What the first apprentice comment poses 23 is true the problem must be sought in the thermostat and also in the water pump:
I am a mechanical technician and I had a very similar case with a 2004 Chevy
it happens that the PCM when detects 98 degrees trigger the low velveter speed (needle at 3/4 Dereloj, 2-3 stripe obstructed, or defective pump then dripping the early one up to 103 feet, 3/4 clock (seen with扫描仪)然后PCM射击并保持风扇的高速度,这也会发出异常的噪音
,当检查他的水泵最小的泄漏时,朝着汽车的水泵泄漏,这将使发动机在105度以上过热,
并且汽车不再恢复泵,并且返回了汽车。