Man, this is getting confusing. The entire time it was cool weather, temperature gauge was a little below the first mark. Actually when it failed was late afternoon and early morning, it was cool and damp. On the way back the day got hotter, I ended up running the AC the last 300 miles. Is there anyway to test a relay?
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Originally Posted by Dottore
I had the identical symptoms with my 1988 3.2 liter car. (And I mean identical. I could have written your post.)
Turned out to be a defective temperature sensor. This was replaced for about $100.- (Porsche part # 930 606 915 00) - and I never had the problem again.
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