The maximum idle speed of FAW Qingdao Han Wei 336 1500 can't pass. What happened?

It is usually caused by carbon deposit or air leakage.

Solution:

1. Clean the throttle valve and match it;

2, check whether there is any leakage on the exhaust pipe, the latter leakage;

3. Check the carbon deposit at the air inlet of the vehicle;

4. Check the water temperature sensor.