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Heater blows only luke warm

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nc dodge

Feb 1, 2009, 4:40 AM

Post #1 of 2 (2538 views)
Heater blows only luke warm Sign In

My 2001 dodge ram heater went out a few weeks ago. It blows, but only luke warm, when I turn the fan up, it is more like cool air than warm. I recently had the water pump replaces and the radiator flushed. help!

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Feb 1, 2009, 6:54 AM

Post #2 of 2 (2534 views)
Re: Heater blows only luke warm Sign In

Hmmm? First make certain system is really filled both at radiator and not just where you see it at recovery tank. It also should have the antifreeze concentration checked to NOT exceed 50/50 or a reading of -34F when checked. Too strong doesn't work well at all.

You said radiator was flushed - is that to say just the radiator? Was or is it a bit dirty/corroded? If so it suggests heater core and the rest of the cooling system is also.

One more: Does the operating temp go up to one NORMAL spot on gauge and stay there once warmed up? If not there's a problem with thermostat if running too cool,


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