Engine Controls - Sensor Operating Range Charts — Ford Crown Victoria I (1992-1997)

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. To determine correct engine control system, see SYSTEM APPLICATION table.

Application	System
1.8L & 2.5L	EEC
Cougar 4.6L, Mustang 3.8L & Thunderbird 4.6L	EEC-V
All Others	EEC-IV

SYSTEM APPLICATION

Note. Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. For sensor testing procedures, see appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section below.

«TESTS W/CODES - EEC 1.8L»(ref-22878) (for Escort & Tracer)
«TESTS W/CODES - EEC-IV (1.9L)»(ref-22879) (for Escort & Tracer)
«TESTS W/CODES - EEC-IV (2.0L)»(ref-22880) (for Probe)
«TESTS W/CODES - EEC-IV (2.3L)»(ref-22881) (for Tempo & Topaz)
«TESTS W/CODES - EEC 2.5L»(ref-22894) (for Probe)
«TESTS W/CODES - EEC-IV (3.0L)»(ref-22895) (for Sable, Taurus, Tempo & Topaz)
«TESTS W/CODES - EEC-IV (3.2L SHO)»(ref-22896) (for Taurus)
«TESTS W/CODES - EEC-IV (3.8L)»(ref-22897) (for Continental, Cougar, Mustang, Sable, Taurus & Thunderbird)
«TESTS W/CODES - EEC-V (3.8L)»(ref-22898) (for Mustang)
«TESTS W/CODES - EEC-V (4.6L)»(ref-22907) (for Cougar & Thunderbird)
«TESTS W/CODES - EEC-IV (4.6L)»(/ford/crown-victoria/i-1992-1997/remont/testing-diagnostics/#engine-controls-tests-wcodes-eec-iv-46l) (all other 4.6L)
«TESTS W/CODES - EEC-IV (5.0L)»(ref-22906) (for Mustang)

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

Temperature °F (°C)	Ohms
68 (20)	2200-2700
104 (40)	1000-1300
140 (60)	500-650
176 (80)	250-350

ECT SENSOR SPECIFICATIONS

EXHAUST GAS RECIRCULATION TEMPERATURE (EGRT) SENSOR

Temperature °F (°C)	Ohms
68 (20)	182,000-336,000
85 (30)	112,000-165,000
105 (41)	41,300-47,600
125 (52)	7500-10,500

EGRT SENSOR SPECIFICATIONS

EGR VALVE POSITION (EVP) SENSOR

Vacuum (In. Hg)	(2) Volts
0	0.8
6	5.0
(1) Measure between Red/Black and Black/Blue wires. (2) Voltage value is approximate.

(1)	Measure between Red/Black and Black/Blue wires.

(2)	Voltage value is approximate.

EVP SENSOR SPECIFICATIONS (1)

OXYGEN SENSOR

Condition	Volts
Acceleration	0.5-1.0
Deceleration	0-0.5
Idle (Cold)	0
Idle (Warm)	0-1

O2S SPECIFICATIONS

INTAKE AIR TEMPERATURE (IAT) SENSOR

Temperature °F (°C)	Ohms
32 (0)	4000-7000
68 (20)	2000-3000
104 (40)	900-1300
140 (60)	400-700
(1) See appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section following this table for terminal identification.

(1)	See appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section following this table for terminal identification.

IAT SENSOR SPECIFICATIONS (1)

«TESTS W/CODES - EEC 1.8L»(ref-22878) (for Escort & Tracer)
«TESTS W/CODES - EEC-IV (1.9L)»(ref-22879) (for Escort & Tracer)
«TESTS W/CODES - EEC-IV (2.0L)»(ref-22880) (for Probe)
«TESTS W/CODES - EEC-IV (2.3L)»(ref-22881) (for Tempo & Topaz)
«TESTS W/CODES - EEC 2.5L»(ref-22894) (for Probe)
«TESTS W/CODES - EEC-IV (3.0L)»(ref-22895) (for Sable, Taurus, Tempo & Topaz)
«TESTS W/CODES - EEC-IV (3.2L SHO)»(ref-22896) (for Taurus)
«TESTS W/CODES - EEC-IV (3.8L)»(ref-22897) (for Continental, Cougar, Mustang, Sable, Taurus & Thunderbird)
«TESTS W/CODES - EEC-V (3.8L)»(ref-22898) (for Mustang)
«TESTS W/CODES - EEC-V (4.6L)»(ref-22907) (for Cougar & Thunderbird)
«TESTS W/CODES - EEC-IV (4.6L)»(/ford/crown-victoria/i-1992-1997/remont/testing-diagnostics/#engine-controls-tests-wcodes-eec-iv-46l) (all other 4.6L)
«TESTS W/CODES - EEC-IV (5.0L)»(ref-22906) (for Mustang)
«TESTS W/CODES - EEC 2.5L»(ref-22894) (for Probe)
«TESTS W/CODES - EEC-IV (3.0L)»(ref-22895) (for Sable, Taurus, Tempo & Topaz)
«TESTS W/CODES - EEC-IV (3.2L SHO)»(ref-22896) (for Taurus)
«TESTS W/CODES - EEC-IV (3.8L)»(ref-22897) (for Continental, Cougar, Mustang, Sable, Taurus & Thunderbird)
«TESTS W/CODES - EEC-V (3.8L)»(ref-22898) (for Mustang)
«TESTS W/CODES - EEC-V (4.6L)»(ref-22907) (for Cougar & Thunderbird)
«TESTS W/CODES - EEC-IV (4.6L)»(/ford/crown-victoria/i-1992-1997/remont/testing-diagnostics/#engine-controls-tests-wcodes-eec-iv-46l) (all other 4.6L)
«TESTS W/CODES - EEC-IV (5.0L)»(ref-22906) (for Mustang)

MEASURING CORE-VOLUME VANE AIRFLOW (MC-VAF) SENSOR

Measuring Core Position	(1) Volts
Closed	4.0
1/4 Open	2.4
1/2 Open	1.6
3/4 Open	0.8
Fully Open	0.4
(1) See appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section following this table for terminal Identification.

(1)	See appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section following this table for terminal Identification.

MC-VAF METER SPECIFICATIONS

«TESTS W/CODES - EEC 2.5L»(ref-22894) (for Probe)
«TESTS W/CODES - EEC-IV (3.0L)»(ref-22895) (for Sable, Taurus, Tempo & Topaz)
«TESTS W/CODES - EEC-IV (3.2L SHO)»(ref-22896) (for Taurus)
«TESTS W/CODES - EEC-IV (3.8L)»(ref-22897) (for Continental, Cougar, Mustang, Sable, Taurus & Thunderbird)
«TESTS W/CODES - EEC-V (3.8L)»(ref-22898) (for Mustang)
«TESTS W/CODES - EEC-V (4.6L)»(ref-22907) (for Cougar & Thunderbird)
«TESTS W/CODES - EEC-IV (4.6L)»(/ford/crown-victoria/i-1992-1997/remont/testing-diagnostics/#engine-controls-tests-wcodes-eec-iv-46l) (all other 4.6L)
«TESTS W/CODES - EEC-IV (5.0L)»(ref-22906) (for Mustang)

THROTTLE POSITION (TP) SENSOR

Throttle Position	Ohms	Volts
1.8L A/T (2)
1/8 Open	.989	.998
1/4 Open	1.104	1.60
3/8 Open	1.278	2.37
1/2 Open	1.462	2.74
5/8 Open	1.480	3.15
3/4 Open	1.459	3.43
7/8 Open	1.144	3.60
Full Open	1.072	4.02
2.5L (3)
Closed	0.4	0.5
1/4 Open	0.6	1.3
1/2 Open	1.6	2.2
3/4 Open	2.2	2.9
Full Open	3.0	3.7
(1) Values may vary by 15 percent. (2) Measure between Light Green/White wire and ground. (3) Measure between Yellow wire and ground.

(1)	Values may vary by 15 percent.

(2)	Measure between Light Green/White wire and ground.

(3)	Measure between Yellow wire and ground.

TP SENSOR SPECIFICATIONS (1)

VANE AIRFLOW (VAF) METER

Door Position	Volts
1/8 Open	3.24
1/4 Open	5.60
3/8 Open	5.62
1/2 Open	5.83
5/8 Open	6.02
3/4 Open	6.75
7/8 Open	7.46
Full Open	7.87
(1) Voltage may vary by 15 percent.

(1)	Voltage may vary by 15 percent.

VAF METER SPECIFICATIONS (1)

BAROMETRIC PRESSURE (BARO) SENSOR

Barometric Pressure (In. Hg)	Frequency (Hz)
17.1	122.4
18.3	125.5
19.5	128.7
20.7	131.9
21.8	135.1
23.0	138.3
24.2	141.8
25.4	145.4
26.6	148.9
27.7	152.5
28.9	156.1
30.1	159.6
31.0	162.4
(1) Frequency value may vary by 3 percent.

(1)	Frequency value may vary by 3 percent.

BARO SENSOR SPECIFICATIONS (1)

DIFFERENTIAL PRESS FEEDBACK EGR (DPFE) & PRESS FEEDBACK EGR

(PFE) SENSORS

Pressure (psi)	Vacuum (In. Hg)	(2) Volts
4.34	8.83	4.56
3.25	6.62	3.54
2.17	4.41	2.51
1.08	2.21	1.48
0	0	0.45
(1) Voltage may vary by 15 percent. (2) Measure between Brown/Light Green wire and ground.

(1)	Voltage may vary by 15 percent.

(2)	Measure between Brown/Light Green wire and ground.

DPFE SENSOR SPECIFICATIONS (1)

Pressure (psi)	Vacuum (In. Hg)	(2) Volts
1.82	3.70	4.75
1.36	2.79	4.38
0.91	1.85	4.00
0.46	0.94	3.63
0	0	3.25
2.47	5.03	1.22
3.63	7.40	0.25
(1) Voltage may vary by 15 percent. (2) Measure between ground and Brown/Light Green wire (Blue/Yellow wire on Escort and Tracer).

(1)	Voltage may vary by 15 percent.

(2)	Measure between ground and Brown/Light Green wire (Blue/Yellow wire on Escort and Tracer).

PFE SENSOR SPECIFICATIONS (1)

FLEX FUEL (FF) SENSOR

Percentage Of Methanol	Frequency (Hz)
0	30-70
10	40-80
20	50-90
30	60-100
40	70-110
50	80-120
60	90-130
70	100-140
80	110-150
90	120-160
100	130-170

FF SENSOR SPECIFICATIONS

INTAKE AIR TEMP (IAT) & ENGINE COOLANT TEMP (ECT) SENSORS

Temperature °F (°C)	(2) Volts	(2) Ohms
50 (10)	3.51	58,750
68 (20)	3.07	27,300
86 (30)	2.60	24,270
104 (40)	2.13	16,150
122 (50)	1.70	10,970
140 (60)	1.33	7700
158 (70)	1.02	5370
176 (80)	0.78	3840
194 (90)	0.60	2800
212 (100)	0.46	2070
(1) Values may vary by 15 percent. (2) See appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section following this table for terminal identification.

(1)	Values may vary by 15 percent.

(2)	See appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section following this table for terminal identification.

IAT & ECT SENSOR SPECIFICATIONS (1)

«TESTS W/CODES - EEC 2.5L»(ref-22894) (for Probe)
«TESTS W/CODES - EEC-IV (3.0L)»(ref-22895) (for Sable, Taurus, Tempo & Topaz)
«TESTS W/CODES - EEC-IV (3.2L SHO)»(ref-22896) (for Taurus)
«TESTS W/CODES - EEC-IV (3.8L)»(ref-22897) (for Continental, Cougar, Mustang, Sable, Taurus & Thunderbird)
«TESTS W/CODES - EEC-V (3.8L)»(ref-22898) (for Mustang)
«TESTS W/CODES - EEC-V (4.6L)»(ref-22907) (for Cougar & Thunderbird)
«TESTS W/CODES - EEC-IV (4.6L)»(/ford/crown-victoria/i-1992-1997/remont/testing-diagnostics/#engine-controls-tests-wcodes-eec-iv-46l) (all other 4.6L)
«TESTS W/CODES - EEC-IV (5.0L)»(ref-22906) (for Mustang)

MANUAL LEVER POSITION (MLP) SENSOR

Position	(1) Ohms
P	3770-4607
R	1304-1593
N	660-807
O/D (1)	361-442
D	190-232
1	78-95
(1) Measure between Light Blue/Yellow wire and Gray/Red wire.

(1)	Measure between Light Blue/Yellow wire and Gray/Red wire.

MLP SENSOR SPECIFICATIONS

MASS AIRFLOW (MAF) SENSOR

Engine Condition (1)	(2) Volts
Idle	0.6
20 MPH	1.1
40 MPH	1.7
60 MPH	2.1
(1) Engine at normal operating temperature. (2) Voltage may vary depending on vehicle load and temperature.

(1)	Engine at normal operating temperature.

(2)	Voltage may vary depending on vehicle load and temperature.

MAF SENSOR SPECIFICATIONS

Throttle Angle (Degrees)	(2) Volts
0	0.50
13	1.21
26	1.82
39	2.43
52	3.03
65	3.65
78	4.26
(1) Voltage may vary by 3 percent. (2) Measure between Gray/Red and Gray/White wires (Light Green/Black and Red/White wires on Escort and Tracer).

(1)	Voltage may vary by 3 percent.

(2)	Measure between Gray/Red and Gray/White wires (Light Green/Black and Red/White wires on Escort and Tracer).