Are 5-valve and 2-valve throttles common? Is the throttle common?

1. It depends on the model. The old Jetta has two valves. Jetta King is common, but the new Jetta has two valves. There are two kinds of Jetta throttles, one is cable type, and the other is 89 1 1. Another electronic one, more than 500. There is something wrong with the throttle valve. The engine starts normally, but whether it is a cold engine or a hot engine, the idle speed is unstable, the idle speed is too low, and it is easy to stall. Cause of failure Air leakage in air intake system or vacuum system. The air filter is clogged. Idle speed control valve or additional air valve is not working properly. The air flow meter is faulty. The EGR valve is stuck in the normally open position and cannot be closed. Improper idle speed adjustment.

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