I have a 94 250 Ram conversion van. The heat in the front is not that great when winter is in it's prime 30 and under. Yet the rear vents seem to blow out hot air still. Are there 2 heater cores for a conversion van. And if so, or if not is there any way I can change the houses around to have the back and front switch to hopefully have the hotter air flow up front without having to go through all the hassle of changing heater cores. I'm thinking of getting to do whatever I need to before the changing season happen. I know, my thought process is taking away from the now with the summer here. But now is the time to do whatever needs to be done.
Dodgevanman
08-21-2008, 08:40 AM
yes..there will be two heater cores..one for the front and one for the rear. The housing are totally different so swapping them won't be feasible.
Sounds like either the front heater core is plugged up or the blend doors aren't opening/closing properly.
B200Bill
08-21-2008, 04:13 PM
when my heater wasn't working, I disconnected the hoses and backed flushed the core. then I front flushed it till the water was clear. Now I have heat. This might be worth trying before spending money on a new h-core.
bert57
08-21-2008, 08:13 PM
yes..there will be two heater cores..one for the front and one for the rear. The housing are totally different so swapping them won't be feasible.
Sounds like either the front heater core is plugged up or the blend doors aren't opening/closing properly.
What I was thinking was swapping the hoses around at the 2 Y-connectors under the hood where you would backflush. Since there are 2 sets of heater hoses, I thought by switching them to each others Y-connection, I would be actually switching the front with the back. That is if that's how they work.
bert57
08-21-2008, 08:18 PM
when my heater wasn't working, I disconnected the hoses and backed flushed the core. then I front flushed it till the water was clear. Now I have heat. This might be worth trying before spending money on a new h-core.
I had someone do this for me a year or so ago. But I 'm not sure it was done right. So I 'll have to try it for myself. Thanks
B-300
08-22-2008, 12:26 PM
Dirty coolant or excessive stop-leak can plug a heater core up.
I have repaired both, one GM, the other a Ford and they were clogged so badly in additon to a water hose back-flush they needed help from a small diameter welding rod to open them up.
stev
08-23-2008, 12:45 PM
If you are planning to back flush a heater core using tap water, make sure you re-flush it using distilled white vinegar. This will removed any tap water deposits and keeps the aluminum core clean inside.
Remember, to refill the cooling system with distilled water and coolant. Never use tap water to refill since will use up the protectant inhibitors quickly.
bert57
08-24-2008, 12:08 AM
If you are planning to back flush a heater core using tap water, make sure you re-flush it using distilled white vinegar. This will removed any tap water deposits and keeps the aluminum core clean inside.
Remember, to refill the cooling system with distilled water and coolant. Never use tap water to refill since will use up the protectant inhibitors quickly.
thanks stev. How is this done? I mean using distilled water. Should I pump it in somehow? How? Or is there some other way? And once in how do I drain the distilled viniger out of the heater core system? Sorry for being clueless on this. But I really have no idea.
