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Heating & Cooling 2nd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #1  
Old 09-25-2011, 02:49 PM
hunter27h hunter27h is offline
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Join Date: Sep 2011
Location: Woodbine, Georgia USA
Age: 69
Posts: 5
Gender: Male
Vehicle: 1997 dodge ram 2500
Color: white (partly)
Engine: 1994-1997 360ci (5.9L) Magnum V8 230hp
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Default no heat '97 2500

I have spent 3 hours today, reading, and going out and checking stuff on the truck, as I read about different items to look at.

Temperature goes to just past 200 on the guage, all of the vents appear to work as they should when switches in proper positions, on both ac and heat, defrost setting brings ac on, as it should.

Checked inlet to heater core, hot, outlet side cool, at operating temperature.

Does this system not have a hot water switch, valve, is it totally dependant on a "blend" door?

Does the coolant constantly flow through the heater core?

Does someone actually recommend CLR for cleaning the heater core?

Recommendations?
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Old 09-27-2011, 03:45 PM
hunter27h hunter27h is offline
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Join Date: Sep 2011
Location: Woodbine, Georgia USA
Age: 69
Posts: 5
Gender: Male
Vehicle: 1997 dodge ram 2500
Color: white (partly)
Engine: 1994-1997 360ci (5.9L) Magnum V8 230hp
Rep Power: 0
Rep:10
hunter27h is on a distinguished road
Default Glad you asked that question!

I can't believe this thread has been on here for three days, without someone with the experience or knowledge to answer the questions, and I have spent the time doing the thread search, if the answers are on this site, I haven't found them. So here are the answers, no there is not a water cutoff to the heater core, other than the thermostat, yes it is a constant flow through the heater core, and yes on the older trucks, you better take the time to do the flush. "back flush" the heater core, and clamp off the heater lines when you are flushing the rest of the system. I spent more time searching on here, far more than it took to do the actual work, and I found more support on other sites.

I have been totally amazed, so I hope someone else finds benefits from this.

Ben
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