Where is the thermostat for 2004 Ford F-250 diesel 6.0?

The 2004 Ford F-250 6.0L Power Stroke diesel doesn't have a thermostat in the traditional sense that you'd find on a gasoline engine, easily accessible under the hood. The 6.0L uses an Engine Coolant Temperature (ECT) sensor to monitor engine temperature and a thermostatically controlled electric coolant pump. The thermostat itself is integrated into the electric coolant pump housing. This means you can't simply replace a traditional mechanical thermostat.

To access the electric coolant pump and therefore the integrated thermostat, you'll need to remove several components, potentially including:

* Upper radiator hose: This might need to be disconnected to gain better access.

* Other components: Depending on your specific truck's configuration, other components might need to be removed for better access to the coolant pump.

It's not a simple DIY job. This is a relatively complex repair best left to a mechanic experienced with the 6.0L Power Stroke engine. Attempting it yourself without the proper knowledge and tools could lead to further damage.

If you suspect a problem with your cooling system, it's recommended to take your truck to a qualified mechanic for diagnosis and repair.