trident

Ok, here are my other suggestions then: It could be that both temp switch A and temp switch B have fouled up. This could cause the problem you are seeing. Since two failures are generally pretty rare, I would turn my sites to the fan control module. There is a test procedure called out in HELMs that tells you how to troubleshoot this. You can test both of your switches. I believe temp swith B is easier to get to. Simply get a multimeter, a thermometer. Look up the specs for the switches (ie, when they are supposed to close the circuit). By doing this, you can inexpensively diagnose your switches without buying new ones and being dubbed a "parts changer". Hope this helps.... If you don't have a Helms, I can see if I can pull up the specs for you.