By Jesse C Stiggins
After reading the April 2010 example concerning Mazda overheating I realized this may be more of a problem than just with Mazda. I had exactly the same problem with my 2004 Explorer. It overheated twice with no warning until the gage was pegged out. The first incident was caused by a stuck thermostat and the second by a leaking thermostat housing hose. The engine had to be replaced after the second incident. The Explorer is the most heavily instrumented car I have ever owned, but the overheating warning system is stuck in the 60s when engines were slow to overheat and much more forgiving.
This can be a real problem when driving at turnpike speeds and the engine suddenly seizes causing loss of power braking and steering. I urge anyone who has had this problem to file a report with the office of defects and recall as the National Highway Traffic Safety Administration.