Hi again flaskatron.
No the cruise control isn't standard. Easiest way to know if you've got it is to check for the stalk on the steering column, but if it isn't present make sure by looking at the throttle body: There should be three cables connected to it if you've got cruise control. One for the autobox's kickdown cable, one for the accelerator cable (connected to the gas pedal) and one coming from the cruise control actuator right next to the cooling system expansion tank.
The fact that you say that the revs started out lower and went up makes me think it's not the cruise control cable issue. I'd go with monsport's idea of an airleak somewhere. It could also be the ICV (Idle Control Valve) that's stuck open or an AFM (Air Flow Meter) issue.
If I were you there's 2 things I'd check first (both quite easy to do):
1. Check that all the cables connected to the TB have a bit of free play on them (ie. doesn't keep the TB open all the time) when you don't push down on the gas pedal.
2. Disconnect the ICV and remove. Check that the valve opens and closes easily when you shift it round (bad explanation I know
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My gut tells me you have an ICV issue. Do a search on the forum for ICV cleaning and testing and the like. There are quite a few threads covering this.
Hope this helps. If there's anything else, no matter how stupid you may think it is, don't hesitate to ask. We all have to start somewhere and everyone on here is more than willing to help with even the most elementary.
Cheers
Martin
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