my 99' wagon, has an H23A DOHC VETC (i live in okinawa), is having issues with keeping a good idle once it has warmed up. while the engine is cold it idles fine, but once its warm it seams to idle to low and at times sut off (happend about 4 times in three months). once i was reving the engine in park and the engine sut off like i turned the key off, wouldnt restart untill i turned the key off and back on. now if i run the A/C it has no issues with idle while driving around. any ideas of what could be causing this? car has 91K kilometers on it and a lot of slow Okinawa speed driving.

 

start off checking three things.
air.
fuel.
spark.

your getting all of them but one is dying off. most likely air.
check you idle air control valve, clean if necessary.
check egr ports, clean if necessary.
clean your throttlebody.

im leaning towards dirty iacv.

 

i am thinking iac as well. figured i would pop the question before i tear the tb off. this is my first honda, im assuming the iac is located on the tb?

 

It is back of Air Intake. This may help you https://honda-tech.com/forums/acura-integra-6/%2A%2A%2Ahow-clean%2A%2A%2A-your-iacv-k-idle-air-control-valve-1575913/

 

so im finally getting around to getting this iacv cleaned, but after looking at the link posted above it seams that my iacv isnt on the back on my intake. is it one of the sensors on the front?



maybe its this on the front?