WRX intake manifold/TB question

black knight · 04-19-2003, 11:22 PM

I was wondering if anyone knew the functionality of the air passage located above the normal circle TB hold on the intake manifold? also if i were to place a blockage over this passage would it cause any engine problems? thanks BK

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Austin · 04-20-2003, 10:58 AM

Your question is poorly worded...

If you're talking about the small hole inside the throttle body, on the top before the throttle plate, then that's the Idle Air Control solenoid air passage.

The ECU controls what RPM you're idling at by how much air is sucked through that hole at an idle/when your throttle plate is shut.

Don't plug it up.

04-19-2003, 11:22 PM	#1
black knight Scooby Newbie Member#: 21597 Join Date: Jul 2002	WRX intake manifold/TB question I was wondering if anyone knew the functionality of the air passage located above the normal circle TB hold on the intake manifold? also if i were to place a blockage over this passage would it cause any engine problems? thanks BK * Registered users of the site do not see these ads.

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04-20-2003, 10:58 AM	#2
Austin Scooby Guru Member#: 7089 Join Date: May 2001 Chapter/Region: NWIC Location: Western Wa Vehicle: 2016 STi	Your question is poorly worded... If you're talking about the small hole inside the throttle body, on the top before the throttle plate, then that's the Idle Air Control solenoid air passage. The ECU controls what RPM you're idling at by how much air is sucked through that hole at an idle/when your throttle plate is shut. Don't plug it up.