Replaced the IACV on my 2001 Accord V4 because of startling engine on the cold start, but no OBD codes. Got a direct replacement from Advance Autoparts. Replaced it. A day after P0505 came on. Go figure. Checked all the vac lines, checked the connector. Never moved the intake. All seem ok. Do I need to adjust the idle speed, add coolant, or trash the replacement valve?

 

Welcome to HAF!
I posted in General Tech. Please don't duplicate the same question in multiple places, it just makes it more confusing.

 

Thanks. I posted in General Tech after I found out how to do it. How do I delete this one in New Member?

 

I already deleted your 3rd post, but you can press the "edit" button on your own posts then select "delete post" or something like that.