2006 f250 overheating

robaloroger

Petty Officer 2nd Class
Joined
Feb 16, 2010
Messages
123
Changed impeller. Inspected both thermos and they opened at 146-148 degrees. They both only opened 1/4in which I guess is normal, I am used to a merc thermo which opens twice as much. Check poppit and it looked clean. When I was flushing motor I decided to flush from on ear muffs also. The water from the pee hole was warm but the water from the powerhead flush hose was slowly squirting out and it was scalding hot. When on the water sometimes it will overheat at low rpms and high rpms midrange (1700-4800) seem to be fine. Not exact on the rpms but in the range. Thanks for any help
 
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