Also, John Roberts, if this is helpful... - Saab 900 Bulletin Board - Saabnet.com
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Also, John Roberts, if this is helpful...
Posted by Bill S. [Email] (more from Bill S.) on Sat, 24 Sep 2005 00:05:07
In Reply to: Problem is..., Bill S., Fri, 23 Sep 2005 23:43:04
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While following recent posts on this (and trying to solve my own problem), I noticed that your problems are hard starting, high idle speed and excessive NOx. These are all consistent with an air leak. We already know about the starting issues, and lean running will cause high idle (that the AIC can't reduce further) and the associated high combustion temps (lean) will cause the NOx (see the curves in the attached link). The fact that you've closed off your idle air bleed screw and throttle plate and still have high idle are further evidence.
Good luck, man, I feel your pain. I think you need to methodically go through the possible leaks till you find the problem. See some of my recent posts for some lists of places to check. Good luck!
posted by 67.183.219...
http://www.autoshop101.com/forms/h56.pdf
Posts in this Thread:
- AMM problem solved, Jim, Fri, 23 Sep 2005 17:58:24
- pic of patient ( maybe)....., Jim, Sat, 24 Sep 2005 03:50:16
- So then how about this as a test for the rest of us, John Roberts, Fri, 23 Sep 2005 21:16:48
- Thanks for the update!, JeffR
, Fri, 23 Sep 2005 21:12:39 - Congratulations!, Bill S., Fri, 23 Sep 2005 19:49:19
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