Need help with IAC system! - Honda Prelude Forum

red92s · 12-13-2002, 08:01 AM

I'm in the process of putting a JDM H22 into my 92 Prelude S. There is an extra solonoid mounted right above the fule rail on the H22 (not the VTEC sol, VTEC, oil press., or IAB valve. . .I know where all those are). It has one vaccum line from the FPR and another going somewhere else on the intake manifold. It also has a connector for a 2-wire plug. It is black and the top is shaped like a cylinder. I'm pretty sure this is part of the IAC system (not the IAB/vaccum secondary system), correct? I can't seem to find the plug for it on the JDM harness, does anyone know the wire colors for it? Also, since my car never had the IAC system, I dont have the diaphram or accumulator box locatd down near the air filter. Is it necessary to connect this system (I've heard its essentialy eliminated when you add an aftermarket intake)? If not, how can I bypass it? Thanks in advance! -Tim

TimeRacer · 12-13-2002, 03:26 PM

The IAC has two coolant lines going into the base and a 2-wire plug going into it. There's no vacuum lines for the IAC. I've removed the damn thing too many times since I think my IAC is dying which is why I'm starting to throw the code 14s every so often.

red92s · 12-13-2002, 03:48 PM

Must not be it. man, this is really confusing. . .they are definitly VACCUM lines. One runs to the TOP of the FPR, the one on the bottom to a nipple on the intake manifold (right near the "PGMFI" logo). It looks VERY similar to the solonoid used on the IAB tank (but there is already a solonoid there).

fourthgeneration · 12-13-2002, 04:01 PM

isnt that the egr?

sharkcohen · 12-13-2002, 04:36 PM

red, can you post a pic up? A pic would tell all. It is definitely not the IAC.

red92s · 12-13-2002, 04:59 PM

Quote:

Originally posted by sharkcohen
red, can you post a pic up? A pic would tell all. It is definitely not the IAC.

I came to that conclusion a while ago. Arn't there parts of the EGR system on the firewall and by the shock tower as well? (there is a bunch of different valves and solonoids in the EGR system, if memory serves). Lemme see if I can find the drivers for my camera and get some pics up.