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Re: New water pump and overheating. What gives?
Does the motor actually feel extremely hot?
My temp gauge went nuts on my 64 GMC after I resealed the motor. Ever since I popped in a new sending unit the resistance or ground has never been right. The gauge will peg to Hot and the engine is only 150 degrees!
Might grab a temp sensor and see if the gauge is lying.
Also if the radiator was plugged you have to consider that the heater core may be plugged as well.
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