Ford Festiva. Instruction — part 103

Fig. 2: Compressing Band Apply Servo

Courtesy of FORD MOTOR CO.

DIFFERENTIAL OIL SEALS R & I

Removal

1. Raise and support vehicle. Drain transaxle fluid. Carefully raise staked portion of axle nut. Apply brakes and loosen, but DO NOT

remove, axle nut. Remove lower control arm ball joint clamp bolt. Pry downward on lower control arm to separate control arm from
knuckle.

2. Insert pry bar between transaxle case and axle flange. Carefully apply force to pry bar until axle circlip is disengaged. Slide knuckle

assembly off axle shaft, and remove axle from vehicle. Quickly install appropriate plug in transaxle. Using appropriate puller, remove
seal.

Installation

1. Apply lubrication to new seal. Using appropriate driver, install seal. Install new circlip on transaxle end of axle. Remove transaxle plug,

and carefully install axle into transaxle. Ensure circlip snaps into retaining groove.

2. Install axle into hub. Install NEW axle nut. Tighten bolts to specifications. See

TORQUE SPECIFICATIONS

. Stake NEW axle nut

with blunt nose chisel. To complete installation, reverse removal procedure. Fill transaxle fluid to correct level.

OIL COOLER FLUSHING

Contaminates MUST be removed from oil cooler before transmission is put back into service. Replace cooler supply tubes if leaking.
Thoroughly flush oil cooler and lines if a major service or transaxle removal has occurred. It is recommended that a mechanically agitated
cleaner, such as Rotunda (014-00028), be used.

VACUUM THROTTLE VALVE DIAPHRAGM (MODULATOR) R & I

Removal

1. Drain transaxle fluid. Disconnect vacuum hose from modulator. Unscrew modulator from transaxle. Remove control rod. With beveled

side out, insert Vacuum Diaphragm Rod Gauge (T87C-77000-A) into mounting hole until gauge bottoms out.

2. Place gauge rod through opening of gauge until rod bottoms out against vacuum throttle valve. Tighten lock knob on gauge and remove

tool. Using depth gauge, measure distance from flat surface of gauge to end of rod. See

Fig. 3

. Select proper length throttle valve rod.

See

THROTTLE VALVE ROD DIMENSION CHART

.

THROTTLE VALVE ROD DIMENSION CHART

Installation

Install selected throttle valve rod. Coat threads of modulator with appropriate sealant. To install, reverse removal procedures.

NOTE:

If replacing modulator, it is necessary to replace throttle control valve rod.

Measurement In. (mm)

Applicable Rod Length In. (mm)

1.0 (25.4)

1.16 (29.5)

1.0-1.02 (25.4-25.9)

1.18 (30.0)

1.02-1.04 (25.9-26.4)

1.20 (30.5)

1.04-1.06 (25.9-26.4)

1.22 (31.0)

1.06-1.08 (26.9-27.4)

1.24 (31.5)

Fig. 3: Identifying Vacuum Diaphragm Rod Gauge

Courtesy of FORD MOTOR CO.

VALVE BODY R & I

Removal & Installation

Disconnect battery ground cable. Raise and support vehicle. Remove front fender splash shield and front splash shield. Drain transaxle fluid.
Unbolt and remove oil pan. Remove 9 valve body bolts. Remove valve body. Ensure care is used not to loose check ball and detent spring. To
install, reverse removal procedure. Fill transaxle with fluid. Check for leaks.

TROUBLESHOOTING

PRELIMINARY INSPECTION

1. Ensure vehicle is thoroughly road tested to verify driver's complaint. Determine if problem occurs during upshift, downshift, coasting or

engagement. If noise is diagnosed, check if noise is affected by RPM, vehicle speed, gear selection or temperature. Ensure vehicle is at
normal operating temperature when checking.

2. Inspect fluid level and condition. Visually inspect for vehicle modifications, electronic add-ons, fluid leaks and/or incorrect linkage

adjustment. See applicable symptom diagnosis.

SYMPTOM DIAGNOSIS

Engine Starts in "D", "2", "1" OR "R", or will not Start in "N" OR "P"

Check ignition and starter circuit. Shift linkage faulty or installed improperly. Park/Neutral switch and/or wiring faulty.

No Movement In Any Gear

Incorrect fluid level. Shift linkage faulty or out of adjustment. Incorrect oil pressure. Instruction control valve faulty. Faulty oil pump. Leak in
hydraulic system. Parking linkage improperly adjusted.

No Movement In "D", Okay In Other Gears

Shift linkage faulty, out of adjustment or improperly installed. Incorrect oil pressure. Instruction control valve faulty. Faulty one-way clutch.

No Movement In "D", "2" Or "1", Okay In "R"

Incorrect fluid level. Shift linkage faulty, out of adjustment or incorrectly installed. Incorrect oil pressure. Instruction control valve faulty. Engine
performance poor or brakes improperly adjusted. Rear clutch faulty. Leak in hydraulic system.

No Movement In "R", Okay In Other Gears

Incorrect fluid level. Shift linkage faulty, out of adjustment or incorrectly installed. Incorrect oil pressure. Instruction control valve faulty. Faulty
rear clutch, front clutch or low-reverse brake. Leak in hydraulic system.

Slippage

ATF level incorrect or contaminated. Instruction valve out of adjustment. Vacuum modulator faulty or leak in vacuum circuit. Fluid pressures
incorrect. Oil pump faulty. Leak in hydraulic circuit.

Vehicle Creeps In "N" Position

Shift linkage faulty, out of adjustment or incorrectly installed. Instruction control valve faulty. Contaminated fluid. Faulty rear clutch.

Vehicle Creeps Excessively

Engine idle speed too high.

Vehicle Will Not Creep

Fluid level incorrect or fluid contaminated. Shift linkage faulty, out of adjustment or incorrectly installed. Engine idle too low. Instruction
control valve faulty. Faulty oil pump. Leak in hydraulic system. Faulty front or rear clutch.

Low Maximum Speed & Poor Acceleration

Incorrect ATF level or contaminated fluid. Selector linkage out of adjustment. Engine stall speed incorrect. Poor engine performance. Brake
band faulty or out of adjustment. Faulty low-reverse brake, front clutch, rear clutch or hydraulic circuit.

Harsh "N" To "D" Engagement

Engine idle too high. Leak in vacuum circuit. Incorrect oil pressure. Instruction control valve faulty. Faulty rear clutch. Low fluid level.

Harsh 1-2 Shift

Leak in vacuum circuit. Engine stall speed incorrect. Contaminated fluid. Instruction control valve faulty. Band servo faulty. Brake band damaged
or out of adjustment.

Harsh 2-3 Shift

Leak in vacuum circuit. Incorrect oil pressure. Instruction control valve faulty. Band servo or front clutch faulty. Brake band faulty.

Shift Shock Felt On Kickdown Downshift

Shift linkage damaged, out of adjustment or incorrectly installed. Leak in vacuum circuit. Kickdown solenoid, switch or wiring faulty.
Incorrect oil pressure. Instruction control valve or governor valve faulty. Leak in hydraulic system.

2-1 Shift Shock With Lever In "1" Position

Leak in vacuum circuit. Engine stall speed incorrect. Instruction control valve faulty. Contaminated fluid. Low-reverse brake faulty. Line pressure
high.

Shift Shock On Deceleration

Range selector out of adjustment. Vacuum diaphragm or piping faulty. Kickdown solenoid out of adjustment or faulty. Excessive line pressure.
Instruction valve faulty. Governor valve faulty.

Vehicle Brakes In "R" Position

Band servo faulty. Contaminated fluid. Faulty rear clutch. Brake band damaged or out of adjustment. Parking linkage damaged or improperly
adjusted.

Vehicle Brakes On 1-2 Shift

Instruction control valve faulty. Contaminated fluid. Front clutch or low-reverse brake faulty. One-way clutch faulty.

Vehicle Brakes On 2-3 Shift

Instruction control valve faulty. Band servo faulty. Contaminated fluid. Brake band out of adjustment or damaged.

No Engine Braking In "1" Position

Shift linkage damaged, out of adjustment or installed incorrectly. Incorrect oil pressure. Instruction control valve faulty. Contaminated fluid.
Low-reverse brake faulty. Leak in hydraulic system.

No Shift Shock; Slippage On 1-2 Shift

Incorrect fluid level. Shift linkage damaged, out of adjustment or incorrectly installed. Leak in vacuum circuit. Oil pressure incorrect. Instruction
control valve faulty. Band servo faulty. Contaminated fluid. Brake band faulty. Leakage in hydraulic system.

No Shift Shock; Slippage When Instructionly Shifted From "1" To "2" Position

Incorrect fluid level. Shift linkage damaged, out of adjustment or installed incorrectly. Leak in vacuum circuit. Engine idle speed incorrect.
Engine stall speed incorrect. Instruction control valve faulty. Contaminated fluid. Brake band out of adjustment or damaged. Oil pump faulty.

No Shift Shock; Slippage On 2-3 Shift

ATF contaminated or level incorrect. Shift linkage faulty. Vacuum modulator faulty or leak in vacuum circuit. Line pressure not correct. Band
servo faulty. Front clutch faulty. Leak in hydraulic system.

Slippage On 3-2 Kickdown

Leak in vacuum circuit. Oil pressure incorrect. Instruction valve faulty. Band servo faulty. Contaminated fluid. Front clutch faulty. Brake band
out of adjustment or damaged. Leak in hydraulic system.

Transaxle Slips In 1st Gear

Incorrect fluid level. Shift linkage faulty, out of adjustment or incorrectly installed. Incorrect oil pressure. Instruction control valve faulty.
Contaminated fluid. Incorrect idle speed. Faulty kickdown solenoid, switch or wiring.

No 1-2 Shift

Shift linkage defective, out of adjustment or incorrectly installed. Leak in vacuum circuit. Faulty kickdown solenoid, switch or wiring.
Contaminated fluid. Instruction control valve faulty. Governor valve faulty. Band servo faulty. Brake band out of adjustment. Leak in hydraulic
system. Rear clutch faulty.

No 2-3 Shift

Shift linkage defective, out of adjustment or incorrectly installed. Leak in vacuum circuit. Faulty kickdown solenoid, switch or wiring.
Contaminated fluid. Instruction control valve, governor valve or band servo faulty. Leak in hydraulic system. Front clutch faulty.

No Lock-Up

Faulty torque converter, wiring or solenoid.

1-3 Shift; Skips 2nd

Contaminated fluid. Brake band out of adjustment or damaged. Leak in hydraulic system.

No 3-2 Downshift

Leak in vacuum circuit. Instruction control valve, governor valve or band servo faulty. Contaminated fluid. Faulty front clutch. Brake band out of
adjustment of damaged. Leak in hydraulic system.

No 2-1 or 3-1 Downshift

Leak in vacuum circuit. Instruction control valve, governor valve or band servo faulty. Contaminated fluid. Brake band out of adjustment or
damaged. One-way clutch faulty.

Slippage When Accelerating In 3rd Gear Above Kickdown Speed

Shift linkage damaged, out of adjustment or installed incorrectly. Leak in vacuum circuit. Oil pressure incorrect. Instruction control valve or
governor valve faulty. Contaminated fluid. Front clutch faulty. Leak in hydraulic system.

No Kickdown At Normal Speeds In 3rd Gear

Leak in vacuum circuit. Kickdown solenoid, switch or wiring faulty. Instruction control valve or governor valve faulty. Contaminated fluid. Brake
band out of adjustment or damaged. Leak in hydraulic system.

1-2 & 2-3 Shift Points Too High

ATF contaminated or level incorrect. Vacuum modulator faulty or leak in vacuum circuit. Line pressures incorrect. Instruction valve out of
adjustment. Governor valve faulty. Hydraulic circuit leaking.

3-2 & 2-1 Shift Points Too High

Shift linkage damaged, out of adjustment or incorrectly installed. Kickdown solenoid, switch or wiring faulty. Leak in vacuum circuit.
Incorrect oil pressure. Instruction control valve or governor valve faulty. Leak in hydraulic system.

1-2 Or 2-3 Shifts With Shift Lever In "1" Position

Shift linkage damaged, out of adjustment or installed incorrectly. Instruction control valve faulty. Leak in hydraulic system.

2-1 or 2-3 Shifts With Shift Lever In "2" Position

Shift linkage damaged, out of adjustment or installed incorrectly. Incorrect oil pressure. Instruction control valve faulty.

Vehicle Moves In "P" Or Parking Gear Remains Engaged When

Shifted Out Of "P" Position

Shift linkage damaged, out of adjustment or incorrectly installed. Parking linkage out of adjustment or damaged.

Transaxle Noisy In "P" Or "N" Position

Incorrect fluid level. Incorrect oil pressure. Faulty rear clutch, oil pump, one-way clutch or planetary gear.

Transaxle Noisy In "D", "1", "2" or "R"

Oil pressure incorrect. Rear clutch, oil pump, one-way clutch or planetary gears faulty.

Transmission Overheats

ATF level incorrect. Engine stall speed and/or line pressure incorrect. Faulty band servo, front clutch, rear clutch, brake band, low-reverse
brake, oil pump, torque converter or planetary gear. Leak in hydraulic circuit.