2nd Gen 5.9L Overheating Issues 210^Fh - DODGE RAM FORUM - Ram Forums & Owners Club! - Ram Truck Forum
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Heating & Cooling 2nd Gen Dodge Ram Heating & Cooling Problems and Questions.


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  #1  
Old 11-30-2012, 12:15 PM
dodgedipduckdive dodgedipduckdive is offline
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Exclamation 2nd Gen 5.9L Overheating Issues 210^Fh

Hi guys, 94 5.9L magnum has been overheating for some time now. I had initially thought that it was a clog in the radiator, but I've flushed it several times and have just taken it out and ran the garden hose through it, It didnt seem overly restricted. I've also put a "fail safe" thermostat in that stays open when bad. I removed the water pump to check it out the impeller seems to rotate easily and feels very smooth. Between the waterpump and and the timing cover, it looked as if there was only Red RTV used instead of a gasket. Also the impeller housing on the timing cover, there was some pretty noticable pitting going on in one confined area. I dont think the fan clutch is a factor right now because it runs a constant 210 at highway speed or 25mph, only when idling does it overheat. The radiator is bulged at the top and I can afford to replace only so many things at this point any suggestions or ideas would be greatly appreciated.
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Old 11-30-2012, 01:06 PM
dodgedipduckdive dodgedipduckdive is offline
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I'm going to be pulling the freeze plugs today so I Can flush the block I will let you guys know how it goes.
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Old 11-30-2012, 01:07 PM
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Sure sounds like a clogged radiator to me. Repeated flushings won't fix it if it's bad enough and it only takes a few rows being stopped up to cause a problem while still appearing to flow freely.
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Old 01-23-2013, 02:26 AM
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Dirt can get caked up in the radiator, a simple flush isn't so simple. It won't clean it, sounds like you need a new radiator.
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