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97 T-Bird, I recently blew out the number 8 cylinder cooling tube on the intake. Since then I have replaced the intake, water pump, t-stat (180), new cap, and fluid. I tested the ECT and Temp gauge sensors and they check out fine. When I hook up the OBD2 scanner it goes up to about 220 and the fan kicks on then shuts off when coolant hits 212 and it does this like a charm. Any other suggestions or ideas befoe I pull the rad. out for assumption of blockage? I dont want to overheat this summer due to something as simple as a stopped up rad. When I flushed it out it did flow pretty well, also the pressure test checked out fine.
 

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The Parts Guy
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7,326 Posts
The electric fan has two speeds. Per your description, it sounds like only the high speed is functioning. I'd start by sticking a meter on the low speed circuit to determine whether or not the fan motor is the culprit.
 
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