Question about 1999 Dodge Ram 2500 4WD
When its cold outside there is very little heat that comes out of the heater. put cardboard in front of radator no change.
You may have a couple different problems. the thermostat may be stuck open hterefore not allowing your engine to heat up properly. the coolant will just circulate through the engine and rad without heating up to proper temp. the other problem you may have is that you might have a plugged heater core thus not allowing the coolant to circulate through the core and give you heat.
I would recomend checking the thermostat and see if it is operating properly. an easy way to check it is by opening your rad when the engine is cold. start your truck and watch the coolant in the rad. If the thermostat is stuck open you should see the coolant circulating through the rad. This is not always the best way to check but it is an easy way to see. the other way which involves a little more work is to take the thermostat housing off and physically inspecting the thermostat.
hope this helps you out
Posted on Dec 24, 2008
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