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ttiger79, Auto Mechanic
Category: Car
Satisfied Customers: 1257
Experience:  ASE Master Certified, Certified advanced level engine performance
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2000 mazda 626: overheats..the top radiator hose is..lower hose..inlet

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I have a 2000 mazda 626. It overheats and the top radiator hose is hot but the bottom isn't. Accordng to a hayes manual that I have the thermostat is on the lower hose engine inlet? It has a v6.
The description of you problem sounds like the symptoms of a bad thermostat. You are correct. The thermostat is located on the engine block, and the thermostat housing attaches to the lower radiator hose. Here's a diagram for you:

You will have to remove the ignition coil to more easily access the housing, and make sure the notch on the new one aligns with the notch in the housing:

Let me know if you have any more questions!
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