Subject	its from the engine warm up cycle
Posted by	DE944 on July 25, 2011 at 10:59 PM
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In Reply To	Proper gas/air mixture indicators posted by Pittsman on July 25, 2011 at 03:39 PM
Message	The engine warm up cycle on AIV equipped cars runs rich until the temp sensor tells the ECU that it is warm, AND the o2 sensors are warm enough to send a stable signal. After warm up, the ECU will run a slightly richer mixture to keep the cats hot. There is no adjustment for this. Make sure that when warm the A/F ratio is correct, o2 are functioning correctly, and all "tune" related items are correct. Hope this helps.
Follow Ups	Proper gas/air mixture indicators - Pittsman 15:39:11 07/25/11 My Z gets it too - kind of depends on how heavy - jzack 19:18:09 07/25/11 its from the engine warm up cycle - DE944 22:59:43 07/25/11
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