Throttle starting device (Opel Vectra A)

The throttle valve starting device is necessary for automatic control of starting, accelerated idle speed (when the engine warms up), idle, fuel cut-off and engine shutdown. It is an electro-vacuum device controlled by the carburetor computer and moves the throttle valve in a certain range of angles. This control range ensures engine operation in the interval from fast idle during warming up to complete closure of the throttle valve and engine shutdown. The pusher is connected to the throttle lever and can move with the help of a diaphragm controlled by vacuum, overcoming the compression force of the spring. The working pressure is regulated by two electromagnetic valves. One of these valves is under the pressure of the intake manifold, and the other is under atmospheric pressure. Depending on the signal coming from the control computer, the pressure on the valve diaphragm changes, and, accordingly, the position of the pusher.

Adjustment of the throttle valve starting device should only be performed in specialized workshops.

Material published on the website (opelbook.ru)