Radiator Fans 08 Boxster Base
 

I tested my fans today(or thought I did) on my 08 Box Base with my Durametric. When I activated the fans I only heard only the R side fan go on and it didn't sound that good, sounded sort of labored and then it stopped after a few moments. Didn't have to stop it with the durametric. Happened when I repeated the test. What is my next step? Thanks V