you could try re learning your idle.first make sher you have your radio code(under the fuse box cover or in you glove box)if you don't you will have to get the serial number of the radio and call you dealer or hold 1 and 6 at the same time and turn the radio on it should display you serial number.

OK any ways un do you battery for 2 min then re connect you battery just let it idle for 20 min(ac off blower fan off head lights off).let me know their is a couple of things we can look into. any codes?

and yes the idle can be adjusted but on that car you would need a hondas hds.