Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
So many ?'s. Im pretty confident I can help ya out, just need some info.
1) Any coolant loss?
2) How did you go about filling the coolant after T stat?
3) Can you hear a change in your fan when its hot?
4) Is fan hard to turn by hand when cold?
5) Sounds like we have some coolant loss.
6) blowing warm air on the inside?
7) 110% sure t stat is pointing the right direction?
8) both hoses warm when overheat happens?
ill check this later and see what we can come up with.
Ahh the good ol post and leave. Water pump could totally be bad, if it was leaking due to a bad bearing we would hopefully see some coolant loss. If the impeller was worn away (more common on plastic fins) you would see it in lack of flow, that you could hopefully tell by feeling the hoses.
I agree it seems as though the problem was present before and after. However you could very easily also have a situation where the Tstat was stuck and in replacing in OP didnt get all the bled out or installed it in the wrong direction. So two different problems still overheating before and after. Just gotta find the cause.
Hopefully OP gets back to us
Sounds like you had the issue before changing the thermostat, did you flush everything out with water especially the radiator?
Answer Tlang's questions and mine when you get a chance!