Truck 5.3 Thermostat - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Houston Ben · 12-30-2015, 04:36 PM

Hi all,
I have a 2011 5.3 was running it with water for a while with stock thermostat. I recently bought a new thermostat and filled engine and rad with 50/50. Now the engine runs hot, up to 230 if I am going 80 mph. With the old thermostat is stayed between 190-200, does anyone know why this would be?

Also, the new thermostat was a lot longer than the stock one (still fit) but it is supposed to be a direct replacement, anyone else have a problem with this?

Ben

12-30-2015, 04:36 PM	#1
Houston Ben Registered User Join Date: May 2013 Location: Houston Texas Posts: 713	Truck 5.3 Thermostat Hi all, I have a 2011 5.3 was running it with water for a while with stock thermostat. I recently bought a new thermostat and filled engine and rad with 50/50. Now the engine runs hot, up to 230 if I am going 80 mph. With the old thermostat is stayed between 190-200, does anyone know why this would be? Also, the new thermostat was a lot longer than the stock one (still fit) but it is supposed to be a direct replacement, anyone else have a problem with this? Ben __________________ 1986 C10, 2011 5.3 w/6L80, 3.42 w/ Detroit TrutTrac Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=584532



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.