IACV...
 

My 92 civic (stockd16) is surging from 1k - 2.5k rpms at idle. Cooling is not the issue so I figure its the IACV. I have not replaced one nor do i know where this is. Is it attatched to the firewall? How much do these parts typically cost? Any help would be appreciated, i know it is not too big a deal, but it needs to get fixed...

Re: IACV...
 

they are like 130 bucks brand new at honda. it is on the back of your intake manifold with several coolant lines and a plug going to it. 3 10mm bolts hold it on.

Re: IACV...
 

right on. any sure way to know it's broke? or is the crazy idle fact enough?

Re: IACV...
 

any check engine lights?

Re: IACV...
 

none

Re: IACV...
 

try cleaning it.

Re: IACV...
 

really? i'll try tomorrow, i'd like to see an improvement..

Re: IACV...
 

what should i use to clean it?

Re: IACV...
 

Well, on my D15 in my 95 civic there are only 2 lines going to it, and 2 bolts holding it on, I think it would be the same for the d16, the bolts are diaganol from each other. Try cleaning it out, as soon as u take it off u should know just by looking at it if it's dirty or not, but u shouldn't need to replace it.

Re: IACV...
 

i hope not, i can think of alot of things i could buy with 100 bucks other than a damn iacv,lol.