Thermostat

Yup. It's circulating. It shouldn't do that until the engine is warmed up.

The T-stat is at the end of the lower radiator hose. Feel the temp of that hose near the engine. If it's hot, the stat is open.

How do I know if it needs to be replaced? When I pull it out can i blow it out with a air compressor and put it back in? Or dose it need to just be replaced?
Thanks So Much for your Answer.

Sorry Doc, we posted at the same time. You finish.

Thanks! When I remove the Thermostat, can i blow it out with a strong air pressure and re-use it? How do I know if it will close or stay open when I put it back in. Or is that not a good idea?
Thanks.

Mr. Wrenchtech, How do I know if it needs to be replaced? When I pull it out can i blow it out with a air compressor and put it back in? Or dose it need to just be replaced? Thanks So Much for your Answer.

No, you can't blow it out with an air hose. That doesn't fix anything. I seriously doubt the stat is your problem. They rarely fail. It needs to be checked out closer to determine what is really wrong with it.

Look at the plate in the middle to see if coolant could flow through it. It should be closed to block fluid flow. They can stick open but that would be real unusual for a new one. What exactly is the symptom? If the thermostat sticks open, it will take way too long for the engine to reach normal operating temperature. You will also have cool air from the heater.

Just replace it-its cheap and good preventive maintenance-The fan should kick in @ 220degs. To check, use a DVOM measure the resistances cold and hot-