Thermostat stuck opened

[SCPowerstrokecowgirl]

Hey guys
Was wondering if you had the part number for the thermostat? and why are they so easiley stucked open.i was running 190-192 all day seems little low...how hard are they to change

[Lilpooh]

Your temps are right on the money. When you start seeing 185 in the heat of summer, then start looking to replace.

[SCPowerstrokecowgirl]

Okay i thought when it hit 189 or 190 is when it was stuck opened oooops

[Six0~Stroker]

yep what he said!!!

[howell_jd]

...ditto...

Part number is RT-1169 by the way.
[RT-1169]Motorcraft Thermostat-RT1169-Ford Diesel Trucks - Diesel Filters,Additives,brake rotors, and brake pads for Chevy, Dodge and Ford Diesel Trucks

Jonathan

[Term3]

Yes, they usually fail fully open. Only seen one that stuck partially open.

[SCPowerstrokecowgirl]

Thanks guys!