magicv8
Well-known member
The temps had been unstable and surging coming off expressways. I have a Griffin BB radiator and a 16 inch Derale fan in the stock shroud opening - with Derale temp control. I've been trying mods to get the thing stablized. Some hot days it works perfect, some cooler days unstable - then hotter days unstable - more stable with the A-C on but running warmer. I stuck a penny sized piece of 3M strip caulk on the front of the radiator where the Derale fan temp probe is inserted in the rad fins - ALL the problems went away.
Evidently the probe was getting enough cool air at 30mph+ speeds to suppress the fan. With the caulk preventing the probe fom getting cool air, the fan cycles between 170.5F and 179F and the engine never gets above 180F - even with the A-C running in city traffic. Is the new technology great or what?
Evidently the probe was getting enough cool air at 30mph+ speeds to suppress the fan. With the caulk preventing the probe fom getting cool air, the fan cycles between 170.5F and 179F and the engine never gets above 180F - even with the A-C running in city traffic. Is the new technology great or what?