Subject	afr too low at low rpm
Posted by	hijack on May 07, 2011 at 9:59 AM
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Message	i've been trying to track down this issue. when i first start my car my afr is rock solid at 14.7 and it basically stays there until it starts to warm up and the idle speed drops. With an rpm of less than 1200 my afr drops to 12 and stays there. If is give it gas in neutral, as soon as the rpms get above 1200 the afr goes back to stoich. Any ideas why a low rpm would yield a rich condition? something else that may help ... my car stalls while warming up ... the afr goes up and the car cuts out. this usually happens a couple of times before the car gets up to operating temp. btw i have dual maf / dual pop and an safc. thanks.
Follow Ups	afr too low at low rpm - hijack 09:59:12 05/07/11 Re: afr too low at low rpm - Noncon (STL) 17:49:57 05/07/11 Just as an FYI, the mixture... - kickerzx 12:21:12 05/08/11 Vacuum leak.... - zx299 02:11:29 05/08/11 vacuum leak would cause high AFR, not low (n/m) - aliaZ 19:56:18 05/08/11 14.7 on a cold motor IS high. (n/m) - zx299 05:01:41 05/10/11 perhaps, but a vacuum leak wouldn't explain the 12 AFR - aliaZ 06:18:15 05/10/11 A faulty AAC valve &/or air regulator could (n/m) - zx299 03:29:03 05/12/11 elaborate please (n/m) - aliaZ 15:12:04 05/13/11
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