Subject	For the years with AIV the motors run rich at idle.>>>
Posted by	SWL on September 10, 2001 at 10:51 AM
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In Reply To	hmmm... AIV system injects air into the exhaust pipes posted by Bernie on September 10, 2001 at 10:39 AM
Message	The AIV's inject air before the cats which gives them the air (oxygen) they need to burn off the excess fuel. By unplugging the vacuum line you put the extra air in at the intake. Wherever the air gets into the system the HC's should be lowered. The cats won't work if there is no oxygen available for conbustion.
Follow Ups	My Stock TT did not pass inspection>>>>>>>> - Wolfman 08:11:32 09/10/01 somebody told me about a little trick with the FPR.... - aZinAZoo 08:33:43 09/10/01 It's the fuel dampener... not the fuel pressure regulator. - Bernie 08:54:19 09/10/01 Can you describe the location so I can give it a try. (n/m) - Wolfman 09:04:21 09/10/01 here's a picture for u of the fuel dampener... - Bernie 09:18:22 09/10/01 Thanks Alot for the info...I'll give it a try. (n/m) - Wolfman 09:38:17 09/10/01 Oh, ok. Any idea why or how this works? (n/m) - aZinAZoo 09:08:20 09/10/01 Heh, no clue here. :) Anyone else know? - Bernie 09:19:39 09/10/01 Do you simply pull it and replug it or let it stay off for>> - Wolfman 09:40:41 09/10/01 Re: Do you simply pull it and replug it or let it stay off f - the other got rice? 09:50:34 09/10/01 lack of vacuum -> lean a/f mixture (n/m) - the other got rice? 09:49:12 09/10/01 i alway thought all it did was smooth out the fuel... - aZinAZoo 10:01:21 09/10/01 i think SWL got it right... that makes sense, it's not the - Bernie 10:35:07 09/10/01 It lets air into the intake that the MAS dosen't see>> - SWL 10:17:30 09/10/01 Could I simply have the AIV's adjusted to fix the problem (n/m) - Wolfman 10:22:45 09/10/01 Not sure if ajustable,but could verify they are working>> - SWL 10:40:42 09/10/01 hmmm... AIV system injects air into the exhaust pipes - Bernie 10:39:21 09/10/01 For the years with AIV the motors run rich at idle.>>> - SWL 10:51:11 09/10/01 Here's a trick - ~2turboz 09:46:04 09/10/01 The max HC is 220. I was 550 and we don't test on rollers>>> - Wolfman 10:19:07 09/10/01 heres the same response i gave you in tech, - Chris (NJ) 10:36:23 09/10/01 Bad AIV's can cause this too. - Marshall 11:45:00 09/10/01 Re: My Stock TT did not pass inspection>>>>>>>> - snave 12:56:52 09/10/01
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