kizo

I have a 90 honda civic hatch, and for 2 days now its been idling really wierd, it goes up and down and i don't know whats wrong with it, its brother the hell out of me and i wish some one could tell me, whats wrong with it.. please if anyone knows whats wrong with it, please help me....

Lauj87

IACV (air idole control valve) most likely....if not TPS.

Chewie

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lauj87 &raquo;</TD></TR><TR><TD CLASS="quote">IACV (air idole control valve) most likely....if not TPS.</TD></TR></TABLE>

and wrong forum

DAguyLS

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lauj87 &raquo;</TD></TR><TR><TD CLASS="quote">IACV (air idole control valve) most likely....if not TPS.</TD></TR></TABLE>

It's Idle Air Control Valve, as the acronym would spell IACV.

But anyway, your IACV is most likely clogged. Search around on here for DIY's on cleaning it out.

Lauj87

ahhaa yeah i realized it when i posted it already haah but you guys know what im talking about :-D

kizo

well i replaced that iavc and its still the same, i have no leaks on the manifold but its still the same, and i'm not really sure if its my wiring, becasue my ECU is reading only one and well, i know thats the oxygen sensor, but its still the same.....

Lauj87

then its your TPS...(throttle position sensor)

kizo

hum, my engien is D15B2 and its dual port, i dont know if thats going to help, i replaced the EVAC instead of the IAVC, hum also the TPS sensor is ribbed on so, how do i go about cleaning out the IAVC?

Lauj87

humm.....i never changed one on a D series motor..but with my b series it just bolted right off!