What is the reason for the high idle speed of Tiguan warm air?

The reasons for the high idle speed of Tiguan warm air are: too much carbon deposit in throttle, idle motor, air inlet, air inlet valve, combustion chamber and fuel nozzle. The working principle of warm air is: after the heating function is turned on, the high-temperature coolant in the engine will flow through the warm air tank, the air blown by the blower will pass through the warm air tank, and the air conditioner outlet will blow out warm air. Take Tiguan 202 1 280TSI automatic two-wheel drive Zhixiang version as an example. Its body dimensions are: length 47 12mm, width 1839mm, height 1673mm, wheelbase 279 1mm, five doors and five seats, and vehicle weight 65438. The Tiguan 202 1 280TSI automatic two-wheel drive version is equipped with a 1.4l turbocharged engine with maximum power 1 10kw and maximum torque of 250nm, matching a 7-speed dual-clutch gearbox.