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Chevrolet Express
Platform: GMT Van

Overheating issues

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Old Aug 9, 2021 | 11:33 AM
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Syncman's Avatar
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Default Overheating issues

2004 2500 V8 express. 390,000m New/used engine.

70 miles to job, No issues. Coming home and Starts overheating in traffic. Usually sits just below 210. Once it starts going up, I can hear the viscous fan kick in. But after a while it seems to give up. Not running at 240. 3 new thermostats, 2 pumps, radiator. Could it be the Chinese viscous fan from the parts store Maybe needs genuine chev part? Or something else?
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