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.
ENGINE CONTROLS - 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 will cause driveability problems.
| Coolant Temperature °F (°C) | M/ohms |
|---|---|
| 68-120 (20-49) | 2.25-2.55 |
| 130-148 (55-65) | 1.75-2.25 |
| 150-165 (66-74) | 1.40-1.75 |
| 168-190 (76-88) | 1.00-1.40 |
| Temperature °F (°C) | Output Voltage | Ohms |
|---|---|---|
| 14 (-10) | 4.4 | 9200 |
| 68 (20) | 3.5 | 2500 |
| 122 (50) | 2.2 | 800 |
| 194 (90) | 0.9 | 200 |
| Temperature °F (°C) | Output Voltage | Ohms |
|---|---|---|
| 14 (-10) | 4.4 | 9200 |
| 68 (20) | 3.5 | 2500 |
| 122 (50) | 2.2 | 800 |
| 194 (90) | 0.9 | 200 |
| Engine RPM | (1) Volts | ||
|---|---|---|---|
| 800 | 1.2-1.4 | ||
| 1500 | 1.5-1.7 | ||
| 2000 | 1.7-1.9 | ||
| 2500 | 1.9-2.1 | ||
| 3000 | 2.1-2.3 | ||
|
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| Vehicle Speed (MPH) | (1) Volts (AC) | ||
|---|---|---|---|
| 0 | 0 | ||
| 5 | 0.5 | ||
| 10 | 1.0 | ||
| 15 | 1.6 | ||
| 20 | 2.0 | ||
| 25 | 2.4 | ||
| 30 | 2.8 | ||
| 35 | 3.1 | ||
| 40 | 3.4 | ||
| 45 | 3.6 | ||
| 50 | 3.9 | ||
| 55 | 4.2 | ||
| 60 | 4.4 | ||
|
|||
| Coolant Temperature °F (°C) | (1) Ohms | ||
|---|---|---|---|
| 68 (20) | 2200 | ||
|
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| Throttle Position | (1) Volts | ||
|---|---|---|---|
| Closed | .4 | ||
| 1/4 | 1.3 | ||
| Half Open | 2.2 | ||
| 3/4 | 3.1 | ||
| Fully Open | 4.1 | ||
|
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Use the Manual With the Right Hardware
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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.
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