Do you mean you have the stock oil cooler or has the stock oil cooler been removed and a bypass cooler kit installed with the oil cooler blocking the fan intake area?
Yes, as you describe it. The oil cooler is mounted behind the fan shroud and covers fan intake area. I took the entire fan shroud & oil cooler assembly off this weekend and did not find any blockage in the fan/shroud/oil cooler.
The set up you have does not work. It was proven not to work over 30 years ago. Convert back to a stock doghouse with all the tin and correct fan. You could make it work better by relocating the cooler and using a thermostacially controlled electric fan to cool the relocated oil cooler at idle but with out a stock oil cooler the cylinders actually run hotter. Vw designed the shroud to compensate for the cooler location. I just drove my 2180 over 80 miles today in 110 degree weather my engine ran 180-200 degrees the entire time.
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