03s2k84

Hey guys im having issues with my 03 Ap1, I performed a valve adjustment and everything came out fine,the issue im having is that it dies when i cme to a stop but only after its warmed up not when cold,it idels low and bogs a little in low rpms like 2500. I also note that sometimes it feels like if it runs real good and smooth and sometimes it runs a little rough. Once in a great while it dosent go into vtec but thats very rare, id really apreciate it guys if u can help me out thanx!!!

AZfury

This seems to be a very common problem that gets brought up allot, have you done any searches on here yet? If you look down more in this "under the hood" section you will see a thread that says dipping revs and hesitation, check it out

gptoyz

I've been chasing this issue on a friends car too

We had an ap2 05 donor car to swap map sensor, coil packs, everything etc the stupid IAC

So far it was a collective thing:
check your plugs for fouling
make sure your battery is good
check your alternator output values
o2 sensors, even the secondary one
check the IAC mechanical function, don't just clean it
throttle body
intake manifold for build up
air filter condition
...and at the end MAKE SURE TO DO A IDLE LEARN RESET!!!!

Who's up for an ap1 rough/dipping/stumbling/dying idle get together and diy day?

eparra83

Cleaning the throttle body helped. Check your spark plugz like gptoyz stated. What really worked for me was thoroughly cleaning the IAC. My car would die at a stop, only when the engine was warmed up, and mostly on gloomy days with lots of moisture in the air.

https://www.youtube.com/watch?v=jMMUCZRQaOc