So, I've had this cooling issue with my 95 cobra. Stock cooling system. It seems the low-speed fan won't come on, it waits for the high speed fan to kick in. It comes on when the temp needle is on the A-L area of the guage, brings it way back down. I unplug the fan relay plug and reconnect it and it works properly, kicks in the low speed at straight up and down on the guage, but it only does it for a little while before it reverts back to its same old tricks. Any ideas??