I have a 2000 civic ex that iv been struggling with forever to get it to idle. Not long ago, i blew my stock motor up and the drag strip and then put in a 99 civic ex D16Y8 motor to replace the 2000 D16Y8. My old motor idled fine, only different things I did now is stage 1 clutch, lightweight flywheel, Headers, O2 sim, and Aem V2 intake. I replaced the IACV 2 times now. First with the one from my orginal motor and now a brand new one and still shitty idle. When coming to a stop the rpms will drop down to like 100-200 rpms, barly running. I need help!!!

 

I NEED HELP!!!

 

replace the thermowax valve or block it off and reroute the hoses!!!


the thermowax valve is the valve under the intake manifold

 

Whats the function of the thermowax valve?

 

Why do you have an 02 sim installed? Are you getting any CELs? If so, post the codes so someone could possibly help you out more.

 

I have a high flow cat so i had to hook up the second o2 sensor so i didnt kick on the check engine light. before i installed I klept getting the IAC code, 02 sensor below threshold, and an EVAP leak code. Now I did the 02 sim and the brand new IAC tonight and cleared the codes out. So for after driving for about 2 hours and shutting the car of a couple times, the light hasnt came back on.

 

??????

 

Explain the thermalwax valve, I wanna hear more about this please..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PK SPEED &raquo;</TD></TR><TR><TD CLASS="quote">Explain the thermalwax valve, I wanna hear more about this please..</TD></TR></TABLE>

It doesn't exist on a Y8.

The FITV is NOT present on all Civics and Integras.