Recently the cooling fan on my 91 RS quit working. The temp sensor for the fan broke off so it won't come on over 220. But I could still turn on the A/C and the fan would turn. Now it won't come on at all, even running the A/C, and there is no power to the plug going to the fan at all.

Any help would be appreciated.

 

That would be your temperature fan switch located on the driver side of the motor. should be a green wire going in to it, and i believe it screws into your head. be careful coolant will come out when your taking it off. mine did that to me before also so i've been through all of that bs.

 

You won't have power to the plug on the fan unless the ECM tells it to turn on. The reason it came on with the AC on is because the fan is designed to run with the AC on. Would need to know more info to see why it might not be working now. Either way, Replace the temp sensor and related connectors and all should be well. Or at least better than it is. Hopefully.