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Old 01-18-2005, 10:10 PM
Registered User
Join Date: Mar 2004
Location: Philly
Posts: 127
No heat on floor

My 86 sdl has stopped blowing heat on the floor. I've gone through my repair manual on cd and searched the forum. It seems that I need to pull the side panel on the console to check vacuum and also look behind the radio to verify that the flap is moving. I'll check all that tomorrow. I'm wondering however what part normally fails. Any concensus on what typically fails - vacuum line, connector, etc? I'm also wondering if I'm not able to get it properly repaired, is there some way to hold the flap partially open? I've got a round trip from Philly to Pittburgh coming up and a little heat on the floor would be nice!

1986 300SDL
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Old 01-18-2005, 10:18 PM
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Join Date: Sep 2004
Location: Bothell, WA
Posts: 237
I posted my "fix" for this, take a search.

Basically I glued a plastic soda bottle cap to jam the flap open

'85 300SD
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Old 01-18-2005, 10:46 PM
Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
Kevin posted in this thread. There are others, and I'm going to guess that there is some inherent weakness in the SDLs that makes them more susceptible to losing floor heat.

Right floor heat OK, left floor none

Hope this helps.

Best Regards,
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Old 01-18-2005, 10:56 PM
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Join Date: Sep 2004
Location: Bothell, WA
Posts: 237
Here was my original post in tech help since it applies to all 126 cars I posted it there.

'85 300SD
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