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Heating & Cooling 4th Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #321  
Old 12-31-2013, 12:50 PM
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Quote:
Originally Posted by garyad View Post
Can somebody fill me in? Since the cooling system is a closed system how does the smell get into the cab? Wouldnt any coolant smell be contained within the system? It has been my experiance that only when there is some type of leak will you get any type of coolant smell. What am I missing? Thanks
That is exactly how I see it too. The steam on the windows is an indication of breach in the sealed system. Inspection of the hoses in motor area indicates they are dry. So in my opinion there is a small leak in the core or core valve allowing the coolant fumes to enter the cab at idle or low speeds. The core or core valves needs replaced or low coolant will lead to over heat issues sooner or later.
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  #322  
Old 12-31-2013, 01:51 PM
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To get steam outside of the system there has to be coolant outside of the system, if there is coolant outside of the system then there will be a coolant loss....can anyone confirm a loss of coolant? Even at a miniscule leak, if your driving your truck daily this tiny leak would eventually show in coolant loss....
If the problem were created by a leak in the system why are those with new hoses and coolant not getting the smell? Would it not start immediately through this leak regardless of hose or coolant change?
Im staying with the chemical reaction between the hoses and HOAT coolant and the smell making its wat through the HVAC system..
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  #323  
Old 12-31-2013, 03:24 PM
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Fact: The OAT coolant stinks from whatever cause.
Fact: The coolant system is not a closed system - it is only closed up to about 16 lbs
pressure, then excess coolant/fumes from expansion/pressure over 16 or lbs then
goes into the plastic overflow container.
i
Fact: Any fumes or in some cases overflow coolant exits through a small plastic tube
(part of the container,top right side) The tube makes a 90 degree turn down
beside the unit. The stinking fumes and /or overflow coolant have no where to
go except inside the engine compartment and at times into the airflow and A/C. There is no hose attached to the plastic tube and the tube is only about 4 inches long.

My Fix: I placed a .03 rubber balloon over the plastic tube which stops all fumes and if
bad overflow condition ever came to pass the coolant/pressure would simply
push the balloon off. The balloon is not visible. Does not stink anymore.
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  #324  
Old 12-31-2013, 07:08 PM
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This is interesting information and Im reading as if you believe that the terrible smell is the coolant only and has nothing to do with some reaction with the hoses.... but still doesnt explain why the guys that got the new hoses and coolant no longer get an bad odor. Its not like they dont get the smelly coolant odor seeping out at 16psi of pressure....
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  #325  
Old 12-31-2013, 07:16 PM
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If your explanation were 100% true (trust me Im interested in this) then the best route would be to extend the tube, run it under the truck and add an exhaust EVAC for the coolant fumes. The exhaust would help for a small pull on the tank pulling the odor/fumes from the tube and everything would be dumped out the tailpipes and exited to the rear of the truck.....
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  #326  
Old 12-31-2013, 08:24 PM
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Quote:
Originally Posted by mygt8a4re View Post
This is interesting information and Im reading as if you believe that the terrible smell is the coolant only and has nothing to do with some reaction with the hoses.... but still doesnt explain why the guys that got the new hoses and coolant no longer get an bad odor. Its not like they dont get the smelly coolant odor seeping out at 16psi of pressure....
If his explanation is accurate and its not a closed system then it has to be the fumes. If in fact Chrysler left debris in the casts reacting with the coolant of course the casting debris would be flushed out before the new hoses thus new hoses would no longer absorb the casting debris odor. Its worth a try until flush takes place for the low cost of a balloon.
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  #327  
Old 12-31-2013, 08:26 PM
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Quote:
Originally Posted by pvm171 View Post
Fact: The OAT coolant stinks from whatever cause.
Fact: The coolant system is not a closed system - it is only closed up to about 16 lbs
pressure, then excess coolant/fumes from expansion/pressure over 16 or lbs then
goes into the plastic overflow container.
i
Fact: Any fumes or in some cases overflow coolant exits through a small plastic tube
(part of the container,top right side) The tube makes a 90 degree turn down
beside the unit. The stinking fumes and /or overflow coolant have no where to
go except inside the engine compartment and at times into the airflow and A/C. There is no hose attached to the plastic tube and the tube is only about 4 inches long.

My Fix: I placed a .03 rubber balloon over the plastic tube which stops all fumes and if
bad overflow condition ever came to pass the coolant/pressure would simply
push the balloon off. The balloon is not visible. Does not stink anymore.
Thanks for the info. might as well try it and see what takes place. Wonder why the windows are steaming so easy? but could be due to running system in recirculate too?
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  #328  
Old 12-31-2013, 08:45 PM
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very good points and deffinately worth a shot. Trust me, Im in no way arguing, I like bringing up as much info as possible and waiting to hear others comment on it. Its nice to see and hear all the possiblities and chip away at them over time...

I certainly dont want to get crazy on the casting debris issue but I can tell you if there is casting debris left behind, it will not be fully removed with a couple flushes. The debris isnt some residual stuff floating within the sytem, casting debris is adhered to the casted areas that over time, expansion, heat, etc, flakes off or falls off and flows throu the cooling system wich results in time mostly to remove. Adequate periodic flushes or a filtration system can help contain the problems that can arrise from this. Im not an expert but have dealt with casting debris situation with Ford and International engines (why Internation uses external coolant filtrtation systems).

So at this point is it safe to say the "reaction" of the coolant and the compound of the hoses is not the cause of the smell? Just trying to eliminate what information is no longer useful!
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  #329  
Old 01-01-2014, 03:02 AM
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I bought mine yesterday--first new car purchase. Dealer said it would go away after a couple of days (said it was due to the coating they put on the hood to protect it in transit).
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  #330  
Old 01-01-2014, 07:44 AM
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HUH!!!!!!!
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