DODGE RAM FORUM - Ram Forums & Owners Club! - Ram Truck Forum - View Single Post - heating problem need help
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Old 12-09-2011, 11:37 PM
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First of all, Welcome To The Forum!

Secondly, only one thread is needed for this subject. I moved your first one to the proper section. Then I deleted the second one you just posted.

Lastly, I don't think the tach reading has any bearing on your heat problem. I believe you have a heater core problem. It may be plugged and not letting the heat transfer to complete the cycle.

The puzzling thing is the weird fluctuation in temp while in motion. I would think that it would rise when you come to a stop or are at idle, then lower as you move down the road, moving more air through the radiator.

How new is your coolant? And have you had the system flushed recently?
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