That sounds like a likely theory. One thing I didn't mention is that the thermostat was replaced a year ago (I didn't own it then) at the dealership, and the radiator was replaced at the same time. I wonder if the thermostat could get messed up that fast. Or maybe the tap water and cold weather made...
Thanks. So last night i flushed the radiator after learning that i should not have diluted my previous antifreeze with tap water. Everything seemed fine on the side roads this morning, but as soon as i get on the highway, it overheats again.
This morning my 2001 Pathfinder overheated as I was driving on the highway. If anyone can help, here are a few details: - It is REALLY cold here in Kansas City. Subzero at night. - Previously, it did not give me heat at idle, only when driving. - Assuming from this that there was air in the line, I ...