Here are a few things to look at.
First thing is the Fan Clutch - with engine cold spin fan it should spin pretty easy. Now run engine to operating temp then turn off, spin fan again it should be hard to spin. If spins same as when cold replace Fan Clutch.
Next - with engine cold remove radiator cap. Start engine, look for bubbling and smell for exhaust fumes. If has exhaust smell, then yes you do have a blown head gasket.
Also feel upper radiator hose, be carefull could be hot, if with engine at operating temp upper hose feel cold or not as hot as you think it should be then could have stuck thermostat.
Check out above and post findings.
Thursday, May 28th, 2009 AT 11:23 PM