Question about 2002 Mazda Millenia
First of all, mark the electrical connectors around the thermostat with numbers. If I remember, there were six of them. After marking, disconnect them. Remove air intake boot from injector. The thermostat is at the end of the metal tube that has a couple of rubber hoses clamped to it. Un-clamp the small hoses. I found it easier using a 1/4" ratchet and 10mm socket to loosen the right bolt on the thermostat housing. To get the left bolt, a 10mm long handle box wrench works best. Do not try to bend the small tube that is welded to the larger tube. You might end up with problems you don't need. When you get a new thermostat, also get a new rubber gasket. There is no service sheet gasket for this type of set up. The gasket for the thermostat is round and has a groove on the inside so it fits around the perimeter of the thermostat and then is placed inside a rabbit fit of the housing. When you tightened up the two 10mm bolts, that will seal it. Hope this helps!
Posted on Sep 02, 2010
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Posted on Jan 02, 2017
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