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Question When Using A/C

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Old Jul 23, 2010 | 12:38 AM
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Default Question When Using A/C

I've noticed that when the A/C is running there seems to be an unusually heavy drag on the engine. It is definitely from the A/C, because when I turn the A/c off the drag completely goes away. It seems to be much more prevalent on this car than anything that I've recently owned. Just curious if anyone else has noticed this?
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Old Jul 23, 2010 | 12:42 AM
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Mine doesn't.
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Old Jul 23, 2010 | 12:49 AM
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Originally Posted by jrose7004
Mine doesn't.
Manual or auto trans? Mines a manual.
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Old Jul 23, 2010 | 12:50 AM
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I did some pretty serious power brake burnouts and donuts today with the AC on, yes i have always noticed a slight drop in response when the AC is on but not enough on a 400 horse Vette to make me not want to have it on.
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Old Jul 23, 2010 | 12:55 AM
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Originally Posted by Blew by you
I did some pretty serious power brake burnouts and donuts today with the AC on, yes i have always noticed a slight drop in response when the AC is on but not enough on a 400 horse Vette to make me not want to have it on.
I feel the same way. Did the big family loop this week. Started here in eastern NC on Monday, went to Blacksburg Va via I-40 & I-81, then up I 81 to Northern Va, then back home today via I-95. I'm usually a diehard top down guy, but had the top up with A/C on today. Digital thermometer in the car was at or over 100* for a good part of the trip. I actually saw 105* driving through Richmond.

Last edited by Marine One; Jul 23, 2010 at 01:01 AM.
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Old Jul 23, 2010 | 01:03 AM
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It is detectable,,but nothing serious in mine!! You want to see/experience A/C drag,,drive my wife's 4 banger Saturn Vue(the little SUV) with A4 trans!! THAT'S A/C drag!!! My FRC has next to none!!The last several weeks here in the St.Louis area,,,we have NEEDED A/C Temps running 90 to 100 with humidity so thick you can cut it with a knife!!! Heat indexes have been running around 110,,do anything outside,,and you are drenched!! Thank GOD for A/C!! I like windows down,,no A/c,,,but there ARE limits!!
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Old Jul 23, 2010 | 01:07 AM
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The last performance car I owned that the A/C made this much of a difference on was a 78 Trans-Am with a 400 & manual trans.
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Old Jul 23, 2010 | 04:10 AM
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I can notice the difference in the car's performance when the A/C is on compared to it being off, but probably no more than on any other car I've had. With the heat we have been having, it's a sacrafice that I'll take to have the A/C.
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Old Jul 23, 2010 | 09:36 AM
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Yesterday going down the shore outside temp in Toms River read 105. I never feel a drag on the AC with this vette which is 6 speed and pretty much stock. I feel the difference in my 2000 Blazer much more.
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Old Jul 23, 2010 | 09:43 AM
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A little bit but not much...I appreciate the cool air so much that I probably don't notice it
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Old Jul 23, 2010 | 09:45 AM
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Appreciate the responses. I wanted to make sure it wasn't just me. And yes, I know that I' being picky!
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Old Jul 23, 2010 | 09:47 AM
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Not to worry, it kicks off if you go WOT.
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Old Jul 23, 2010 | 09:47 AM
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Originally Posted by Munch
Not to worry, it kicks off if you go WOT.
Good point!
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Old Jul 23, 2010 | 11:55 AM
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Originally Posted by Vetteman Jack
I can notice the difference in the car's performance when the A/C is on compared to it being off, but probably no more than on any other car I've had. With the heat we have been having, it's a sacrafice that I'll take to have the A/C.
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Old Jul 23, 2010 | 12:35 PM
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Originally Posted by Munch
Not to worry, it kicks off if you go WOT.
Wow that makes sense to me now, i was at the track burning off my GY runflats, and i noticed it getting warmer in the car, man my 17 yr old was grinning from ear to ear, he loved doing the donuts.
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Old Jul 23, 2010 | 01:13 PM
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I rarely use it since we ain't havin' a summer this year.




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