1998 FORD EXPEDITION
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What can cause a thermostat to break on a 98 Ford Expedition? Also, what are the symptoms of a broken thermostat?
Dec 2, 2012 at 4:41 AM
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ASEMASTER6371
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broken??? if it broke it is from high pressure.

not opening or staying open, could be from coolant not being serviced and build up on the sensor

Roy
Dec 2, 2012 at 5:28 AM