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 MANUALSTOYOTA19884RUNNER SR5, 2.4 R, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMCOMPUTER CONTROL SYSTEMOPERATIONDATA SENSORSCOOLANT TEMPERATURE SENSOR
1988 Toyota 4Runner SR5, 2.4 R, Standard
Coolant Temperature Sensor
1988 Toyota 4Runner SR5, 2.4 R, StandardSECTION Coolant Temperature Sensor
Coolant temperature sensor sends signal to ECU in relation to coolant temperature. ECU uses sensor signal for controlling fuel injection duration, spark advance system, idle speed control system and EGR system.
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.