 fan assembly lower flaps, each side |
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| jacksun |
 Aug 31 2014, 06:46 AM
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#1
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Member  Group: Members Posts: 236 Joined: 8-August 13 From: mi Member No.: 16,224 Region Association: Upper MidWest  |
hi,
how important is it to keep the little flaps on each side of the fan assembly housing? the flaps on the lower sides. tks randal |
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| dlee6204 |
Aug 31 2014, 07:38 AM
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#2
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Howdy Group: Members Posts: 2,162 Joined: 30-April 06 From: Burnsville, NC Member No.: 5,956 |
Very important if you want some heat at idle. When your heater fan is blowing the flaps keep the air from being blown back to the engine. This is usually only at idle because the engine fan isn't blowing very much. Anything over idle and your engine fan is blowing more air and opening the flaps.
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| jacksun |
Aug 31 2014, 11:49 AM
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#3
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Member Group: Members Posts: 236 Joined: 8-August 13 From: mi Member No.: 16,224 Region Association: Upper MidWest |
would it be a good idea that the air from the heat exchangers is cycling back through
at idle to assist the warm up of the engine, by removing the flaps? tks for your reply randal |
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| barefoot |
Sep 2 2014, 09:16 AM
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#4
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Senior Member Group: Members Posts: 1,326 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States 
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QUOTE(jacksun @ Aug 31 2014, 01:49 PM)  would it be a good idea that the air from the heat exchangers is cycling back through at idle to assist the warm up of the engine, by removing the flaps? tks for your reply randal If the little flaps are removed, air from the heater fan will only blow back into the engine front fan and not back around the cylinders, so no benifit. |
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