1st gen overheating, newly replaced cooling system parts

[BaseRunner]

So after installing the new fan clutch I have a little bit of slight rough idle at start up that lasts about 30 seconds and goes away, and every now and then at a stop light. Am I having head gasket issues or is this just because its cold outside and the oil needs to warm up. Btw I don't have any oil in the coolant and vice versa, I also dont see white smoke from my tail pipe and im not having CONSTANT over heating issues, I also changed my brake booster, plugs, wires, distributor rotar and cap not too long ago so I doubt its that. What could be causing this slight rough idle?


After researching a bit more im wondering could this be a cold start injector problem?

 

[Sharpie330]

Okay, cool. I thought I'd seen a writeup where somebody used a meter to check resistance through the therm at different temps. If it's all mechanical I must be thinking of something else.

You can check the resistance of temperature sensors from cold to hot temps to verify that they change resistance at the manufacturer specified scale.