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Old 08-11-2022, 09:20 AM   #1
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Winnebago Owners Club
Join Date: Jul 2021
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2012 Winnebago Tour 42QD - Overheating

We have been experiencing overheating issues, particularly on hills. We took the coach to a Freightliner service to diagnose the problem. First they said that the thermostat was stuck, preventing the fan from changing speeds. Then, they decided that the radiator needed a thorough pressure washing. When I picked the coach up, they said that it was still heating up and that when I got someplace where I could be without our summer home for a few days, I should have the radiator yanked and dipped. The suggestion was that while it was out, I should change the fan to Winnebago's latest fix. It seems that I am paying for their guessing. Can anyone clue me in on how I should tackle this ongoing issue?
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Old 08-11-2022, 10:13 AM   #2
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Visually inspect your radiator and stack to see if they did good job of cleaning. Rear Radiators are prone for getting dirty and needing cleaning. Check the gap between the radiator and CAC to see if there is any debris.

If you can check it at night with a good flashlight shining into the area from inside the coach and then looking from the outside, you should be able to see some light through the stack.
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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heat, heating, overheating, winnebago

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