Engine performance and tuning when the AC is on

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Jul 23, 2010 | 08:38 AM

#21

Jazz-LT1

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From: Hampton Roads, VA

Here's another possible explanation. When its hot enough to need the A/C, in addition to the A/C robbing power, its also hot outside, which robs significantly more power than the A/C probably does. With the current temperature today in Virginia set a 100 deg. F. I'm pretty sure my car wouldn't be putting down the type of power it does when its 70 or 50 degrees outside. Just something else to consider.

Jul 23, 2010 | 08:53 AM

#22

thatguy383

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From: Fargo, ND

Quote:

Originally Posted by fleetmgr

The compressor requires approx. 25 HP from the engine to turn, so you're gonna feel it no matter what.

25HP? maybe, - I would say 15 max or less, take the belt off. that compressor is not very hard to turn.

also this thread - http://www.bobistheoilguy.com/forums...1552670&page=1

Last edited by thatguy383; Jul 23, 2010 at 09:13 AM.

Jul 24, 2010 | 02:16 AM

#23

camaroz28383

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Quote:

Originally Posted by thatguy383

25HP? maybe, - I would say 15 max or less, take the belt off. that compressor is not very hard to turn.

when you do that the clutch is not engaged. engage it and get the compressor pressurizing the system and it takes a good bit of effort to turn

Jul 24, 2010 | 11:11 AM

#24

speed_demon24

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From: Ocala, FL

Quote:

Originally Posted by thatguy383

25HP? maybe, - I would say 15 max or less, take the belt off. that compressor is not very hard to turn.

also this thread - http://www.bobistheoilguy.com/forums...1552670&page=1

It takes nowhere near 25hp to turn at low rpm's.

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