I have replaced every thing on my 2001 ram. Still over heating I bypassed the heater core to make sure it was not bad. Will doing this make a difference [Bypassing]or could it make the pump cavatate. The only thing left is heads or air. I am going to try the air bubble today to see what happens.

Did you replace the radiator?

Yes I have replaced the radiator, I did go with a 160 thermostat to see if that would help it did not. No water in oil or water flushed the system.

This link may help:

https://www.askmehelpdesk.com/cars-t...tml#post235973

Be sure to properly purge all air from the cooling system--check your Owner's Manual.

Also, ensure the problem is not with the temperature gauge or the sending unit:

https://www.askmehelpdesk.com/cars-t...ml#post2043857

The hoses have good pressure. Temp gauge is good I will check on the purge. It push water out yesterday morning it was running at 200 not a lot. It takes about 30 min. To get to that temp on the highway.

Is the connection to the sending unit fine?