93 Accord EX. All stock to my knowledge. MT.

Yes, yes, very popular problem.

Here's what I have done to no avail.
-cleaned IACV
-changed IACV with one from junkyard. (because i'm not dropping $200 on a new one when i'm not 100% true that it is the problem)
-cleaned and changed FITV, which i believe works because it runs GREAT when cold.
--also, runs well at highway speeds.

The coolant temperature sensor seems to be working.

Bonus info: it has a crazy oil problem as well.
-sometimes I drive it an hour, absolutely no problems. (oil wise)
-the next day I fire it up, drive it about 20 minutes, I have a huge oil leak and the check engine light on.

I'm new to Hondas. But have been around cars since I was small and know my way around a GM.

Help a newb out? Thanks.

Any input is greatly appreciated.

 

I would check the coolant, low coolant could be the problem, and a coolant flush wouldn't hurt.

 

my first thought is lazy oxygen sensor .. only go Denso

 

I'd start by getting the code - no reason to guess if the ECU is trying to give you a hint. Again, Just my opinion.

 

i missed that a code was being thrown.. pull the code first as Lost said