Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY1994CAPRI XR2, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESENSOR RANGE CHARTSENGINE CONTROLS - SENSOR OPERATING RANGE CHARTSINTRODUCTION
1994 Mercury Capri XR2, Automatic
Engine Controls - Sensor Operating Range Charts: Introduction
1994 Mercury Capri XR2, AutomaticSECTION 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.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
BAROMETRIC PRESSURE SENSOR OUTPUT VOLTAGE (1)
| Vacuum - In. Hg. | (2) Volts | ||||
|---|---|---|---|---|---|
| 0 | 3.84 | ||||
| 5 | 3.36 | ||||
| 10 | 2.66 | ||||
| 15 | 1.93 | ||||
| 20 | 1.26 | ||||
| 25 | 0.58 | ||||
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ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE (1)
| Temperature - °F (°C) | Ohms | ||
|---|---|---|---|
| -4 (-20) | 14,600-17,800 | ||
| 68 (20) | 2200-2700 | ||
| 176 (80) | 290-350 | ||
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IGNITION DIAGNOSTIC MONITOR VOLTAGE (1)
| RPM | 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 | ||
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TP SENSOR OUTPUT VOLTAGE
| Throttle Opening | (1) Voltage | ||
|---|---|---|---|
| 1/8 | 1.00 | ||
| 1/4 | 1.60 | ||
| 3/8 | 2.37 | ||
| 1/2 | 2.74 | ||
| 5/8 | 3.15 | ||
| 3/4 | 3.43 | ||
| 7/8 | 3.60 | ||
| Full Open | 4.02 | ||
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VOLUME AIRFLOW METER VOLTAGE (1)
| Door Opening | (2) Volts | ||||
|---|---|---|---|---|---|
| 1/8 | 3.24 | ||||
| 1/4 | 5.60 | ||||
| 3/8 | 5.62 | ||||
| 1/2 | 5.83 | ||||
| 5/8 | 6.02 | ||||
| 3/4 | 6.57 | ||||
| 7/8 | 7.46 | ||||
| Fully Open | 7.87 | ||||
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IAT SENSOR RESISTANCE (1)
| Temperature °F (°C) | (2) Ohms | ||||
|---|---|---|---|---|---|
| -4 (-20) | 10,000-20,000 | ||||
| 32 (0) | 4000-7000 | ||||
| 68 (20) | 2000-3000 | ||||
| 104 (40) | 900-1300 | ||||
| 140 (60) | 400-700 | ||||
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.