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No heat in my 2007 dodge ram 1500

Changed the thermostat. Hoses are all hot still no heat

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Posted on Jan 02, 2017

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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

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1 Answer

I have a 2004 Dodge ram 1500 5.7. Luke warm heat


are you talking about your heater core for heat in the truck ? is there a valve in the heater hose that you have to open to get the hoses hot to the core this is under the hood , follow the hoses , could be clogged core , does it over heat , or get up to temp should be about 190 normal temp for most motors why did you change these parts anyhow , did you use the radiator fix bars leak stuff that you put in , bars leak , if so you may have clogged your core , take the hoses off the core and blow it out ,pain in the but you went this far , ck for that valve to open

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Check if your rubber hoses that lead to the heater core have an inline valve. If the do, it sounds like it is not opening to allow circulation. normally they are vacuum operated

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I ahve a 2003 dodge ram 1500 , i have flushed cooling system and heat still blows cold. when i shut fan off for a few minutes and turn back on, it blows hot for a second then back to cold. i looked on both...


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My 2001 dodge ram 1500 will not get hotter than 160 degrees. I changed the thermostat and the coolant level is fine. What else could it be?


Now thats interesting.
I assume you are using the gauge on the dash to judge the engine temp, but you also said before you have no heat. The gauge could be off, but you would know by the radiator hoses if the engine is warming up or not.
Assuming the new thermostat is not defective, the coolant would have to be bypassing it somehow.
I would want to make sure there is no air pockets in the cooling system, and see if both radiator hoses are cool.

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I have no heat in my 1995 dodge 1500 4x4 just changed my thermostat and i have no heat inside the cab. I checked both sides of my heater core hoses and they are hot. what sould i do next


You should see if the vent near the heater core is stuck. I had that happen once. It was in the position for the AC so it wasnt pushing the heat. plusthe vaccum line that operates the valve could of broke / rotted.

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My 1998 dodge ram 1500 heater wont blow hot air I replaced water pump ,thermostat and radiator blower works fine just no heat.


check to see if both heater hoses are same temp when engine is at normal running temp if not heater core not flowing coolant may need to flush also make sure it does reach normal temp around 200

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did you use pure antifreeze if so remove it all and add a 50/50 mixture because antifreeze will not heat up good if its pure. needs water to allow good heat.

Jan 05, 2010 | 2000 Dodge Ram 1500 Truck

1 Answer

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.

Nov 19, 2009 | 2004 Dodge Ram 1500

1 Answer

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faulty coolant sensor .it will cause coolant fans not to come on.

May 09, 2009 | 2004 Dodge Ram 1500

1 Answer

The heater is blowing cold but the engine temperature reads high


Hi
I would first check to see if both heater hoses are hot to the heater.
if 1 is hot and 1 is cold the heater control valve is closed or the heater core is plugged.

Jan 14, 2009 | 2005 Dodge Ram 1500

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