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Old 08-01-2011, 09:55 AM   #1
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does your a/c make your car act stupid?

I never really liked using the a/c. and when i do it's usually when its extremely hawt. Ford recommends using max a/c, supposedly it's more fuel efficient (from what i read in the manual). However, when it goes on. the engine feels like it wants to kill itself. and shifting is a pain the butt. can't even release the clutch without that feeling of popping in to the gear. whats worse is the ac doesnt get farther than 4 inches out of the vent. this can't be a problem i know. the car is brand new, but does anyone elses car act stupid when the a/c is on?


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Old 08-01-2011, 10:03 AM   #2
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The A/C kills a little four popper, it is nothing like that big 5.0 you're used to.

The only real way around it is a pulley under drive kit, and then it means your A/C won't blow cold at idle.
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Old 08-01-2011, 12:45 PM   #3
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Yea, the AC is a BIG draw on these cars. I remedied that by doing a couple of performance mods to my 08. But as for the AC not going far, thats weird because my 08 gets so cold I have to turn it down or off sometimes.
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Old 08-01-2011, 06:59 PM   #4
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Mine does the same (2011). When the A/C is on, I pretty much HAVE to keep the RPMs at 2k while shifting or more or else it lurches. Kind of annoying, but now that I know that around 2k is the magic number, it's easier to deal with.
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Old 08-01-2011, 07:10 PM   #5
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I have had 0 problems with my AC in my 08. The AC system is a little weak but I solved that problem by installing ceramic window tint 20% rear and 35% front. Now the car stays much cooler even when its over 100 outside. I have noticed no performance problems with the car with the AC engaged.
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Old 08-01-2011, 07:37 PM   #6
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I haven't noticed much difference other than a loss of about 2 mpg and my air is cold enough so that after a while I have to cut it back too. And my other ride is an F-150 with a 4.6 and 3.55 rear gears. AC or not, I about bark the tires the first time I pull off a light with the F-150 after driving the Focus all week. The Focus is pretty quick, the F-150 is real quick until the wind drag takes over. And MAX AC is more efficient, it recircs the already cool air, the other settings draw in outside air and cool it (less). The fastest way to cold is to start with the other AC, in my truck through the dash with just the rear sliding window open, in my Focus on the floor with the windows just cracked. Drive like that for 3-5 minutes until most of the real hot air is expelled (note my F-150 is dark red and the Focus is black), then switch to MAX and close all the windows.
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Old 08-01-2011, 10:03 PM   #7
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In my ’09, I hear the A/C a little bit at idle and not at all when the revs come up. I can just feel it cycling as I drive; no big slow-down as with A/C in my Escort wagon. 1-2 mpg hit with extended A/C use. Temp-wise, it cools the interior just fine without overdoing it.

All things considered, it does what I want with minimal downside.
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Old 08-01-2011, 10:06 PM   #8
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i noticed my A/C felt funny with the air filter box resonator delete mod. when it put the resonator back on, it was fine again
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Old 08-02-2011, 11:02 AM   #9
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My A/C makes my car go really sloooooooooow! Especially starting out on a hill. My Zetec is crazy slow with A/C on the Duratec not as bad but, still bad enough. Just one of the pitfalls of driving a 2.0 litre car.
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Old 08-02-2011, 12:18 PM   #10
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Dont have any problems with my AC on very little power loss. Mybe its all the mods and it gets real cold have to turn it down or off.
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