LS3 + AC = Loss in power What's wrong? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

RavenSS · 07-21-2011, 01:44 PM

Alright, it just hit 95 degrees today so I decided to stop driving with the windows down and blast the AC. I went to leave my driveway and the car had NO power. I was in 1st gear and gave it gas and it stuttered along like it was in 3rd gear at low rpms. I thought I was in 3rd gear and mis-shifted until it kept doing it. Later on in the day I tried again during lunch and it did it again. Once I was moving along it didn't seem to be an issue. I was able to WOT it after I was moving along. Turn AC off and it didn't hesitate. Any ideas?

The Stig · 07-21-2011, 01:51 PM

A/C drains HP. Fact.

CyberDan · 07-21-2011, 01:59 PM

My l99 acts strange under the stress of the ac when its 105 out, but that's expected.

Moorepheus · 07-21-2011, 02:37 PM

yep, A/C = LESS HP at tires. But since I just replaced my rear tires already, I don't drive hard anymore. not for 300 per tire.

JSC81 · 07-21-2011, 02:42 PM

LOL

Devryn17 · 07-21-2011, 02:50 PM

O.K. THAT much drag is unusual. If it is continuously doing that, take it to a dealer. I don't lose anywhere near that much with the a/c on and I've been running mine for 3 months now.

MEDISIN · 07-21-2011, 02:51 PM

I definitely notice when it's on but to be honest, it draws less power than other cars and trucks I've driven. It could be the hot humid air getting pulled into the engine combined with the AC that's exasperating the effect. I tend to take it pretty easy on both my cars when it's this hot and humid out.

RavenSS · 07-21-2011, 04:35 PM

Quote:

Originally Posted by Devryn17

O.K. THAT much drag is unusual. If it is continuously doing that, take it to a dealer. I don't lose anywhere near that much with the a/c on and I've been running mine for 3 months now.

That is exactly my opinion. I understand the loss in power with AC on, but this just felt extreme. 1st gear feels like I'm trying to start from a dead stop in 3rd. I have to basically floor it because it feels like it's going to stall if I don't. Then it levels out after about 5 seconds to where it rides normal.

BigDan · 07-24-2011, 11:37 PM

I thought on all new cars or at lest the few I've heard of automatically turns off the AC compressor during WOT situations. There is something definitely wrong and need a visit to the dealer.

LimaCharlie · 07-25-2011, 12:48 AM

Quote:

Originally Posted by BigDan

I thought on all new cars or at lest the few I've heard of automatically turns off the AC compressor during WOT situations. There is something definitely wrong and need a visit to the dealer.

This is true. I'm certain the Camaro shuts off the A/C at WOT too but I never tried it. I'll never go WOT in my Camaro or Silverado with the A/C on anyways.
As for your description RavenSS, it does sound a bit extreme. I feel the power difference with my A/C on but the driveability is still the same. The shifts feel the same and I have no hesitation at any RPM. Take it to the dealer if you feel there is a problem.

Chevrolet Customer Svc · 07-25-2011, 09:39 AM

RavenSS, have you had the time to take your vehicle in to be checked over just to be sure there isn't anything actually wrong with the vehicle? If you need any help working with the dealer let me know!

Jeff Morris, Chevrolet Customer Service

RavenSS · 07-27-2011, 08:22 AM

Quote:

Originally Posted by Chevrolet Customer Svc

RavenSS, have you had the time to take your vehicle in to be checked over just to be sure there isn't anything actually wrong with the vehicle? If you need any help working with the dealer let me know!

Jeff Morris, Chevrolet Customer Service

Jeff, I had not had any time to take my car in yet. Busy Busy Busy! As soon as I can I'm going to talk with the dealer. Thanks for your support!

Chevrolet Customer Svc · 07-28-2011, 01:42 PM

Thanks for your reply. Hopefully your work can slow down enough for you to at least drop the vehicle off. I hope it's a quick fix for you and you can get back to enjoying your vehicle as soon as possible!

Jeff Morris, Chevrolet Customer Service

07-21-2011, 01:44 PM	#1
RavenSS Monarch is here Drives: 2011 Summit IOM 2SS RS M6 Join Date: Jun 2011 Location: Morris County NJ Posts: 107 View My Garage	LS3 + AC = Loss in power What's wrong? Alright, it just hit 95 degrees today so I decided to stop driving with the windows down and blast the AC. I went to leave my driveway and the car had NO power. I was in 1st gear and gave it gas and it stuttered along like it was in 3rd gear at low rpms. I thought I was in 3rd gear and mis-shifted until it kept doing it. Later on in the day I tried again during lunch and it did it again. Once I was moving along it didn't seem to be an issue. I was able to WOT it after I was moving along. Turn AC off and it didn't hesitate. Any ideas?

07-21-2011, 01:51 PM	#2
The Stig knows 2 facts about ducks Drives: ...and they're both wrong Join Date: Aug 2009 Location: The HMS Invincible Posts: 25,072 View My Garage	A/C drains HP. Fact. __________________

07-21-2011, 01:59 PM	#3
CyberDan Drives: 1SS Camaro Join Date: Sep 2010 Location: Texas Posts: 661	My l99 acts strange under the stress of the ac when its 105 out, but that's expected. __________________ CAI Cold Air Intake, VMax CNC TB, Borla Sport Catback Exhaust, EE Oil Catch Can, Eibach Sway Bars and Drop Springs, AAC concept side markers, stealth signal bulbs, Heritage grille, Sparks Restorations front and rear modern SS emblems

07-21-2011, 02:42 PM	#5
JSC81 Drives: 2010 1SS/RS M6 Join Date: Apr 2010 Location: Charleston, WV Posts: 400 View My Garage	LOL __________________

07-21-2011, 02:50 PM	#6
Devryn17 Suffers Fools Poorly Drives: 2010 SS/RS, CGM w/ Silver Stripes. Join Date: May 2011 Location: Coolidge, AZ Posts: 1,117	O.K. THAT much drag is unusual. If it is continuously doing that, take it to a dealer. I don't lose anywhere near that much with the a/c on and I've been running mine for 3 months now. __________________ 2010 2SS/RS, CGM w/ silver stripes. Hurst Shifter, long tube headers, full exhaust, CAI, tune. SAE 407 RWHP/402 RWTQ Momma didn't bronze my shoes, but when I turned 16 I inherited a lead foot.

07-21-2011, 02:37 PM	#4
Moorepheus Drives: 2013 Dodge Charge R/T Plus AWD Join Date: Jul 2009 Location: Niagara Falls, NY Posts: 1,307 View My Garage	yep, A/C = LESS HP at tires. But since I just replaced my rear tires already, I don't drive hard anymore. not for 300 per tire.

07-21-2011, 02:51 PM	#7
MEDISIN Drives: 2011 CTS-V Sedan Join Date: May 2009 Location: Chapel Hill, NC Posts: 1,505 View My Garage	I definitely notice when it's on but to be honest, it draws less power than other cars and trucks I've driven. It could be the hot humid air getting pulled into the engine combined with the AC that's exasperating the effect. I tend to take it pretty easy on both my cars when it's this hot and humid out. __________________ 2012 - Present: 2011 CTS-V Sedan, A6, Airaid, Zmax TB and Tune by R.P.M. = 535 hp/503 lb-ft. 2009 - 2012: 2010 2SS RS IBM M6, MGW Shifter, BMR Trailing Arms/Tunnel Brace, Roto-Fab CAI, VMAX Ported TB, Kooks 6511-Complete (Headers, X-Pipe, Mufflers), dyno tuned by R.P.M. = 415 hp/412 lb-ft. "Not giving a f^k is truly the greatest luxury, and no luxury car gives fewer f^k's than a CTS-V." - Matt Hardigree

07-24-2011, 11:37 PM	#9
BigDan Drives: bug Join Date: May 2009 Location: nv Posts: 1,319	I thought on all new cars or at lest the few I've heard of automatically turns off the AC compressor during WOT situations. There is something definitely wrong and need a visit to the dealer.

07-25-2011, 09:39 AM	#11
Chevrolet Customer Svc Drives: GM Vehicles Join Date: Jun 2010 Location: Michigan Posts: 9,328	RavenSS, have you had the time to take your vehicle in to be checked over just to be sure there isn't anything actually wrong with the vehicle? If you need any help working with the dealer let me know! Jeff Morris, Chevrolet Customer Service

07-28-2011, 01:42 PM	#13
Chevrolet Customer Svc Drives: GM Vehicles Join Date: Jun 2010 Location: Michigan Posts: 9,328	Thanks for your reply. Hopefully your work can slow down enough for you to at least drop the vehicle off. I hope it's a quick fix for you and you can get back to enjoying your vehicle as soon as possible! Jeff Morris, Chevrolet Customer Service

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