Hi guys, when I unplug my IAC valve and measure voltag, I am only getting 4.95 volts. I measured voltage from the ecu and it is the same. Can someone please tell me the what pin or wire I can use to run a wire directly from the main relay to the IAC. This surging idle is driving me nuts. I drive a 95 EJ1 with a 94 JDM B18c. Thanks in advance guys.
Peace,
Jeff


Modified by Feelseg at 4:55 PM 8/7/2007

 

Year and model? 2 or 3 wire iacv? Which wire are you checking?

 

hey there, I have a 95 Civic w/ a 94 JDM B18c swap. I have a 2 wire IACV and one wire is 0 volts and the other is 4.9??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Feelseg &raquo;</TD></TR><TR><TD CLASS="quote">hey there, I have a 95 Civic w/ a 94 JDM B18c swap. I have a 2 wire IACV and one wire is 0 volts and the other is 4.9??</TD></TR></TABLE>
What wire color has what voltage?

 

The red/yellow wire, 4.9V.

 

Are you checking it with the engine running? The other wire should have battery voltage when it running, but 0 when the engine is off.

 

I am checking it when running.

 

It should get voltage from pin 6 on the main relay, the same one that supplies the injectors.

 

got a pic, by any chance? thanks bro.
peace,
Jeff

 

the reason you are getting 4.9 volts on it is because you have the IACV and IAT plugs switched.

colors at the IAT
red/yellow & green/black (dc)
red/yellow & green/white (eg)

colors at the IACV
yellow/black & black/blue (dc)
yellow/black & blue/yellow(eg)


pick up a new/used IAT, plug everything in correct and you'll be fine.