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Date:         Tue, 21 Dec 1999 02:13:28 -0600
Reply-To:     Budd Premack <bpremack@WAVETECH.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Budd Premack <bpremack@WAVETECH.NET>
Subject:      Re: Engine Temperature in Winter
Content-Type: text/plain; charset="iso-8859-1"

There may be air leaks in addition to possible engine temperature issues.

Aging of the flap seals in the main air plenum (which are controlled by 3 of the 4 dash air control levers) creates gaps which allows fresh (cold) air to sneak past. Since it is a huge pain to remove the entire heater/plenum assembly and renew the flap seals, I have found it expedient to go for for an easier solution .

You can cover the main air intake (behind the upper grill) with cardboard and duct tape. This greatly reduces the amount of fresh (cold) air that gets into the heater plenum. In effect, you have just upgraded to a recirculating interior air system.

However, don't cover the small side air intakes as this will completely stop all fresh air from entering the van. This will allow too much moisture (from breathing) to remain in the van, thus allowing condensation to form on the cold windows. Remove your cardboard air intake cover when it warms up in the spring.

Also check for air leaks from loose fresh air ducts under the dash. These are the ducts that supply fresh air to the outer dash vents. Tighten the ducts and secure the connections with duct tape (what else?).

I did both of these easy fixes last winter and my van now stays warm as toast, even when temps are well below 0 F.

Budd Premack 86 Syncro, 73 Super Minneapolis, MN (Land of Sky Blue Waters)


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