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Old 04-27-2019, 08:59 PM
rapidoxidationman rapidoxidationman is offline
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Join Date: Dec 2002
Location: Teton Valley, Idaho
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Pull the thermostats and drop 'em in a pot of water, then bring that water to a boil. Did the thermostats open?

Another check, especially with that many miles, would be to make sure the cooling stack is clean. There's been cases on this forum where birds have set up shop between the turbo intercooler and the radiator, effectively blocking air flow through the radiator.
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There's no point being a pessimist - it wouldn't work anyway.
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