Cobalt Having a Hard Time Starting After Replacing the Radiator.
I just replaced my radiator after hitting an small animal. I replaced the fluids with regular dilauted antifreeze. The people at the local Advance auto said it was fine to do that since their house brand is able to be used in any vehicle regardless of color. Will not cause a chemical reaction. Since changing the radiator I have had one heck of a time starting my car after only driving for a short period of time. I leave the car for anywhere from 5-30 minutes and it's having a hard time turning over. It starts perfect cold.The oil is fine so I think I'm safe to say that the head gasket isn't crack or blown. I'm losing my mind over what can be causing this. Any help will be appreciated.
---------- Post added at 01:58 PM ---------- Previous post was at 01:46 PM ----------
Highest temp it ran was 219 degrees since replacing the radiator. Could this be an ECT sensor going bad.