1991 FORD FESTIVA check engine

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A/C SYST EM PRECAUT IONS
A/C GENERAL SERVICING A/C System Servicing cautions
BEFORE OPENING THE SYSTEM
Before disconnecting any lines or fittings, the system must be completely discharged using approved refrigerant recovery/recycling equipment.
DISCHARGING A/C SYSTEM
1. Remove service valve caps and install gauges. For high side gauge hose, Adapter (D81L-19703-A) must be used to connect to high side
service valve.
2. Place open end of center hose in garage exhaust outlet or in a well ventilated area. Slightly open low side gauge valve and let refrigerant
escape slowly without loosing refrigerant oil.
3. When system is nearly discharged, using approved refrigerant recovery/recycling equipment, open high side gauge valve to release any
pressure trapped in compressor. Close valves immediately after discharging to prevent entry of moisture.
DISCONNECTING LINES & FITTINGS
1. After system is discharged, using approved refrigerant recovery/recycling equipment, carefully clean entire area around coupling nut to
prevent dirt entering system. Always use two wrenches to avoid twisting or distorting lines and fittings (hold fitting with one wrench
while loosening coupling nut with second wrench).
2. Ford spring-coupling fittings require a special coupling tool (Motorcraft YT-1056) to open or close. See procedure under Connecting
Lines and Fittings.
3. Cap or plug all LINES and FITTINGS immediately to prevent entry of air and moisture into system. Do not remove these caps until
connections are being made.
COMPONENT REPLACEMENT
When components are replaced, system oil level must be adjusted. Add refrigeration oil to replacement component. See Compressor oil Check
article, as well as COMPONENT OIL REPLACEMENT QUANTITIES chart under A/C SYSTEM SPECS article in this section.
USING R-12 REFRIGERANT - SAFETY PRECAUTIONS
1. Always work in a well-ventilated, clean area. Refrigerant (R-12) is heavier than oxygen, and will displace oxygen in a confined area.
Always wear eye protection when working around air conditioning systems and R-12. The system's high pressure can cause severe injury
to eyes and skin if a hose were to burst. R-12 evaporates quickly when exposed to atmosphere, freezing anything it contacts.
2. Use care when handling refrigerant containers. DO NOT drop or strike containers or expose refrigerant containers to excessive heat.
Containers must never be heated more than 125°F (52°C). Never expose R-12 directly to open flame.
USING INDIVIDUAL R-12 CANS
Disposable refrigerant cans (referred to as one pound cans) have a flat type seal or a screw type seal, and proper can tap must be used for each
type. Be sure sealing gasket on can tap is in good condition. A proper safety can tap will prevent refrigerant from flowing back into open can,
as tap has a one-way flow control.
MULTI-CAN DISPENSING VALVES
A multi-can dispensing valve allows attachment of several cans of refrigerant, and is a good substitute when a bulk container is not available.
Cans are installed onto each leg of multi-can dispensing valve in the same manner as the individual cans, and each leg has its own can tap.
CAN TAP INSTALLATION FLAT TYPE SEAL CANS
On cam-lock or one-piece can taps, first turn the handle outward to the fully open position. Securely engage locking lugs over the can flange,
and lock them in place by turning cam lock or locking nut. Screw tap assembly into adapter so sealing gasket is fully seated against the can
top. Turn tap inward to pierce the can and close the tap. DO NOT open tap until ready to purge the service hose or dispense refrigerant into
the system.
On 2-piece can taps, be certain tap handle is turned fully inward to the closed position. Check that locking base is turned to its outer limit.
Securely engage locking lugs over the can flange. Turn entire tap assembly (without disturbing the closed setting) downward into the locking
base to pierce the can. DO NOT open tap until ready to dispense into system. CAUT ION: When discharging air conditioning system , use only approved refrigerant recovery/recycling
equipm ent. Make every attem pt to avoid discharging refrigerant into the atm osphere.
NOTE:Recent findings by the EPA indicate that R-11, R-12 and R-113 are harm ful to the Earths' protective
Ozone layer. Make every attem pt possible, to avoid discharging R-11, R-12 or R-113 into the
atm osphere.
CAUT ION: When R-12 is exposed to an open flam e, drawn into a running engine, or detected with a Halide
(propane) leak tester, poisonous phosgene gas is form ed. Keep work areas ventilated and avoid
running engines near work area.
NOTE:Recent findings by the EPA indicate that refrigerant is harm ful to the Earth's protective Ozone layer.
When discharging refrigerant avoid allowing refrigerant to enter the atm osphere. Refrigerant recovery
system should be used when discharging the system .
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tube from evaporator core fins while removing thermostatic switch. To install, reverse removal procedure. Evacuate and recharge system.
THERMOSTATIC EXPANSION VALVE
Removal & Installation
1. Discharge A/C system using approved refrigerant recovery/recycling equipment. Remove evaporator housing. See EVAPORATOR
HOUSING under REMOVAL & INSTALLATION. Remove air inlet duct. See Fig. 1 .
2. Remove insulation from sensing bulb. Disconnect thermostatic expansion valve at evaporator tube fitting and inlet tube fitting (from
receiver-drier). See Fig. 3
. Remove thermostatic expansion valve. To install, reverse removal procedure. Use new "O" rings. Evacuate
and recharge system.
A/C RELAYS
Removal & Installation
A/C relays are located in left front corner of engine compartment, near battery. Unclip relay holder from its mounting bracket. Disconnect
relay wiring. DO NOT pull on wiring connector to remove relay from holder. Remove relay from holder. To install, reverse removal procedure.
A/C-HEATER CONTROL ASSEMBLY
Removal & Installation
1. A/C control module is located above radio. Remove accessory bezel. Remove radio (if necessary) and glove box. Disconnect
recirculated/fresh air cable from door lever. See Fig. 5
. Disconnect mode select cable from door lever. See Fig. 6 .
2. Disconnect temperature control cable from door lever. See Fig. 4
. Pull control assembly away from dash, and disconnect wiring
connectors. Remove control assembly.
3. To install, reverse removal procedure. Check and adjust temperature control, recirculated/fresh air and mode cables. See
ADJUSTMENTS. Test control assembly operation.
BLOWER MOTOR
Removal & Installation
Disconnect negative battery cable. Remove A/C air outlet duct located below steering column. See Fig. 2 . Disconnect blower motor wiring.
Remove blower motor attaching screws and blower motor. Remove blower wheel attaching nut. Remove blower wheel and washer. To install,
reverse removal procedure.
BLOWER MOTOR RESISTOR
Removal & Installation
Disconnect negative battery cable. Remove air duct located below steering column. See Fig. 2 . Disconnect blower motor resistor wiring.
Remove blower resistor attaching screws and resistor. To install, reverse removal procedure.
AIR DISTRIBUTION PLENUM
Removal & Installation
1. Remove instrument panel. See INSTRUMENT PANEL under REMOVAL & INSTALLATION. Drain cooling system. Disconnect
heater hoses in engine compartment. Disconnect wiring for blower motor and blower resistor. Disengage wiring harness and antenna
lead from bracket on front of air distribution housing.
2. Loosen connector duct-to-air inlet clamp screw. Remove upper and lower mounting nuts from plenum. Disengage and remove plenum
from defroster ducts. To install, reverse removal procedure. Refill cooling system, and check for leaks.
HEATER CORE
Removal & Installation
1. Remove air distribution plenum. See AIR DISTRIBUTION PLENUM under REMOVAL & INSTALLATION. Disconnect linkage
connecting defroster doors. Remove attaching screw located near blower resistor. Turn housing around and remove attaching screw
located near blower motor opening.
2. Remove clips retaining blower housing halves. Separate blower housing halves. Remove heater core. Remove tube insert from heater
core. To install, reverse removal procedure. Test system for proper operation.
INSTRUMENT PANEL
Removal & Installation
1. Disconnect negative battery cable. Remove steering wheel, steering column covers and multifunction switch assembly. Disconnect
electrical connectors from switches on instrument panel. Remove instrument cluster hood.
2. Disconnect speedometer cable from transmission. Remove 4 instrument cluster screws. Pull instrument cluster out from instrument
panel cluster enough to disconnect wiring and speedometer cable. Remove instrument cluster.
3. Remove steering column shield. Remove shield bracket. Remove glove box. Remove fuse panel cover and 4 fuse panel screws. Pull fu se
panel out, but DO NOT remove. Remove shift lever console and mount brackets. CAUTION: DO NOT rem ove screw in front of blower resistor, or blower resistor m ounting plate will fall into air
distribution plenum . T o retrieve plate, disassem ble instrum ent panel.
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1971-96 MAINT ENANCE & SERVICE INFORMAT ION
Interference Verification Check For OHC Engine - T im ing Belt Inform ation
TIMING BELT INTERFERENCE VERIFICATION INFORMATION
TIMING BELT INTERFERENCE CAUTION
Crack Or Tears In Belt Surface
Missing, Damaged, Cracked Or Rounded Teeth
Oil Contamination
Damaged Or Faulty Tensioners
Incorrect Tension Adjustment
TIMING BELT REPLACEMENT INTERVAL & INTERFERENCE VERIFICATION
TIMING BELT REPLACEMENT INTERVAL & INTERFERENCE VERIFICATION (FORD PASSENGER CARS)
(1)
TIMING BELT REPLACEMENT INTERVAL & INTERFERENCE VERIFICATION (MERCURY PASSENGER CARS)
(1) CAUT ION: T he condition of cam shaft tim ing belts should always be checked on vehicles which have m ore than
50,000 m iles. Although som e m anufacturers do not recom m end replacem ent at a specified m ileage,
others require it at 60,000-100,000 m iles. A cam shaft drive belt failure m ay cause extensive dam age to
internal engine com ponents on m ost engines, although som e designs do not allow piston-to-valve
contact. T hese designs are often called "Free Wheeling". Many m anufacturers changed their
m aintenance and warranty schedules in the m id-1980's to reflect tim ing belt inspection and/or
replacem ent at 50,000-60,000 m iles. Most service interval schedules shown in this section reflect these
changes. Belts or com ponents should be inspected and replaced if any of the following conditions
exist:
ApplicationYear SpanEngineReplacement Interval (Miles)
Aspire1994-961.3L 4-Cyl.60,000
Contour1995-962.0L 4-Cyl.60,000
Escort1981-851.6L 4-Cyl.60,000
Escort1985-961.9L 4-Cyl.60,000
Escort1984-87(2) 2.0L 4-Cyl. Diesel(4) 100,000
Escort1991-961.8L 4-Cyl.60,000
EXP1981-851.6L 4-Cyl.60,000
EXP1985-961.9L 4-Cyl.60,000
Fairmont1978-832.3L 4-Cyl.(3) 60,000
Festiva1988-931.3L 4-Cyl.60,000
Granada1981-822.3L 4-Cyl.(3) 60,000
LTD1983-862.3L 4-Cyl.(3) 60,000
Mustang1974-932.3L 4-Cyl.(3) 60,000
Pinto1971-742.0L 4-Cyl.(3) 60,000
Pinto1974-802.3L 4-Cyl.(3) 60,000
Probe1989-92(2) 2.2L 4-Cyl.60,000
Probe1993-96(2) 2.0L 4-Cyl.60,000
Probe1993-962.5L V660,000
Taurus SHO1989-953.0L V6100,000
Taurus SHO1993-953.2L V6100,000
Tempo1984-87(2) 2.0L 4-Cyl. Diesel(4) 100,000
Thunderbird1983-882.3L 4-Cyl.(3) 60,000
(1)Other interference engine applications may exist which are not indicated here.
(2)Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure.
(3)Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers
suggest the belt be replaced at 60,000 mile intervals.
(4)Vehicle manufacturer recommends replacing all belts at the same time.
ApplicationYear SpanEngineReplacement Interval (Miles)
Bobcat1974-802.3L 4-Cyl.(3) 60,000
Capri1971-721.6L 4-Cyl.(3) 60,000
Capri1971-742.0L 4-Cyl.(3) 60,000
Capri1974-842.3L 4-Cyl.(3) 60,000
Capri1991-941.6L 4-Cyl.60,000
Cougar1984-862.3L 4-Cyl.(3) 60,000
LN71981-85(2) 1.6L 4-Cyl.(3) 60,000
Lynx1981-85(2) 1.6L 4-Cyl.(3) 60,000
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TIMING BELT REPLACEMENT INTERVAL & INTERFERENCE VERIFICATION (LIGHT TRUCKS) (1)
Lynx1984-871.9L 4-Cyl.(3) 60,000
Lynx1984-872.0L 4-Cyl. Diesel(4) 100,000
Marquis1983-862.3L 4-Cyl.(3) 60,000
Mystique1995-962.0L 4-Cyl.60,000
Topaz1984-86(2) 2.0L 4-Cyl. Diesel(4) 100,000
Tracer1987-901.6L 4-Cyl.60,000
Tracer1991-961.8L 4-Cyl.60,000
Tracer1991-961.9L 4-Cyl.60,000
Tracer (Canadian)1987, 19901.6L 4-Cyl.(3) 60,000
Zephyr1978-832.3L 4-Cyl.(3) 60,000
Villager1993-96(2) 3.0L V6105,000
(1)Other interference engine applications may exist which are not indicated here.
(2)Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure.
(3)Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers
suggest the belt be replaced at 60,000 mile intervals.
(4)Vehicle manufacturer recommends replacing all belts at the same time.
ApplicationYear SpanEngineReplacement Interval (Miles)
Aerostar1986-872.3L 4-Cyl.(3) 60,000
Courier1977-822.3L 4-Cyl.(3) 60,000
Ranger1986-882.0L 4-Cyl.60,000
Ranger1983-962.3L 4-Cyl.(3) 60,000
Ranger1985-87(2) 2.3L 4-Cyl. Diesel(3) (4) 60,000
(1)Other interference engine applications may exist which are not indicated here.
(2)Interference engine. Check for possible damage to piston(s) or valve(s) if there has been a timing belt failure.
(3)Although the vehicle manufacturer does not recommend a specific scheduled maintenance interval, aftermarket belt manufacturers
suggest the belt be replaced at 60,000 mile intervals.
(4)Vehicle manufacturer recommends replacing all belts at the same time.
Copyr ight 2009 Mitchell Repair Information Company, LLC. All Rights Reserved.
Article GUID: A00062912
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Driven More Than 10 Miles Daily
No Operating Conditions From Severe Service Schedule
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-va l ve
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:
Cracks Or Tears In Belt Surface
Missing, Damaged, Cracked Or Rounded Teeth
Oil Contamination
Damaged Or Faulty Tensioners
Incorrect Tension Adjustment
Replace camshaft timing belt every 60,000 miles.
COOLING SYSTEM
Replace engine coolant every 36 months or 30,000 miles. Check condition of hoses and clamps every 12 months or 15,000 miles, whichever
comes first. Replace hoses and clamps if necessary.
SERVICE POINT LOCATIONS

Fig. 2: Engine Service Point Locations (1988
-89 1.3L 2V Carb.)
Courtesy of FORD MOTOR CO. CAUT ION: Failure to replace a faulty cam shaft tim ing belt m ay result in serious engine dam age.
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whichever occurs first.
POWERTRAIN WARRANTY
Under this warranty, certain parts of the engine, transmission, axle and driveline are warranted against defects in materials and workmanship
for either 4 years/50,000 or 6 years/60,000 miles, depending on the model year. 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. 1992-93 models are covered for 6 years or 100,000
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 co vered .
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.
FUSES & FUSIBLE LINKS
FUSE PANEL & FUSIBLE LINK BLOCK LOCATIONS
The vehicle has a fuse block with fusible links and a fuse panel with circuit fuses. The fuse panel is located behind the instrument panel, left o
f
the steering column. The fuse block is located under the hood.
FUSE PANEL IDENTIFICATION NOTE:Powertrain Warranty varies in coverage length (4 years/50,000 m iles or 6 years/60,000 m iles) depending
on model year.
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SERVICE INDICATOR & WARNING LIGHTS
1988-92 MAINT ENANCE Ford Motor Co. Service Indicator & Warning Lights
SERVICE INDICATOR & WARNING LIGHTS

Fig. 1: Identifying Dash Gauges & W arning Lights

Courtesy of FORD MOTOR CO.
CHECK ENGINE WARNING LIGHT
If functioning properly, the Check Engine warning light comes on when ignition switch is in the ON position and goes out after engine is
started. If light fails to glow with ignition on or remains on when engine is running, a malfunction exists in the electronic engine control
system. System needs to be checked and serviced.
CHARGING SYSTEM WARNING LIGHT
Light comes on when ignition switch is in the ON or START position and goes out after engine is started and alternator is charged. Light may
also glow when there is a heavy electrical load on the system. If light remains on after reducing electrical load, check electrical system.
OIL PRESSURE WARNING LIGHT
Light should come on briefly and go out after engine is started. If light remains on with engine running, oil pressure is low. Check oil level.
ENGINE COOLANT TEMPERATURE GAUGE
Gauge should register within the NORMAL band under regular operating conditions. If gauge rises into the HOT range, stop engine, allow it to
cool, and then check coolant level.
BRAKE WARNING LIGHT
The Brake light indicates one of 2 conditions: parking brake is engaged, or malfunction exists in the dual braking system. If functioning
properly, light should come on briefly with ignition switch in the ON position and then go out after engine is started and parking brake is
released. If light remains on, a malfunction is indicated. Service brake system.
Copyr ight 2009 Mitchell Repair Information Company, LLC. All Rights Reserved.
Article GUID: A00062872
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ST EERING SYST EM - POWER
1991-92 ST EERING Ford Motor Co. - Steering - Power Rack & Pinion
DESCRIPTION & OPERATION
Power steering system consists of a rack and pinion steering gear, valve body, power steering pump, fluid reservoir and interconnecting
hydraulic lines. Pressure and return lines from pump are connected to valve body. A vane-type power steering pump draws fluid from the
steering reservoir. Fluid is compressed by rotor and vanes inside steering pump and sent to steering gear. Pressure is monitored and controlled
by a pressure switch and a control valve located inside of steering pump.
TROUBLE SHOOTING
Refer to TROUBLE SHOOTING - BASIC PROCEDURES article in the GENERAL TROUBLE SHOOTING section.
LUBRICATION
CAPACITY
Information is not available.
FLUID TYPE
Use Dexron-II ATF type fluid.
FLUID LEVEL CHECK
Check fluid level before engine is started, while fluid is still cool. Remove reservoir cap fluid indicator on steering pump. Check fluid level.
Fluid should be between the "L" and "H" marks on the level gauge dipstick. If fluid is needed, fill to the "L" mark on dipstick. Run engine until
warm and turn steering wheel fully in both directions about 10 times. Return steering to straight-ahead position and shut engine off. Ensure
fluid level is between "L" and "H" marks. Add fluid if necessary.
HYDRAULIC FLUID BLEEDING
1. Raise and support front of vehicle. Ensure pump reservoir is filled to specified level. With ignition coil wire disconnected, crank engine
and add fluid to steering pump until fluid level remains constant. While cranking engine, rotate steering from stop to stop. Recheck and
add fluid as necessary.
2. Start engine and allow to idle for several minutes. Turn steering wheel completely lock-to-lock several times. Check fluid level. Add
fluid as necessary. Continue this procedure until there is no bubbling or decrease in fluid level.
ADJUSTMENTS
BELT TENSION
On Festiva, remove air duct and air cleaner. On all models, loosen steering pump mounting pivot bolt and the adjusting bolt lock nut. Using
Belt Tension Gauge (021-0028A), fit gauge to longest available belt span for testing. Adjust belt to specification. See BELT TENSION
SPECIFICATIONS . Tighten adjuster lock nut to 32-45 ft. lbs. (43-61 N.m) on Capri or 27-38 ft. lbs. (37-52 N.m) on Festiva.
BELT TENSION SPECIFICATIONS
REMOVAL & INSTALLATION
STEERING GEAR
Removal
1. Disconnect negative battery cable. On Capri, mark and loosen intermediate lower U-joint. On Festiva, mark and remove steering gear
intermediate shaft connecting steering gear to column shaft. On all models, disconnect high pressure and return lines and plug them.
Loosen front wheel lug nuts.
2. Raise vehicle. Remove front wheels. Remove tie rod end cotter pins and nuts. Separate tie rod ends from steering knuckles using Tie
Rod Remover (T85M-3395-A). Remove tie rod end splash shields. Remove right fender splash shield. Remove front catalytic converter
nuts and separate converter from inlet pipe.
3. Place reference marks on tie rod end and tie rod for reassembly reference. Loosen tie rod jam nut and remove right tie rod end. Remove
steering gear mounting bolts and washers. Slide steering gear to the left and pull right tie rod through fender opening. Remove steering
gear by sliding it to the right.
Installation
Application
(1) Deflection: In.
(mm)Gauge Tension:
Lbs. (kg)
New Belt
Capri & Festiva.31-.35 (8-9)110-132 (50-60)
Used Belt
Capri.31-.35 (8-9)110-132 (50-60)
Festiva.35-.39 (9-10)95-110 (43-50)
(1)Apply approximately 22 lbs. (9.9 kg) of pressure.
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