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Old 07-08-2012, 06:22 PM   #1
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1983 31' Airstream310
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1983 310 MH running hot

Replaced the thermostat w/180 degree, flushed radiator; still hits 220 degrees. Any ideas?
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Old 07-08-2012, 06:32 PM   #2
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Replace the sender and the gauge. Those were crummy gauges to begin with. If you're going to keep the coach, start thinking about ALL the gauges.
When the radiator was done, was the water pump done, as well, or ever lubed?
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Old 07-08-2012, 07:00 PM   #3
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I don't have a motorhome, but our old Chevy crewcab pickup had a 454. If your engine cooling fan has a clutch on the hub, it could be worn out and slipping. This causes the fan to free-wheel and turn slower than it should, and it won't move enough air to cool the engine.

If you are familiar with under-the-hood sounds, is the fan quieter than usual? In the summer heat, at a fast idle, it should sound like a propeller plane taking off. If the fan is only moving about the same amount of air as at idle, it is a good possibility the fan clutch is bad.
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Old 07-09-2012, 12:10 AM   #4
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Already replaced the guage with a new mechanical new one; replaced the fan clutch! Thanks, Jerry
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Old 07-09-2012, 02:50 AM   #5
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PS: This is the 1982 P30 Chevy chasis with the 454 cu in engine.
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Old 07-09-2012, 02:53 AM   #6
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Haven't replaced the water pump or radiator yet. This thing used to run cool, then was hitting 230 degrees before flushing the radiator.
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