scoobydoo wagon Posted October 25, 2016 Share Posted October 25, 2016 Hey everyone Ive got a 2002 Legacy wagon 2.5l auto. It has AC which I never use up here in Canada. I was wondering if it would improve the mpg and zippiness if I disconnected the drive belt for the compressor. Im tempted to remove the entire unit for the weight but Im not sure I want to put in the effort of redoing the heater unit and rad etc. Also I might sell the car in the spring and having AC would help (altho I never understand that here in sunny ole Canada lol). The belt isnt in perfect shape so Im tempted to just slice it off with a box cutter but is there something Im not considering here? Thoughts? Link to comment Share on other sites More sharing options...
lmdew Posted October 25, 2016 Share Posted October 25, 2016 Nope, if you don't want it snip the belt. It's AC only. It is recommended to run the AC every month or so to keep the o-rings lubricated and system working. If you have not done that for years, it won't make any difference now. Not much of any MPG change as it's just rotating a belt when the AC is off. No load on the engine. 1 Link to comment Share on other sites More sharing options...
wtdash Posted October 25, 2016 Share Posted October 25, 2016 Doesn't the DEFROST use the AC to do something? I know it runs when my Defrost button is on. 1 Link to comment Share on other sites More sharing options...
john in KY Posted October 25, 2016 Share Posted October 25, 2016 Doesn't the DEFROST use the AC to do something? I know it runs when my Defrost button is on. yes. Link to comment Share on other sites More sharing options...
DaveT Posted October 26, 2016 Share Posted October 26, 2016 Yes the ac is run for defrost. Dries the air, makes it quicker. Also helps keep the ac alive until summer. But you can live without it. I'd be shocked if you could notice a difference with a 2.5 engine. Maybe you can feel it when the ac is actually running, but when it's off, it's just the losses of the belt bending and the bearing. Link to comment Share on other sites More sharing options...
scoobydoo wagon Posted October 26, 2016 Author Share Posted October 26, 2016 thanks guys!! After thinking about it and testing the AC i think I will junk the whole thing. Weight loss will help a tiny bit on mpg and it will give me a bit more room in the engine bay to change plugs and stuff. Link to comment Share on other sites More sharing options...
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