As I recall your fan turns on at either 240 degrees or 250 degrees. I think this is at the second mark.
Bruce Anderson says 250 degrees is TOO HOT.
He suggest getting a thermo- switch from one of the water cooled POrsches I think he mentions either a 928 or a 944 as their fans turn on at 200 degrees.
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Nick Hromyak
'85 Carrera 7 & 9 Fuchs
Havin' Fun in Sacramento