With you mentioning the upper radiator hose did not get hot (while over heating? Or just running normal temp?) Maybe the thermostat had not opened yet?
Then the fan running forever?
Kinda hard to say what to tackle 1st?
I'd check the fan relay next, it may be working only intermittently, I'd also check the coolant temp switch. Sounds like one or the other is possibly not telling the fan to work at proper times. The switch may not be sensing correctly, or maybe the relay's contacts are sticking.
A experienced parts feller or manager, at a popular parts store may be able to assist you with 1st hand identification of these, on your vehicle.
Your owners manual or fuse box lids might identify the relay.
If nothing happening up there, replace the thermostat next.
All of the above are sorta simple tasks to check or replace, even for a novice DIYer.A buddy with some experience might help you out too, even just for moral support!
Unless you let it overheat a lot, your head gasket and head may not be damaged. They can be pressure tested, if it comes down to getting that far.
Let me know if you may need further assistance, and how it all turns out!
Saturday, July 9th, 2011 AT 3:39 AM