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12-05-2012, 02:45 PM #1
6.2 Diesel cold weather over heating problem
Recently my Suburban 6.2 Diesel has begun to over heat in cold weather.
When I start it up,the temp remains low,untill it quickly rises to danger hot.All the while my Heater will not blow Hot air.Then I pull over to cool it down,then afterwards the motor runs at normal temps
I have changed the Thermostat,drained flushed and refilled the Radiator with an antifreeze mix,there is visible water flow across the Radiator
I had a theory that perhaps some gunk had frozen in the Cooling system,thus forming a obstruction which caused the Engine temp to rise,after stopping the Motor the plug would melt and normal cooling would resume.
This was however not the case.
Thankyou in advance.
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