97advantage

Not sure exactly where you are at either but I have seen a few trucks come into our shop with sticky thermostats.........If your SCT never shows any temps out of range then I would guess faulty sensor too but now that it is starting to get warm, it could be unmasking a stuck thermostat that didn't show itself during the colder months.

F-2 Speedy

iTrader: (6)

Both the T stat and coolant sensor are side by side I'm going to replace them both while the upper radiator hose is off.

F-2 Speedy

iTrader: (6)

thanks Ken

F-2 Speedy

iTrader: (6)

Id think if it was a faulty T stat ( stuck closed ) that the truck would over heat but it does not,,,,,anyway going to replace it anyway

kidturbo

Thinking back, there was one time I saw that light come on. It had actually thrown the electronic clutch off the fan and left a dent in the hood. Ripped wires out of the plug, and by the top of the hill, she was HOT!!.

Besides that one time, my 6.0L only had smell sensors. When I smelled coolant, it was always blowing out the degas bottle, which meant it was time to change head gaskets again.. So I would switch it back to economy tune to save money for another set...

Smoke eater

What did you ever find out? Did the t stat and sensor fix your issue?

F-2 Speedy

iTrader: (6)

My mechanic will be back in town on monday and get it fixed, Ill update then........thanks all for the input

97advantage

I'm interested in what the issue is. Recently had a friend that had this issue. Problem with the factory gauges is that they only tell you when something has gone drastically wrong....aka when its too late. keep us updated!

Tractionless

Probably electric fan clutch if it's anything like my 6.4, they self diagnose failure. Ford-trucks.com forum is your friend.

F-2 Speedy

iTrader: (6)

Ive not done anything yet, another 6.0 mechanic thinks it might be the gauge cluster ??