Vacuum leak near throttle body, help!

salvi · 11-24-2012, 04:54 AM

Tonight I finally turned on my 2.0 swapped GC8. Everything else is fine, but the car is dying off when I try to move the car. There is a crazy hissing sound coming from the throttle body area. I can't see where the leak is coming from. I used a brand new throttle body gasket. Are there any other vacuum leak areas on the throttle body besides the gasket?

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danger1138 · 11-24-2012, 08:48 AM

U know the small rubber line that goes to the bpv, is that connected?

salvi · 11-24-2012, 11:54 AM

Yes, that one is connected.

danger1138 · 11-24-2012, 01:04 PM

Quote:

Originally Posted by danger1138

U know the small rubber line that goes to the bpv, is that connected?

I not to the bpv itself but from where it originates underneath throttle body.. That connection..

Chaz2.5 · 11-24-2012, 01:14 PM

^^^ This would be my guess for starters especially since you can almost pinpoint where the sound is coming from. That is either poorly connected or the hose needs to be replaced. Are you throwing any codes?

danger1138 · 11-24-2012, 05:04 PM

Or try the soapy water trick. Spray some soapy water around the bpv, those gaskets wear out from time to time..

salvi · 11-24-2012, 05:46 PM

No codes, it ended up being the AICV o-ring/gasket. Replaced it and the hissing sound is gone.

danger1138 · 11-24-2012, 07:13 PM

The IAVC?

lavid2002 · 11-24-2012, 07:15 PM

Soapy water around a vacuum leak? Lol

danger1138 · 11-25-2012, 12:04 AM

No...that whole soapy water ish gets confusing..

salvi · 11-25-2012, 02:52 AM

Yeah, the idle control valve.

11-24-2012, 04:54 AM	#1
salvi Scooby Newbie Member#: 188132 Join Date: Aug 2008	Vacuum leak near throttle body, help! Tonight I finally turned on my 2.0 swapped GC8. Everything else is fine, but the car is dying off when I try to move the car. There is a crazy hissing sound coming from the throttle body area. I can't see where the leak is coming from. I used a brand new throttle body gasket. Are there any other vacuum leak areas on the throttle body besides the gasket? * Registered users of the site do not see these ads.

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11-24-2012, 08:48 AM	#2
danger1138 Scooby Specialist Member#: 279525 Join Date: Apr 2011 Location: QUEENS NY Vehicle: 04 rex luger!	U know the small rubber line that goes to the bpv, is that connected?

11-24-2012, 11:54 AM	#3
salvi Scooby Newbie Member#: 188132 Join Date: Aug 2008	Yes, that one is connected.

11-24-2012, 01:14 PM	#5
Chaz2.5 Scooby Specialist Member#: 168181 Join Date: Jan 2008 Chapter/Region: TXIC Location: El Paso. Born K-Falls OR Vehicle: 2008 3.52 SWP 08 WRX 1999 EJ205'd RS coupe	^^^ This would be my guess for starters especially since you can almost pinpoint where the sound is coming from. That is either poorly connected or the hose needs to be replaced. Are you throwing any codes?

11-24-2012, 05:04 PM	#6
danger1138 Scooby Specialist Member#: 279525 Join Date: Apr 2011 Location: QUEENS NY Vehicle: 04 rex luger!	Or try the soapy water trick. Spray some soapy water around the bpv, those gaskets wear out from time to time..

11-24-2012, 05:46 PM	#7
salvi Scooby Newbie Member#: 188132 Join Date: Aug 2008	No codes, it ended up being the AICV o-ring/gasket. Replaced it and the hissing sound is gone.

11-24-2012, 07:13 PM	#8
danger1138 Scooby Specialist Member#: 279525 Join Date: Apr 2011 Location: QUEENS NY Vehicle: 04 rex luger!	The IAVC?

11-24-2012, 07:15 PM	#9
lavid2002 Scooby Specialist Member#: 226864 Join Date: Oct 2009 Location: southern NJ Vehicle: 2005 PSM WRX 18.5lb. 93 oct, DP, UP	Soapy water around a vacuum leak? Lol

11-25-2012, 12:04 AM	#10
danger1138 Scooby Specialist Member#: 279525 Join Date: Apr 2011 Location: QUEENS NY Vehicle: 04 rex luger!	No...that whole soapy water ish gets confusing..

11-25-2012, 02:52 AM	#11
salvi Scooby Newbie Member#: 188132 Join Date: Aug 2008	Yeah, the idle control valve.