My car idles rather low. 1) What is the standard idle speed, automatic in neutral? 2) Is there anything tricky about removing the engine cover? 3) Is there anything tricky about adjusting the idle speed?

I know all this info probably exists in the Forum but I can't seem to find it. I've seen reasons why the car my have a low idle but no info on adjusting it. Anyway not complaining, just never been in there and don't want to doing something stupid... Thanks