- Sep 5, 2006
- Charlottesville VA
Not sure but just a theory...when you have a bubble of air in the engine could it run down to the thermostat and the T stat not opening because the air is cooler than the water and doesn't melt the wax in the t stat to actuate it? But if that were true, wouldn't you need to park the vehicle downhill to get the air bubble away from the t'stat? Most threads I've read talk about jacking the front of the truck UP to burp it.