Question about 2001 Dodge Ram 1500 Truck 2WD

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Heat does not come on when truck is not moving 2002 Dodge Ram

2002 Dodge Ram heat does not come on when truck is not moving. When trruck moves the heat is very good.

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  • ksfortner Dec 13, 2008

    I have the same problem 02 dodge ram 1500 4wd but heat works fine when driving but when idling it blows cold air. please help

  • sueski36 Jan 04, 2009

    we have the same problem. also there is only heat out the passenger side.

    dodge is a 2002

  • mailmd Jan 14, 2009

    i have a 1999 dodge 1500 sport and have the same problem very cool air went you let of the foot feed or just idle fairly good heat while RPM's are up

  • Anonymous Jan 17, 2009

    i have the same problem with my 2001 dodge ram 1500 it blows cool to warm air when itleing and warm air when rpms are up ive changed the antifreeze and the radiator cap and the thermistat and same no change ive even put it on ramps and let it idle for 30 minutes because some one told me it could be a air block didnt work mow some one tells me that there are bleeder valves on the top of the motor and they need to be bled well im going to try it and find out i will let yall no what happens but best of luck to yall its a proccess of alimination.....rich

  • milehieagle Feb 02, 2009

    I have this issue as well. 2000 2500 Dodge pickup. The heater core leaked so I replaced it and now no heat at stop lights. Replaced belt, thermostat, water pump and have removed all the air from the cooling system (unless there is some super secret way to doing this that I don't know about). It has no leaks, the blend door servo is moving the door all the way open, the heater core is hot enough to not be able to touch it and still no heat unless the engine is above idle. I'm pulling my hair out!

  • Anonymous Feb 02, 2009

    I changed the thermostat and anti-freeze but my truck still has the
    problem of blowing cold air when coming to a stop and even blows
    colder air when the temperature reaches below zero degrees.

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Hello I was just browsing and saw this problem. It turns out i have had two vehicles with this same problem (both chevy trucks). My solution was to add antifreeze to the radiator. See my understanding is that when your vehicle is at a hault, there isn't enough antifreeze to circulate through the heater core. But when you are driving the motor circulates what is there to all components that require antifreeze. Again this is just my own understanding and it worked on multiple vehicles that i own.

Posted on Dec 15, 2008

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You mean blows cool when idling? Warmer when engine RPM's increase?

Posted on Nov 24, 2008

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