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Cold air flaps and gas mileage 900

posted by  RB on  Thu Feb 3 07:40 CST 2005
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last visit: Mon Jan 26 02:20 CST 2009
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Just thought I'd post some observations relating to cold air flaps. Last summer I locked the cold air flaps on both my 87 745GLE and 96 965 in the cold-air only position. The thermostats on both units had failed and they were in the hot-air only position. The general consensus is this is bad, for obvious reasons.
Last winter the 745GLE, which is my daily commuter car, averaged 25 to 26 mpg on my 60-mile commute. This winter I'm averaging 22 to 23 mpg. Since last winter I've installed new plugs, wires, and of course the normal course of filter changes, etc... In other words, I've kept up on normal maintenance.
Last winter the 965, which is my wife's car and is used mostly in town, short trips (the worst for economy), averaged 14.5 mpg. We saw lows of 13.5. This winter it's averaging 16.5 mpg. Nothing on the vehicle, save oil and filters, has been changed since last winter.
Thoughts?
Richard
--
86 740T/87 745GLE/96 960 Wagon






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New Cold air flaps and gas mileage [900]
posted by  RB  on Thu Feb 3 07:40 CST 2005 >


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