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.
You might have a problem with you idle control motor (or servo kit). This is part of the fuel induction system. Turn on the air conditioner while in park, if your car shakes (more than normal) that might be the problem. You may have to spend $200 on a new idle control motor or might simply have to aâ¦.