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« on: March 18 2012, 04:16:17 PM »
Took the Buick out yesterday for a drive. On the way back I noticed the engine running hotter than usual, and by the time I pulled into the garage and popped the hood it was 230 F. When I popped the hood to check, both fans ( I have dual Spal fans) were not running. I have a manual switch that can turn the fan on and it worked. Later I started the car and let it warm up and the fans cycled properly. It wasn't until later that I realized that I could check the ecm sensor by using the scan master. I will check to make sure it is working correctly next time I take her for a spin. Other than that, isn't' there a back up switch that is supposed to turn the fan on? I need to read up on the fan wiring diagram.