I doubt the clutch fan is the problem. If you told me it happened in stop and go traffic, I would say it could be the problem. Everything has been replaced. Also, I will assume the lower radiator hose isn't collapsing.
I hate to say it, but I feel you have one of two issues. Either the timing is an issue or you have a bad headgasket. (AFTER THOUGHT) Have you ever checked to make sure the catalytic converter isn't plugging?
Thursday, July 8th, 2010 AT 5:35 PM