8942233040 Toyota SENSOR, WATER, Price: 34.67$, Weight: 0.015kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Toyota |
8942233040 |
SENSOR, WATER |
0 |
0.015 |
7-10 |
34.67$ |
| Not Available | ||||||
Originals
Engine Coolant Temperature Sensor for Toyota models 🌡️
This precision ECT unit constantly measures coolant heat inside the engine water jacket and sends data to the ECU. Accurate temperature feedback keeps cold starts smooth, fuel trims correct, fan control smart, and protects the head gasket from overheating. It’s a small part with a big job in Toyota cooling and fuel systems.
Why you need it 🔧
The ECU uses this signal to set air‑fuel ratio, ignition timing, idle speed, radiator fan on/off, and even transmission shift strategy. Proper readings improve fuel economy, reduce emissions, and stabilize idle in traffic and hot weather.
How it works ⚙️
Inside is an NTC thermistor. The ECU feeds a 5V reference; resistance drops as coolant warms, changing the return voltage. A sealed brass body with an O‑ring/washer threads into the housing, and a 2‑pin connector carries ground and signal. The ECU converts voltage to temperature for live control.
What happens if it’s bad ⚠️
Hard cold starts, rich mixture, rough idle, poor mpg, weak heater, erratic fan operation, or overheating. Check engine light is common with codes like P0115–P0119, a dead gauge, or fans stuck on.
Signs & service tips ✅
- Cracked plug, green corrosion, or coolant seep at the sensor.
- Compare resistance to spec by temperature; replace if out of range.
- Use fresh seal, torque correctly, bleed air from the cooling system.
- Verify fit by VIN; many Toyota and Lexus engines share this type.
Restore stable warm‑up, clean combustion, and reliable fan control with a quality water temperature sender 🚗.