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01-12-2018, 05:13 PM
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#1 |
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Board Member
Join Date: Oct 2004
Location: With mintyfresh.
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Overhead light makes hot spot on the roof.
I noticed it when it started snowing but there's a hot spot on my roof where the overhead light is. the thing is, i never turn it on, it's not set to go on with the door. there's no reason it should be making a hot spot.
anyone have any ideas?
__________________
Religious people scare me. |
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01-12-2018, 05:27 PM
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#2 |
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Board Member
Join Date: Sep 2012
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It's not making a hot spot. It's because there is a different rate of heat transfer there. Air is an insulator and you have a plastic thing right there. So the air effectively stays warmer for a longer period of time there than the headliner.
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01-12-2018, 09:11 PM
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#3 |
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dirty swede
Join Date: Jul 2016
Location: Massachusetts
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dvom @ the fuse and see if its using any current
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1991 244 +T LH2.4 m46 291k miles with B cam advanced 4*, 962 fuel & 148 ezk, T5 white injectors, 2.5" exhaust w/ magnaflow straight-through & some kaplhenke suspension goodies |
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01-12-2018, 09:24 PM
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#4 |
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Board Member
Join Date: Jul 2009
Location: Ellijay
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Replace the bulb with LED's.
__________________
 1982 Volvo 245 with a Ford 302 V8 Ford V8 Conversion Manual - http://forums.turbobricks.com/showthread.php?t=250257 Bertone Restoration - http://forums.turbobricks.com/showthread.php?t=256460 |
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01-13-2018, 12:56 AM
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#5 | |
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Board Member
Join Date: Oct 2004
Location: With mintyfresh.
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Quote:
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01-13-2018, 12:57 AM
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#6 | |
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Board Member
Join Date: Oct 2004
Location: With mintyfresh.
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Quote:
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01-13-2018, 10:19 AM
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#7 |
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Board Member
Join Date: May 2015
Location: Finland
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It's a feature in every 200.
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444 -55, 145 Express -71, 265 GL -78 D24T, 242 DL -80 (was 4.6l)sold, 245 -88 "B6284T" sold, 245 -90 "B6284T", V90 -98 4.6l |
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01-13-2018, 02:36 PM
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#8 |
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Board Member
Join Date: Mar 2008
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Mine did it this mourning with a light cover of snow on the roof, all you need is a slight temp difference as the light is close to the sheet metal.
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01-13-2018, 08:34 PM
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#9 |
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Newbie
Join Date: Feb 2009
Location: The Pitt, 15147
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So the light never ever ever turns on?
__________________
'99 V70 NAA - So Slow '04 V70 T5A - Feels Fast |
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01-13-2018, 10:03 PM
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#10 | |
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Board Member
Join Date: Sep 2012
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Quote:
You're basically getting something like this occurring. Thin metal has a faster heat transfer than metal with air trapped in it. So you'll get shapes like this on your hood dome light... anywhere there's trapped air.  That said, by all means check it to be sure you won't die in a fire but like... physics anat. |
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