Ford Festiva. Manual — part 38

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K - SENSOR RANGE CHARTS

1991 ENGINE PERFORMANCE Ford Motor Co. Sensor Operating Range Charts

INTRODUCTION

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble
code, but it may cause driveability problems.

BAROMETRIC PRESSURE SENSOR OUTPUT VOLTAGE

ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE

IGNITION DIAGNOSTIC MONITOR VOLTAGE

THROTTLE POSITION SENSOR RESISTANCE

(1)

VANE AIRFLOW METER VOLTAGE

NOTE:

Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter
(DVOM) with a minimum 10-megohm input impedance.

Vacuum In. Hg.

(1)

Volts

0

3.84

5

3.36

10

2.66

15

1.93

20

1.26

25

.58

(1)

Voltage may vary by plus or minus 15 percent.

Temperature °F (°C)

Ohms

-4 (-20)

14,600-17,800

68 (20)

2200-2700

104 (40)

1000-1300

140 (60)

500-650

176 (80)

290-350

RPM

(1)

Volts

500

1.103

1000

1.257

1500

1.542

2000

1.768

2500

2.06

3000

2.15

3500

2.26

4000

2.50

4500

2.47

5000

2.40

(1)

Revolutions per minute.

Throttle Opening

(2)

Ohms

1/8

989

1/4

1104

3/8

1278

1/2

1462

5/8

1480

3/4

1459

7/8

1144

Fully Open

1072

(1)

Capri only. Festiva uses throttle position switch.

(2)

Resistance may vary by plus or minus 15 percent.

Door Opening

(1)

Volts (Capri)

(1)

Volts (Festiva)

Fully Closed

(2)

.5-1.5

1/8

3.24

.59

1/4

5.60

1.19

3/8

5.62

1.78

1/2

5.83

2.38

5/8

6.02

2.97

3/4

6.57

3.56

7/8

7.46

4.16

Fully Open

7.87

4.5-5.0

VANE AIR TEMPERATURE RESISTANCE

(1)

(1)

Voltage may vary by plus or minus 15 percent.

(2)

Voltage specification is not available.

Temperature °F (°C)

Ohms

-4 (-20)

15,000

32 (0)

5200

68 (20)

2500

104 (40)

1100

140 (60)

600

176 (80)

300

(1)

Resistance may vary by plus or minus 15 percent.

Copyright 2009 Mitchell Repair Information Company, LLC. All Rights Reserved.

Article GUID: A00022702

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1991 ENGINE PERFORMANCE

Fuel Pressure Specifications

FUEL SYSTEMS

FUEL PRESSURE

1991 FUEL PRESSURE SPECIFICATIONS (EEC-IV - CARS)

1991 FUEL PRESSURE SPECIFICATIONS (EEC-IV - TRUCKS)

1991 FUEL PRESSURE SPECIFICATIONS (EEC - CARS)

Engine

KOER psi (kg/cm

2

)

KOEO psi (kg/cm

2

)

2.3L HSC EFI SEFI

45-60 (3.2-4.2)

50-60 (3.5-4.2)

3.0L SHO SEFI

28-33 (2.0-2.3)

30-45 (2.1-3.2)

3.8L SC SEFI

30-40 (2.1-2.8)

35-40 (2.5-2.8)

All Others

30-45 (2.1-3.2)

35-40 (2.5-2.8)

Engine

KOER psi (kg/cm

2

)

KOEO psi (kg/cm

2

)

4.9L EFI

45-60 (3.2-4.2)

50-60 (3.5-4.2)

All Others

30-45 (2.1-3.2)

35-45 (2.5-3.2)

Engine

KOER psi (kg/cm

2

)

KOEO psi (kg/cm

2

)

1.3L

25-31 (1.8-2.2)

64-85 (4.5-6.0)

1.6L

28-31 (2.0-2.2)

64-85 (4.5-6.0)

1.8L

(1)

64-85 (4.5-6.0)

2.2L

27-33 (1.9-2.3)

64-85 (4.5-6.0)

2.2L Turbo

27-33 (1.9-2.3)

64-85 (4.5-6.0)

(1)

Fuel pressure should be 30-37 psi (2.1-2.6 kg/cm

2

) with engine running and vacuum hose connected to fuel pressure regulator.

Fuel pressure should be 38-45 psi (2.7-3.2 kg/cm

2

) with engine running and vacuum hose disconnected to fuel pressure regulator.

Copyright 2009 Mitchell Repair Information Company, LLC. All Rights Reserved.

Article GUID: A00123317

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C - SPECIFICATIONS

1991 ENGINE PERFORMANCE Ford/Mercury - Service & Adjustment Specifications

INTRODUCTION

Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This is a quick-reference article to use when you
are familiar with an adjustment procedure and only need a specification.

CAPACITIES

BATTERY SPECIFICATIONS

FLUID CAPACITIES

FLUID CAPACITIES

QUICK-SERVICE

SERVICE INTERVALS & SPECIFICATIONS

REPLACEMENT INTERVALS

BELT ADJUSTMENTS

(1)

BELT ADJUSTMENTS

(1)

MECHANICAL CHECKS

ENGINE COMPRESSION

Check engine compression at specified cranking speed with engine at normal operating temperature, all spark plugs removed and throttle wide
open.

COMPRESSION SPECIFICATIONS

Application

Amp Hr. Rating

1.3L & 1.6L

50

Application

Qts. (L)

Crankcase (Includes Filter)

3.6 (3.4)

Cooling System (Includes Heater)

5.3 (5.0)

Manual Transaxle (Mercon)

2.6 (2.5)

Automatic Transaxle (Mercon)

6.0 (5.7)

Application

Qts. (L)

Crankcase (Includes Filter)

Non-Turbo

3.5 (3.3)

Turbo

3.7 (3.5)

Cooling System (Includes Heater)

Non-Turbo

5.3 (5.0)

Turbo

6.3 (6.0)

Manual Transaxle (Mercon)

3.4 (3.2)

Automatic Transaxle (Mercon)

6.0 (5.7)

Component

Interval (Miles)

Air Filter

30,000

Camshaft Timing Belt

60,000

Coolant

30,000

Oil & Filter

3000

Spark Plugs

30,000

Application

New Belt

Used Belt

A/C Belt

110-125 (50-57)

92-110 (42-50)

Alternator Belt

110-132 (50-60)

95-110 (43-50)

(1)

Tension in Lbs. (Kg) Using Strand Tension Gauge

Application

New Belt

Used Belt

A/C Belt

110-132 (50-60)

110-132 (50-60)

Alternator Belt

110-132 (50-60)

110-132 (50-60)

(1)

Tension in Lbs. (Kg) Using Strand Tension Gauge.

Application

Specification

Compression Ratio

1.3L

9.7:1

1.6L

(1)

Compression Pressure

(2)