichever occurs first. For the first 12 months in service (less than 36,000 miles), battery will be replaced at no charge. After that, battery will be replaced on a customer-participation basis: For the 13th-24th month in service, Ford will pay 50%; for the 25th-36th month, Ford will pay 25%. Labor is covered for 3 years or 36,000 miles, whichever occurs first.

SAFETY RESTRAINT SYSTEM COVERAGE

Begins at warranty start date and lasts for 5 years or 50,000 miles, whichever occurs first. Covers safety restraint problems not related to comfort or appearance. Coverage for model years earlier than 1990 is 3 years with unlimited miles.

CORROSION COVERAGE

Begins at warranty start date and lasts for 6 years or 60,000 miles, whichever occurs first. Covers any holes in body sheet metal caused by corrosion.

EMISSIONS DEFECT & PERFORMANCE WARRANTIES (EXCEPT CALIFORNIA)

Defect Warranty ensures that vehicle meets applicable EPA regulations and that vehicle's emission control system is free from defects in materials and workmanship for a period of 5 years or 50,000 miles, whichever occurs first.

The Performance Warranty covers all costs of repairing or adjusting any components or parts as needed for the vehicle to pass a Federally required state or local emissions test.

Other emission control parts related to these components are covered by the Performance Warranty, where applicable. If another part fails due to the failure of one of these components, both parts are covered. See customer's copy of warranty information for specific items covered. Performance Warranty coverage is limited to fewer components after 2 years or 24,000 miles.

EMISSIONS PERFORMANCE WARRANTY (CALIFORNIA)

If vehicle fails a Smog Check inspection, all necessary repairs and adjustments will be made by manufacturer to ensure that vehicle passes the inspection. Warranty begins at warranty start date and lasts for a period of 3 years or 50,000 miles, whichever occurs first.

EMISSIONS DEFECT WARRANTY (CALIFORNIA)

If any emission-related part on the vehicle is defective, the part will be repaired or replaced by manufacturer. Warranty begins at warranty start date and lasts for a period of 3 years or 50,000 miles, whichever occurs first.

Some emission-related parts are warranted for 7 years or 70,000 miles whichever occurs first, and will be repaired or replaced by manufacturer if found to be defective in material or workmanship. See customer's copy of warranty information for specific items covered.

FUSE PANEL LOCATIONS

The 1983-88 Bronco II has a fuse panel only and the 1989-90 Bronco II has a fuse panel and a Power Distribution Box (PDB). The fuse panel for all years is located under the instrument panel to the left of the steering column. The PDB is located on the right side of the engine compartment.

Scheme 8

Fuse & Circuit Breaker Identification

1. 1 - 15 Amp Brakelights, Emergency Warning Lights
2. 2 - 6 Amp (Circuit Breaker) Windshield Wiper/Washer
3. 3 - 15 Amp Taillights, Parking Lights, License Light, Headlights Warning Buzzer
4. 4 - 15 Amp Turn Signal Flasher, Back-Up Lights
5. 5 - 15 Amp Accessory Feed, Speed Control
6. 6 - 15 Amp Courtesy Lights, Dome Lights, Glove Box Light, Under Hood Light, Clock, Key Warning Buzzer, Headlight ON Buzzer, Electric Mirror
7. 7 - 30 Amp Heater & A/C Blower, A/C Clutch
8. 8 - 10 Amp Radio
9. 9 - 30 Amp (Circuit Breaker) Power Lumbar Supports, Power Locks
10. 10 - 20 Amp Power Windows
11. 11 - 20 Amp Cigarette Lighter, Horns
12. 12 - 5 Amp Instrument Panel Lights, Climate Control Illumination, Ashtray Light, Radio Illumination
13. 13 - 15 Amp Warning Lights & Buzzer, Electric Shift, Overhead Console, 4WD Indicator

Scheme 9

1. 1 - 15 Amp Four-Way Flash, Stoplights, Speed Control Inhibit
2. 2 - 20 Amp Horns
3. 3 - 20 Amp (Circuit Breaker) Cigarette Lighter, Flash-to-Pass, Power Lumbar (Explorer), Multifunction Switch (Explorer)
4. 4 - 10 Amp Instrument Panel Illumination, Park/H Light Hot (Bronco II & Ranger)
5. 5 - 15 Amp Premium Radio Amplifier, Trailer Tow (Explorer)
6. 6 - 20 Amp (Circuit Breaker 1989-90) 30 Amp (Circuit Breaker 1991) Power Windows, Lumbar (Bronco II & Ranger)
7. 7 - 20 Amp R.A.B.S Module
8. 8 - 10 Amp HEGO Heater
9. 9 - 20 Amp (Bronco II & Ranger) 15 Amp (Explorer) Cluster Warning Lights, Electronic All Wheel Drive (1991)
10. 10 - 15 Amp Speed Control Amplifier & Radio, Electronic All Wheel Drive 1989-90)
11. 11 - 15 Amp Parking Lights, License Lights
12. 12 - 30 Amp Blower Motor
13. 13 - 15 Amp Turn Signals, Back-Up Lights, Turn Indicator, Rear Defrost Control
14. 14 - 15 Amp Dome/Courtesy Light
15. 15 - 15 Amp Rear Window Washer/Wiper
16. 16 - 10 Amp A/C Switches, Clutch Coil
17. 17 - 6 Amp (Circuit Breaker) Front Washer/Wiper

Scheme 10

1. 1 - 30 Amp Fuel Relay
2. 2 - 40 Amp Headlights Fuse Panel
3. 3 - 60 Amp (2.3L, 2.9L & 3.0L 1989-91) Alt. Power 2 Not Used (Explorer 1990-91 & 4.0L Ranger 1990-92) 50 Amp (Explorer 1992) Blower Motor
4. 4 - 40 Amp Fuse Panel
5. 5 - 30 Amp Power Locks
6. 6 - 40 Amp Rear Defroster
7. 7 - 50 Amp (2.3L, 2.9L & 3.0L 1989-91) Alt. Power 1 60 Amp (Explorer 1992)
8. 8 - 30 Amp E.E.C. Relay
9. 9 - 40 Amp Electric Shift
10. 10 - 60 Amp Ignition
11. 11 - 15 Amp (Not Shown) Underhood Light (1991)
12. 12 - 15 Amp (Not Shown) Alt. Field (Explorer)

See also:
• COMPUTER RELEARN PROCEDURES