Hello Everybody!
When I start the car its fine, then 10 minutes later if its in park or neutral, the car revs up and down. If I put it in drive, no problem! Any one have insight to share with me?

Try The Tps, Or The Map Sensor

I have a some what similar problem with my 98 Honda Civic EX. But my problem is that when I'm driving when normal acceleration, everything is fine, but If I accerlate too quickly, my RPMs stick high even when I left off the accelerator and brake. The car acts as if it doesn't want to stop. This all started after I changed to a new cold air intake. Any advise?