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Join Date: Mar 2003
Location: San Diego, CA
Posts: 4,906
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I dont mean to come off like a jerk, but seriously, pressure test your cooling system because there is no point at us all speculating at what it could be. There are a handful of possibilities that are causing this and a proper pressure test will identify all of them.

One thing, does the car fire on 3-cylinders after you ran the car up to temp and let it sit for an hour or two? That is a tell tale sign of a headgasket problem.

Overheating only at idle leads me to believe your high speed fans are not working. Did you ever jump the fan switch connector to check the relay?
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Jon
1988 Granite Green 911 3.4L
2005 Arctic Silver 996 GT3
Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1
Old 10-30-2006, 06:30 PM
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