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Old 02-06-2009, 12:09 PM   #5 (permalink)
Master EcoModder
Join Date: Aug 2008
Location: South Dakota
Posts: 460

WonderWagon - '94 Ford Escort LX
Last 3: 51.52 mpg (US)

DaBluOne - '99 Ford Escort SE
90 day: 48.97 mpg (US)

DaRedOne - '99 Ford Escort ZX2 Hot
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Originally Posted by rwyler View Post
How can I test and see if it works in the winter?

I'd like to just remove it personally, but my wife wants to keep it. How much FE savings could I reasonably see from taking it off?
When the car is fully warmed up and the heater is blowing hot air, switch to AC. if it's blowing cold air within a minute or two, it's working.

IMHO. Not enough FE gain to warrant ticking off your wife.

Even on an '86 the AC probably runs when you set the controls to defrost. Defeating it for the winter probably involves nothing more than pulling the power wire to the AC compressor.
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