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Old 11-28-2011, 07:25 PM   #1
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Cold air coming through firewall.

Has anybody seal firewall with foam to stop draft.

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Old 11-28-2011, 07:39 PM   #2
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I didn't have a hole to fill but I did add some wiring and needed to reseal the dash. Worked fine.

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Old 11-28-2011, 07:42 PM   #3
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I recently had a similar problem and thanks to advice from folks on this forum I was able to track down where the air was leaking in. I did use expanding foam to seal the area and that took care of my problem. No problem using or with the expanding foam either.
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Old 11-29-2011, 02:22 AM   #4
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Be sure it is not the fresh air damper not closing. Mine on occasion when passed by large truck would open allowing in cold air. Since I did not want any fresh air through the dash air conditioning, I completely sealed it off with metal foil tape. Good luck and keep us posted.
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Old 11-29-2011, 11:06 AM   #5
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Finding cold air leaks

I had the same problem with my 35' Georgie Boy Pursuit. It was especially bothersome traveling in the cold weather, with cold air blowing on my feet and legs.

The big trick is to find where to spray the foam as you can't see the leaks. You will need a buddy to help. I tried doing it at night using a bright light under the dash and looking in the engine compartment, and doing it the reverse...shining a bright light from the engine compartment and looking under the dash. Neither worked that well but did show a couple of places.

The best way was to use my air compressor and a long wand tool blower. Just have your buddy move the wand around the fire wall and you listen for leaks under the dash. You can use a length of tube to your ear to pin point the source if needed. You don't need to be really specific, just close enough to know the area. When you determine a location, just foam that area in the engine compartment. There will likely be more than one.

Mine isn't perfect yet, but it is a great improvement.

Do it while you can
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