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OK.... today, drove along with great heat at 45. Down shifted into third and maintained speed at increased RPM's (tach is intermittent as well, so wasn't able to get #'s) and heat disappeared. This was with monovalve plugged in.
Drive home, monovalve unplugged, same exact experience. Heat at 45 in fourth, dropped to third and the heat went away.
Undoubtedly RPM related.
Was too cold today to jump out and start grabbing hoses to see what was hot at different times in the sequence, maybe tomorrow when the temperature isn't single digits....
Wondering if there might still be an air pocket in the cooling system....
I just changed the thermostat and radiator over the last two weeks, so the system has been open a couple times.
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On some nights I still believe that a car with the fuel gauge on empty can run about fifty more miles if you have the right music very loud on the radio. - HST
1983 300SD - 305000
1984 Toyota Landcruiser - 190000
1994 GMC Jimmy - 203000
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