I appreciate the replies! If you are talking about the coolant temp sensor on the heater rails then I put a new one on there a couple months ago due to none accurate reading on the temp gauge inside the car. It was always trying to tell me the engine was hot with it not even running for a couple minutes. I would turn it off and make sure it didn't overheat but the hoses weren't even warm and the radiator was cool as well. So I replaced it. It doesn't do that anymore... Now this morning I tried to start the car, it was 22 degrees out, and spent 20 min trying to do so. I didn't crank it for the full 20 min but I did let the fuel system prime about 5 times before I even tried to start the car. It cranked but never even tried to start. I would crank for 3 sec and let off for one... Nothing. Sprayed starter fluid in the throttle body and reattached the cold air intake. It didn't react to that either. Which made it seem like a spark issue... It has new distributor (reman), plugs, wires, cap and rotor, and coil. So idk. I had to drive my 67 cougar to work instead of the Stang today. Killed the wallet... But when I got home it was 45 degrees and I primed it twice. Car started right up... Sorry this is so long. Trying to be thorough. Thank you guys!