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I have a 01 dodge ram pickup the heater doesn't work in both hoses to the heater core r hot a brand new radiator and thermastat put it and the heater blend door was broke so I have function to move the door but it only blows hot for a few sec then cool what coyld be the problem?

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  • 11 Answers

Do you have heat when you rev it up? You could have a blocked/clogged heater core. Try back flushing the heater core in both directions to try and clear any deposits. Also if there has been any kind of stop leak added it can clog heater cores right up. Also verify that temp blend door stays in proper position.

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

rcaston19
  • 39 Answers

SOURCE: Cool air blowing from heater, even when on high.

if the heater core is bad, it will leak or not flow water. even tho you can "hear" the blend door working, it may not be actually moving inside the box. check to see if the actuator is connectd to the blend air door. You may be hearing the actuator moving but not the door.

Posted on Nov 22, 2008

  • 39 Answers

SOURCE: 2002 jeep grand cherokee heater doesn't blow hot

If ythe heater core is not bad then I would replace the thermostat, this will stop the warm coolant running up to your engine go to the heater core.

Posted on Feb 01, 2009

  • 92 Answers

SOURCE: i have a 2002 dodge ram 1500 pickup w. hwat issues

is this a problem w/ the interior vents? maybe stuck venting in outside air rather than from the heater box? did the heat only stop working after the radiator/hose install? if so, then you probably have a big air pocket stuck in the heater core.

Posted on Sep 30, 2009

  • 7353 Answers

SOURCE: 2002 dodge 1500 Changed radiator, thermostat, and hoses. No heat

Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.

Posted on Nov 19, 2009

  • 52 Answers

SOURCE: my 97 dodge ram 1500 4x4 5.2 l i had the heater

could be air in the system or the thermostat could be in up sidedown .

Posted on Feb 09, 2010

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1 Answer

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