At this point they are considered incertae sedis;in other words, we know that they are theropods; and probably coelurosaurs; but we don't know who they are related to or how they fit into the big picture of theropod phylogeny.
Idle speed is adjusted by means of the idle control valve, which is a solenoid-operated valve that is generally automatically adjusted by a computer. One problem that can occur with this component is a loss of power (from a severed line or a short) but a more common problem is simply dirt and grime.
The flow through the valve is controlled. by a rubber sleeve which is actuated by hydraulic pressure. The valve is either in the fully opened or the closed (shut off) po sition. The âAUTOâ position on the selector has no effect on valve control but is used when the valve is equipped with automatic contro ls. AUTOMATIC CONTROL: If the valve is equipped with an electric solenoid, the on/off function can be automatic by using. an electric controller.