I changed thermostat and heating core. Hoses have been flushed. Truck (2010 Dodge Ram)temp gauge started running hot. Upper radiator hose hot and lower is cool. Is it safe to drive?

  • Definitely need more info here, the top hose gets hot first ie hot water rises -even without the action of the pump. – Solar Mike Jan 19 at 19:08
  • Is the upper hose hot all the way to the radiator, or just close to the engine. Is any part of the radiator hot? – John Canon Jan 23 at 5:15

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