What's that recirulated part under the front of the throttle body?
#1
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What's that recirulated part under the front of the throttle body?
What is the part just under the throttle body opening? It looks like it recirulates through a rubber pipe back into the stock plastic air tube. Will this also need to be tied into my IC pipes? Any mods needed? What's it do?
I've got a 94 1.8 in case it doesn't exist on some other years. I see it on Braineacks pics of his engine tear down. Just trying to figure out these last bits I need to create parts for before building. Hadn't seen this part discussed before. Didn't know there were other tubes (more T's needed) that I'd have to tie into the IC pipes other than the recirculated BOV.
I've got a 94 1.8 in case it doesn't exist on some other years. I see it on Braineacks pics of his engine tear down. Just trying to figure out these last bits I need to create parts for before building. Hadn't seen this part discussed before. Didn't know there were other tubes (more T's needed) that I'd have to tie into the IC pipes other than the recirculated BOV.
#2
It is the AIC i believe. If it is the AIC it is nothing more than an autmatic choke valve that feeds us aux air to idle, on cold start ac running etc. You can run with it blocked as i have for quite some time you just have to tune around it or plumb it in. To plumb it in o mine i just put a nipple close to the TB and ran into it.
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AIC valve. If youre running the AFM you need to pipe it in with your intake system, but if you are running a MAP sensor, you can just put a little filter over it ... or have it the other way, or block it off but then you loose idle control.
#7
It "IAC" (idle air control) valve is electronically PWM (pulse width modulated) controlled by the ECU. If you don't pipe it back into the intake you'll leak boost thru the valve. The engine "leaks" vacuum thru the IAC and that's the whole purpose of it. This small amount of air bypassing the throttle butterfly is how the ECU controls the idle rpm. I don't recomend sticking a filter on it. I don't recomend plugging it up. Correctly pipe it into the IC outlet to throttle body pipe.
You can use the original hose. Just swing it around and it lines up with most setups where the charge pipe comes up to the throttle body.
You can use the original hose. Just swing it around and it lines up with most setups where the charge pipe comes up to the throttle body.
#10
well when i was installing my custom intercooler pipes...i left the iac nipple open and the car would start up and die because of the huge vacuum leak...the only solution i had was to plug it up/reroute it back to the mani or plumb it back into the charge pipe....but the problem with rerouting is the nipple on the iac was huge, the size of a nickel....so i had a hard time finding a vacuum hose to plug up so i drilled and tapped my charge pipe to accept the hose...Im i talking about the wrong sensor?
#12
well when i was installing my custom intercooler pipes...i left the iac nipple open and the car would start up and die because of the huge vacuum leak...the only solution i had was to plug it up/reroute it back to the mani or plumb it back into the charge pipe....but the problem with rerouting is the nipple on the iac was huge, the size of a nickel....so i had a hard time finding a vacuum hose to plug up so i drilled and tapped my charge pipe to accept the hose...Im i talking about the wrong sensor?
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