08-23-2023
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#7
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Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,788
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Re: Temp goes from 200 to 225 when A/C is on
Quote:
Originally Posted by Young1
I am experiencing the same thing as OP. Never have before. All is clean. Is it possible 30 year old thermostat is not fully opening? I ordered an NOS Stant 14068 on eBay today.
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Marc Haibeck suggested at one time the older Stants will deteriorate (Decrease in FUll Open Area) by up to 15% as they age. A thermostat with over 50k miles generally opens 5 degrees later and opens about 85%.
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