3rd Generation Maxima (1989-1994) Learn more about the 3rd Generation Maxima here.

AC Horsepower Loss.....

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Old Aug 1, 2002 | 03:02 PM
  #1  
seawolf14's Avatar
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AC Horsepower Loss.....

Just wondering how much power the AC will drain when running it at full blast?
Old Aug 1, 2002 | 03:43 PM
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I don't know if there is any real number for this question, but from my driving experience, it's a generous amount. Try putting it in second and driving it up to about 30 with the A/C on, then keeping the same pressure on the gas, turn the a/c off. For me, I can actually feel a difference; maybe I'm just crazy though.
Old Aug 1, 2002 | 04:13 PM
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My VE 5spd has a switch which turns off the A/C compressor under full throttle
Old Aug 1, 2002 | 04:53 PM
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switch off

My 91 SE VG Auto also shuts off the a/c when I stomp on it. Worked great today...

-Seth
Old Aug 1, 2002 | 05:22 PM
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Re: switch off

Yeah the a/c kills a lot of power. I try not to use it when on the highway so I get all the power I can get to go fast when I need to. Other than that my A/C is real cold and I love it.
Old Aug 1, 2002 | 07:01 PM
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A UDP will help.
Old Aug 1, 2002 | 07:15 PM
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I notice a big power loss, it just doesn't feel the same with it on. When your in park or neutral and rev the engine it definitely is less free revving and the engine slows down a lot faster. I'd say it feels like it loses 5-15 HP, but probably more torque than anything.
Old Aug 1, 2002 | 07:53 PM
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Unless it's god-awful hot out there, I prefer the "4-80" AC. I had never heard any figures so I figured I'd ask.
Old Aug 1, 2002 | 08:24 PM
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Originally posted by seawolf14
Unless it's god-awful hot out there, I prefer the "4-80" AC. I had never heard any figures so I figured I'd ask.
I can tell that you dont live in the south
Old Aug 1, 2002 | 11:01 PM
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rustangkilla
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"4-80" = Much noise, which = not being able to hear stereo or passengers
Old Aug 2, 2002 | 05:25 AM
  #11  
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Get a louder stereo.
Old Aug 2, 2002 | 06:26 AM
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I hear my stock Bose just fine with the windows down, sunroof popped up and going 90mph!
Old Aug 2, 2002 | 08:02 AM
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WHAAAT???!?!?!!?!?!!
Old Aug 2, 2002 | 04:05 PM
  #14  
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my friends hate me cuz i refuse to turn the ac on unless its a chick hehee...

cuz seriously i love my car's power too much to give a damn about my personal comfort hehehe... u try driving down the 5 in california minus the ac on a hot summer day...all i do is buy ice waters and maintain a steady flow of liquids. i guess my sauna experiences make these driving moments easier

hehehe

but once a girl is on the car....windows shut moonroof closed its all about the a/c then.
Old Aug 2, 2002 | 06:40 PM
  #15  
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If you need the power, just floor it! There's an automatic switch that shuts the AC off while it's floored, and you have all your power back. It only robs power at part throttle.
Old Aug 2, 2002 | 06:57 PM
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you know, i heard that you lose as much gas mileage with the windows down as you do with the ac because of a lot of drag.
Old Aug 2, 2002 | 09:46 PM
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My MPG are bad enough without AC. 4 window, 5 MPH works fine on the trip home.

Old Aug 3, 2002 | 06:26 AM
  #18  
«§»Craig B«§»'s Avatar
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Originally posted by mtcookson
you know, i heard that you lose as much gas mileage with the windows down as you do with the ac because of a lot of drag.
it says in the glove box manual that AT HIGHWAY SPEEDS, using AC is more efficient than having the windows down
doesnt say what speed is highway speed, what level of AC, how many windows, etc
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