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Old 09-12-2012, 04:33 PM
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snrusnak snrusnak is offline
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Join Date: Jan 2011
Location: Orlando
Age: 27
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Vehicle: 2010 Dodge Ram 1500
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Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
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From what you're saying it's almost certainly not the tstat or water pump. I'd bet it's air in the cooling system. Also, are you using a 50/50 mix of coolant/water? If you have too much coolant it will not dissipate heat well and will cause it to run too hot.

What you are calling the overflow tank is likely actually a expansion tank. Does the hose from the radiator cap to the tank lead all the way to the bottom of the tank(so it is submerged at all times)?
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