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Haven't changed out the water pump yet. Didn't pay attention to the bottom hose collapsing. No offense taken, the thermostat is installed the correct way. I actually used the old one for a minute cause I thought the new one was defective. Same result. Part # THM 546095 Product line : NAPA...

Wasn't overheating before, radiator had a crack. Decided to change the thermostat since I was tearing it apart. I can't make it down the street without it overheating. Doesn't happen on idle.

So I replaced the radiator and thermostat on my 07 jk. Burp the system & still overheating. The top radiator hose & the 2 coming from the heater core are all hot. Only the lower hose is cool to the touch after jeep has been running. I was thinking maybe my water pump but not sure how to tell...