What is the reason why the water temperature of Ruifeng automobile is not 90 degrees? The high speed is 80 degrees and the medium speed is 90 degrees.

1, the throttle temperature is broken, the main valve falls off or the paraffin controlling the lifting of the main valve leaks, resulting in a large direct circulation flow of cooling water when the engine is started (water circulates between the radiator and the engine). However, the normal engine has a few minutes of warm-up process just after starting, and the cooling water is circulated in small cycles. At this time, the main valve of the thermostat is closed and the bypass valve is opened. The cooling water only circulates between the water pump and the engine without passing through the radiator, so that the engine can be warmed up as soon as possible. If this is the case, you should replace the thermostat. Don't think you'll be fine just by replacing it. Now you know the quality of auto parts. 2. See if the fan runs at high speed when the engine is just started. If yes, check whether the temperature control switch or fan relay is faulty.