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 MANUALSTOYOTA19904RUNNER 2D UTILITY, 2.4 R, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESENSOR RANGE CHARTSENGINE CONTROLS - SENSOR OPERATING RANGE CHARTSCOOLANT TEMPERATURE SENSOR SPECIFICATIONS
1990 Toyota 4Runner 2D Utility, 2.4 R, Automatic
Coolant Temperature Sensor Specifications
1990 Toyota 4Runner 2D Utility, 2.4 R, AutomaticSECTION Coolant Temperature Sensor Specifications
COOLANT TEMPERATURE SENSOR RESISTANCE SPECIFICATIONS
| Application Terminals | (1) Ohms | ||
|---|---|---|---|
| -4°F (20°C) | 10,000-20,000 | ||
| 32°F (0°C) | 4000-7000 | ||
| 68°F (20°C) | 2000-3000 | ||
| 104°F (40°C) | 900-1300 | ||
| 140°F (60°C) | 400-700 | ||
| 176°F (80°C) | 200-400 | ||
| 212°F (100°C) | 120-200 | ||
| 248°F (120°C) | 0-120 | ||
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RENDER: 1.0x
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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.