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1999 996 Cooling Fans

Engine

Vehicle Information: Model: 996; Year: 1999; Body Type: Coupe; Total Mileage: 34000;

Joel,I've been a track junkie for about 2 years. Last weekend, I was at Pocono and my temp guage went a little higher than normal for a track day and my red light started flashing. I added a little coolant to the system and the light never flashed again. However, the temp seems to be just a little hotter than normal. At the track, I couldn't get the coolant radiator fan (driver's side) to kick on unless I turned on the A/C. The oil cooler fan (on passenger side) would come on as normal, but without the A/C on, the coolant fan never came on. The outside temp was in the 40's, so I wasn't too concerned and the car temp never got above 215. On the ride home, the car ran perfectly normal with the guage reading straight up at 12 o'clock (190 or so).So, is there any rule of thumb as to how or when the coolant fan should come on to cool down the water in the car? Does the outside temp have an impact? Will the fan come on without the A/C on if the outside temp is high? Also, I don't believe the rear decklid fan never came on either.I've heard about the 3rd radiator and will do that sometime soon. For now, I've purchased Red Line's Water Wetter which a few friends have recommended. That should help somewhat.Thanks, Marty

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