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


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  #1  
Old 09-23-2010, 04:37 PM
96Ram1500 96Ram1500 is offline
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Default Coolant leaking from AC Compressor...WTF?

OK, first and foremost, please dont argue with me on this... I've been working on engines my entire life and have never seen anything like this...

It started when I was driving home from work. I realized the engine temo was rising. Being right around the block from my house, I pushed to get home and shut off the truck ASAP. I popped open the hood and realized I was low on coolant. I filled it completely up plus some in the reserve. I started the engine, and watched as a full radiators worth of coolant went spraying everywhere. I shut down the engine and looked closer. It IS leaking from the AC compressor. I filled it completely back up, started it back up and let it run. It took about 5 minutes to completely drain the radiator and overheat. I inspected all of the hoses, gaskets, EVERYTHING on that damn engine and am 99% sure that the AC compressor is leaking coolant. How? I have no &&*$# idea. When I shut the engine off I can literally sit there and watch it stream out from the AC compressor shaft.

First of all, the AC compressor is an independent and closed system. No room for coolant. And no, it wasnt the freon oil. It was 2 radiators worth of coolant. I watched it spray everywhere. I'm *#$#$ confused and pissed right now. I've inspected every inch of that engine to make sure the leak wasn't coming from anywhere else. I've cleaned the engine and even went so far as to put baby power on it (if it's leaking you can see exactly where its coming from). I don't even have any oil leaks anywhere. The engine only has 78K miles on it. I'm lost. I don't know what the hell is going on. I haven't taken the compressor off yet, but will this weekend when I have time.

Any advice?
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Old 09-23-2010, 04:40 PM
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Some brands of A/C dye have the same green color as coolant. If the system was ever recharged with the stuff you get in the 1 lb. cans from a parts store or at a shop looking for a leak, it would explain why you appear to have coolant leaking from the compressor.
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Old 09-23-2010, 04:48 PM
96Ram1500 96Ram1500 is offline
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Just tasted it... definately coolant, bud.
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Old 09-23-2010, 04:50 PM
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Pulling it off now... I dont have the patience to wait till the weekend lol. I'm really starting to fear a cracked block.
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Old 09-23-2010, 04:53 PM
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Check your bypass hose. an itty bitty hole could be spraying coolant towards the compressor, which would be difficult to see....where it ricochet's and drips down the backside of the pulley. Or the thermostat housing might have a rust hole doing it too....It has to be coming from SOMEWHERE!!

Does the compressor turn when activated?? if it does, there is NO WAY in hell it'll turn if liquid is actually in there. check that before you 'crack' the lines open and remove.
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Old 09-23-2010, 04:54 PM
96Ram1500 96Ram1500 is offline
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Even if it was the AC dye, that still wouldn't explain where my coolant has dissapeared to.
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Old 09-23-2010, 04:56 PM
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Then best of luck finding out how a cooling system that's pressurized to 16 lbs or so when hot infiltrated an A/C system that at rest has pressure approximately equal to the ambient air temp. If you can run the A/C, this makes even less sense because as we all know, liquids don't compress and it would take out the compressor.
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Old 09-26-2010, 10:28 PM
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got me stomped. and you dont sound like an idiot.
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  #9  
Old 09-26-2010, 11:08 PM
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Bypass hose under the a/c compressor . Pain in the a** to do also .
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