Fan doesn't turn on, escort

94 LX auto. The fan turns on with the A/C and when I turn the engine on it runs for about 30 seconds. It doesn't turn on when it gets hot. I changed the relays and the temp sensor for the computer. There isn't just a sensor for the fan right? That's on GTs? Relays have power at them. From reading the repair manual it sounds like the computer reads the temp and then tells the fan to come on. What am I missing? Is the computer bad? Does the A/C use one of the relays? Can this eliminate any wiring problems to the relays? Is there a way to test the wiring at the plug of the temp sensor? It's a two wire plug.

I've tried the escort forums but dont get any replies. I've always gotten better info here anyway.
 
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