ITRCA

Anyone have a scan of where the IAC is?

My check engine light has come on twice in the past month. First, I contributed it to a loose gas cap but the car did not reset itself after tightening. The second occurred while stationary. The car has had a tendency to rev up on it's own. I thought that this car was just too much of a badass and didn't think twice about it. However, after doing a diagnostic, I received a code 14, faulty ACV? I have installed a cold air intake w/ bypass, 70mm thotthle body, mugen headers and mugen cat back exhaust w/ a hyper ground wiring kit.

IACV is that black thing on the back of the intake manifold, and it may be that you crossed some wires when putting in the TB, the IACV wire is the same size as the IAT wire, but one is a resistor, and one is not, so you may have burnt out your Idle air speed motor in the IACV. Could be a couple things, but the IACV is one of the more common sensors to go back when you fuck with it.

I'm curious, what do you have done to your car that you need a 70mm TB, unless you have a very large turbo, or are running a supercharger or something, that's way overkill, and in it of itself may be the cause of your problems. An almost stock motor just can't suck up that much air any way. I run some really high compression(almost 13:1), and some pretty big cams, and was debating whether 66mm was too much.....

Any way, make sure if you havn't already that you get your manifold bored out to match. I know king motorsports does work with TBs and Manifolds, and more importantly, does it right.

Good Luck, if you need any more help, just ask.

Later,
Aj