Ford Focus Forum, Ford Focus ST Forum - View Single Post - temperature gauge reading lower than normal
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Old 11-25-2012, 12:22 AM   #6
amc49
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There is a small hole toward outer edge of stat, if straight up as it should be the system bleeds almost instantly. 5 minutes more than enough.

No way do air pockets make for underheating, rather they do the opposite as do any pressure leaks as a result of the broken plastic hose. That bleeds quick too.

OEM stat opening and closing mean nothing, you must check for absolute 100% closed when cold if chasing your too cold problem.
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