Just want to know if anyone can help out. I have a 1991 Honda Accord and at a idol it revs up and down, I dont want to take it to get smogged like this, does anyone have any idea what it is?

I have a 1991 Honda Accord and my car idles high then low on 1 and 2 when the engine is warm and in park, or when I turn on the air conditioner. I need a solution ASAP.

my car which i got last year was good but when i put the cold air intake on it i had problems....... such as my clutch and my oil pressure and then the idling which was so gay cause i didn't have any problem before i bought it so i got a new clutch radiator and new oil pump and water pump and it still didn't fix it so i need a solution now asap!!!!!!1

idles up then down, constantly. when warmed up. is it the MAP sensor???

ok check it out, i love my Honda Accord. first off brakes stopped working, car sits in neutral (stick) and revs up high and low, high and low, over and over again, then my coolant stopped circulating (i think) runs 2 minutes gets hot and shuts off, top radiator hose gets extremely hot and lower stays cold. and now it won't even start. i replaced everything for the brakes including the power booster, still no brakes. can anyone help me out on these issues?

engine idles high then low while in park. transmission seems to be affected by this also