Replaced HG, still overheating???

Wileyk24 · 10-07-2012, 08:00 PM

Ok so no change in the radiator fluid level. The overflow bottle dipped slightly, less than an inch. The car is not overflowing coolant onto the ground either.

So today I decided to test the thermostat. I took it out, checked the bottom an it is a 195 degree tstat. I proceeded to boil it and with a thermometer found it wasn't opening until well after 200 degrees. Brand new unit, not functioning properly. So I went to autozone to get a new one and the system said I needed a 180 degree stat. So I bought it and took it home and boiled it. The new one open as it should and seemed to open easier than the last. Time to install.

I installed the new tstat, topped off all fluids and took her for a test drive. Good news, I made it a lot further than just one block. I actually drove all around town and on the highway. The car felt good, but my temperature gauge is settling at 3/4 the way up the temp gauge and staying there. Regardless of how I am driving.

So when the car is idling the temp gauge stays right in the middle. Once I start driving city or highway it goes up to 3/4 and stays there. Once it is up there it won't come down until I shut off the car, even at stop signs it stays up there. But once the car is off, I turn the key back on so the gauges are powered and the temp gauge sits at slightly under halfway which is perfect...

Anybody experience this before?

10-07-2012, 08:00 PM	#8
Wileyk24 Stock Join Date: Dec 2011 Location: Middletown, NY Posts: 27	Ok so no change in the radiator fluid level. The overflow bottle dipped slightly, less than an inch. The car is not overflowing coolant onto the ground either. So today I decided to test the thermostat. I took it out, checked the bottom an it is a 195 degree tstat. I proceeded to boil it and with a thermometer found it wasn't opening until well after 200 degrees. Brand new unit, not functioning properly. So I went to autozone to get a new one and the system said I needed a 180 degree stat. So I bought it and took it home and boiled it. The new one open as it should and seemed to open easier than the last. Time to install. I installed the new tstat, topped off all fluids and took her for a test drive. Good news, I made it a lot further than just one block. I actually drove all around town and on the highway. The car felt good, but my temperature gauge is settling at 3/4 the way up the temp gauge and staying there. Regardless of how I am driving. So when the car is idling the temp gauge stays right in the middle. Once I start driving city or highway it goes up to 3/4 and stays there. Once it is up there it won't come down until I shut off the car, even at stop signs it stays up there. But once the car is off, I turn the key back on so the gauges are powered and the temp gauge sits at slightly under halfway which is perfect... Anybody experience this before? Last edited by Wileyk24; 10-07-2012 at 08:04 PM.