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| Registered Join Date: Aug 2004 Location: Wisconsin 
					Posts: 4,362
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				cold idles between 500 and 2000 rpm. Why?
			 
			A friend has an 82 SC. When she starts it, it seems okay other than it's very rich (smells bad)-way worse than my 77. After about a minute, the idle fluctuates rhythmically between 500 and 2000 RPM. That lasts about 20 minutes. Then it levels out. Any ideas?  Thanks. | ||
|  01-03-2007, 07:04 PM | 
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| Registered Join Date: May 2002 Location: Portland, Oregon 
					Posts: 12,668
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			Could be lots of things. Check this chart: http://www.pelicanparts.com/911/technical_specs/911_cis_troubleshoot.htm My car does the same thing when the mixture is off or it is very cold outside. 
				__________________ Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic | ||
|  01-03-2007, 07:55 PM | 
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| Registered Join Date: Aug 2004 Location: Wisconsin 
					Posts: 4,362
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			Thanks Harry. I was hoping it would be one of those- "Oh, that's a so and so......" But this is a help. | ||
|  01-04-2007, 04:24 AM | 
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| Registered Join Date: May 2002 Location: Portland, Oregon 
					Posts: 12,668
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			Bob, CIS can be a real pain if you do not carefully diagnose the problem. While I appaud those who are willing to go it by themselves, sometimes, if you have a bonafide expert nearby, it may be worthwhile to pay the bucks to get it done. My car was very surgey and I tried all kinds of things. I finally brought it to my mechanic who put it on the sniffer, noticed the mixture was way off, made a few adjustments and it has been running quite well ever since. 
				__________________ Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic | ||
|  01-04-2007, 06:11 PM | 
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| Registered Join Date: Aug 2004 Location: Wisconsin 
					Posts: 4,362
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			My plan all along was to recommend it goes to a mechanic. I was just hoping we would know ahead of time what she is in for. I'm making appointments for her car and also my car tomorrow. Thanks again.   | ||
|  01-04-2007, 07:08 PM | 
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