To replace a thermostat on a 2000 Ford F-250 V10, drain the radiator. Locate the thermostat on the top hose assembly and remove the screw. Replace the thermostat and refill the radiator.
arnie frerichs
Replace it with a new one.
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the thermostat is located on the front side of the intake manifold easy to get at
To replace the thermostat on a 1995 Ford F250, the non-working thermostat must be removed. The radiator hose must first be removed, then the non-working thermostat unbolted from the intake manifold. The area needs to be cleaned of any old seals and debris. The new seal needs to be placed in on the intake manifold. The new thermostat is then placed on top of the new seal and secured. The radiator hose is then reattached.
great write up with pictures here: http://www.ford-forums.com/ford-explorer/10937-how-replace-thermostat-4-0l-ohv-v6.html
I paid $96 with service today (12/13/07)
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