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Old 08-23-2010, 10:57 PM
funflag funflag is offline
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Join Date: Aug 2010
Age: 46
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Engine: 1993-1993 360ci (5.9L) Magnum V8 230hp 325lb/ft
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Default overheating/bubbling 5.9

I have a '93 dakota 5.9l 4x4 (I know it's not a ram, but I'm looking for some help, and the dakota site has offered nothing). I recently replaced the radiator, hoses, filler cap on the top hose, thermostat and cap. I am filled with 50/50 fresh coolant. I have pressure tested and no pressure loss. (I pumped up to 20lbs and it held for ten min.) I also tested the new cap, and that tested fine. If I get the engine hot, not from normal driving, reving the engine at idle, or driving in low gear, it bubbles over profusely into the overflow bottle after stopping. I had originally noticed this after towing a small pop up trailer. the needle doesn't have to get out of the normal range, just to the upper end. The aux fan works, fan clutch has no play no wobble/leak/noise from water pump. No white smoke, no oily radiator fluid. Heater works fine and top and bottom hoses both hot. Any help would be apprecitated. i am at a loss here...
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