Where is the coolant temperature sensor located on the Haval H7?
2 Answers
The coolant temperature sensor is located on the engine near the intake manifold. There are generally two coolant temperature sensors: one is the sensor for the temperature gauge, which has a single wire and is used to display the temperature of the coolant (or cooling liquid) on the temperature gauge and adjust the fuel supply during startup. The other is the sensor for the coolant or cooling liquid, which has two wires and is used to control the electric fan. When the temperature is high, the electric fan will operate. Below are some related details: 1. Definition of the coolant temperature sensor: Typically, the coolant temperature sensor is a negative temperature coefficient thermistor installed in the engine cylinder head water jacket, in direct contact with the coolant, to measure the temperature of the engine coolant. The coolant temperature sensor is also an electronic component in the car's circuit. If it fails, there is usually no way to repair it, and it must be replaced. 2. Symptoms of a faulty coolant temperature sensor: The temperature gauge needle does not move or points to the highest position. Difficulty starting the engine when cold, because the faulty sensor still shows the temperature signal of a hot engine during cold starts. The ECU does not receive the signal for a richer air-fuel mixture and can only provide a leaner mixture to the engine. Increased fuel consumption, unstable idle; difficulty accelerating, even when the throttle is fully pressed, the engine speed does not increase.
The coolant temperature sensor of the Haval H7 is generally located at the rear side of the engine, near the cylinder head water outlet. After opening the engine hood, follow the thickest upper coolant hose, and you'll find the sensor inserted into the metal housing between the engine block and the hose connector, usually with a blue or green plug. I've replaced it myself – it's advisable to perform this operation when the engine is cold. You need to drain some coolant first; otherwise, hot coolant may spray out when loosening it. After replacing the sensor, the water temperature returned to normal. Pay attention to symptoms like erratic temperature gauge readings, difficulty during cold starts, or the fan running excessively – these are likely signs of a faulty sensor. Always choose genuine OEM parts, as aftermarket ones may provide inaccurate readings.
