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07-12-2017, 08:36 PM
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#1
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Member
Join Date: Jul 2017
Location: Mexia, Al.
Posts: 78
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AC Cooling Fan?
There is a fan under my 99 Allegro Bus diesel, which looks to be cooling fan for the Ac condensor or radiator. It is not running. Ac fairly cool running down the road hot when sitting still. This is the dash ac I am speaking of. I feel I need to chaeck the fuse, but have not been able to locate them so far. Any help be appreciated.
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07-12-2017, 10:36 PM
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#2
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,927
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Most likely the same relay that engages the compressor clutch also energizes the condenser fan. If you can't trace the wire from the relay that powers the clutch, a second relay from the clutch wire could be used to power the fan.
__________________
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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07-13-2017, 04:28 AM
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#3
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Senior Member
Join Date: Mar 2007
Location: Baton Rouge, La
Posts: 838
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Be sure it is working, my relay failed, the ac built up heat, the compressor failed and locked up. The belt broke and I had emergency repairs on the road $2200.00. My relay is in the compartment, drivers side in front of front wheel in a box. The fan should come on when you turn on the dash ac
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07-13-2017, 07:28 AM
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#4
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Senior Member
Join Date: Jun 2016
Location: SW Louisiana
Posts: 8,459
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Also check to make sure the power connectors for the fan have not broken, failure at the connector on either side is fairly common with age. They tend to get some corrosion over time, which increases resistance, which makes them get hot, ...
__________________
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates
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07-13-2017, 07:35 AM
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#5
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Senior Member
Monaco Owners Club
Join Date: Oct 2014
Location: Idaho Falls, Idaho
Posts: 3,698
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Quote:
Originally Posted by Darwin
Be sure it is working, my relay failed, the ac built up heat, the compressor failed and locked up. The belt broke and I had emergency repairs on the road $2200.00. My relay is in the compartment, drivers side in front of front wheel in a box. The fan should come on when you turn on the dash ac
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DITTO. Cooling the refrigerant is critical to the health of the system. I'd not use it in its current state. Is power getting to the fan? These fans do fail. Then trace backwards. If the compressor is running, the condenser fan should be running too.
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Cheers,
TonyMac
2006 Monaco Safari Cheetah 40PMT
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07-13-2017, 07:39 AM
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#6
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Senior Member
Join Date: Nov 2005
Posts: 7,301
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Yup--wire connections, relays, fuses--all could be a problem. Or even the trinary switch on the system itself could be a problem. Lots of things to check--go for the obvious first, but best answer might be to re-wire a new fan relay to the compressor clutch circuit--that way fan runs anytime clutch is on......
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Old Scout
2015 IH45 Foretravel
2003 Alpine 40' MDTS [Sold]
New Braunfels, Texas
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07-13-2017, 07:49 AM
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#7
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Senior Member
Monaco Owners Club
Join Date: Jan 2008
Location: Olympia, Wa
Posts: 2,772
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Quick check are you talking front or rear. If front Gen radiator.
LEN
__________________
2004 Clss C 31' Winnebgo
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07-13-2017, 10:07 AM
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#8
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 53,642
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Hi !  Welcome to IRV2! We're sure glad you joined the gang! 
I would call Tiffin with that question! Keep her between the ditches!
Good luck, happy trails, and God bless!  
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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07-13-2017, 10:28 AM
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#9
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Senior Member
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 19,927
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Quote:
Originally Posted by OLYLEN
Quick check are you talking front or rear. If front Gen radiator.
LEN
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I don't think Tiffin made a front engine diesel Allegro Bus in 1999.
__________________
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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