Wow -- you did everything related to cooling.
So are you thinking a clogged catalytic converter is the culprit?
If it were me, I would verify that all of things I replaced are working correctly, beginning with the temp sensors (both for the guage and the engine coolant sensor), the electric fans, and that the water pump is actually circulating water.
Sometimes a new part is actually as bad as the old one.
My Eclipse cracked the radiator. I put a new one in -- still overheated, then I ended up replacing everything, all hoses, radiator fans, coolant termp sensor and new thrmostat. One of those fixed it.
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Monday, April 20th, 2009 AT 2:38 PM