Idle air control valve :dunno:?

 

i did a google search, and i think you're right.

"PCV valve:
(PCVV)Part of the positive crankcase ventilation system, which reroutes crankcase blowby to the intake manifold and back to the engine, where it is reburned in the cylinders as part of the fuel-air mixture. This cuts emission pollution and improve fuel economy because unburned fuel in the blowby is consumed the second time around. It also keeps the blowby and water vapor from fouling the oil in the crankcase, thus reducing the formation of engine sludge. "


the valve and gromit needed are only $10 too. i hope this works, because i'm a bit freaked to put my car into gear and drive to the dealer with the rpms spiking around 2k

 

my car had a problem similar to that. except it was a faulty cam shaft sensor. so the car didn't know how to idle. so everytime i start it would rev to 3k and drop to 0k...had to get it towed and replaced under warrenty:happysad: