Discussion Starter · #1 ·
I have a 2006 Honda CRV. We just replaced the radiator with a new one as a result of a deer impact. I can't get the thing to run without overheating. Little or no coolant is flowing into the radiator. The temp gauge reads hot but the radiator is barely warm. When I turn the heater on full blast it goes down to normal pretty quick and the air is really hot. I removed the thermostat and checked it in boiling water and it opens. There are no restrictions on the bottom end of the radiator. No indication of coolant issues or corrosion. Only thing I can think of is maybe one of the plastic plugs that came with the radiator was not removed and it is blocking flow or the thermostat is in an air bubble or something. I am also trying to figure out the coolant flow path. I was thinking that is was reverse flow and hot water was going into the bottom of the radiator but by studying in the diagrams in the manual it looks like hot water comes out of the engine and into the top of the radiator as normal but maybe I am wrong. Why would they put the thermostat at the bottom or cool end of the radiator?