02 honda accord stalling problems?

Lately, every few days, my 2002 Honda Accord V6 will act up. I start my car, it turns over right away, but the idle is very rough and varys from around 300 to 500 RPM, which is very rough and on the verge of shutting off. If i give it any throttle, it dies, i start it again and it does this over and over. The problem gets better and the RPM goes up little by little and goes away after a minute or two. Temperature is not a problem, it does this cold or warm. It stumps me because it only does it once ever couple days and it never has given me a dash light. Any help?

Sounds like an IAC (Idle Air Control) Valve problem to me. It allows a certain amount of air into the manifold with the throttle plate closed. Some can be removed and cleaned.

I don't think the IAC is causing your problem. P0505 is the most common but there are several codes for IAC faults. Your Engine Light does come on when you turn the key ON, right? And then goes off when you start it? You should have gotten a Random Misfire code. So your Onboard Diagnostics are suspect. It won't tell you if you have a Vacuum Leak or Contaminated Fuel. Both could cause problems like yours. Changing the fuel filter and adding Gas Line Drier is what I'd do… Assuming your OBD2 system is working.