Surging/ hesitation - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

cmore · 03-15-2011, 08:11 PM

Quote:

Originally Posted by Hot Lava

I am having the same issue with my 2011. It is driving me nuts cause I didn't pay that much money for a car to run like this. It didn't do it at first when I bought it and then around 800 miles I really started to notice it. Mine does it at high and low speeds and is almost not enjoyable to drive. To get rid of it I have to give it more gas. I constantly use premium gas. The dealer I first took it into said it was a driveline droan and then later said it was the AFM and was normal operation. I don't understand how anyone could say this is normal operation for a $40k car. Sorry about my rants and raves just really tired of this issue as I am sure many of you are too.

Mine now has about 6700 miles and is still doing it.

Rock-It Man · 03-15-2011, 08:19 PM

Quote:

Originally Posted by cmore

GM has not been up front with the whole AFM issue. If I was told that when AFM enables and disables, I would some times feel hesitation, surging and exhaust noise and that would allow me to save 1 mile per gal (or ever how much) then I could have made a more informed decision as to weather I wanted to have a car with that system. I talked to salesman at 2 dealers about AFM and both said u would not notice the operation. Its been used on PUs for years. I was blind sided by this.

Because of this crap we loose 25HP, have a more complicated system and have to put up with hesitation, surging and exhaust noise. And to add to the insult we have to pay a 1185 premium.

You give up 25 peak hp, but the flatter torque curve that comes with variable valve timing actually gives you MORE hp at engine speeds under 4200 rpm (the range you operate in 90% of the time).

AFM is noticeable, for sure, but fortunately, the seamless A6 tranny more than makes up for it.

But, if you don't believe me, get a manual.

cmore · 03-15-2011, 08:21 PM

Would take to big of a finical hit to swap to a manual. Just wish they would have a way to turn it off.

bamacarfool · 03-16-2011, 06:23 AM

Welcome to my world! I've got 26K miles on my car now (2SS/automatic) and I noticed this from day 1 after picking up my car (ordered as soon as I could, paid $2500.00 premium!). My dealer told me to "call Chevrolet" - I did - what a joke! No help at all, pretty much told me to live with it - it's "how it's designed to work" according to them. AFM is not a feature, it is totally riduculous the way it works. Since about 1K miles I've driven the car with the paddles to avoid having to deal with the herky-jerky crap of the AFM. I owned an '02 Camaro SS Anniversary Edition before this car, and a '99 SS before that. When I've had enough of dealing with my "new" Camaro with the AFM I'll buy something else. I told Chevrolet "customer service?" that I would NEVER buy another GM product and they told me to "have a nice day". This is the "new" GM they adverstise on TV. I think a competitor designed this to drive customers away from GM - it worked for me!

DangerZL1 · 03-16-2011, 03:25 PM

Has anyone considered using a tuner to turn off the AFM? I'd do this berfore dealing with the problem if GM can't fix it, and especially before considering trading the car in.

cmore · 03-16-2011, 04:15 PM

Yes, but not ready to ditch the warranty, just yet.

BIGSWOLE · 03-16-2011, 05:18 PM

Quote:

Originally Posted by sub zero

i have same problem in my l99 , i feel the hesitates in the first monthes but i'm didn't take it in seriously because it was happening to me at low speed and i dedn't changed my exhaust that time , but now i change my exhaust system and usually i drive my car in high way and i'm just feeling the hesitates and with the new exhaust it make high noise during driving and i feel that noise aulso when i puting in cruise control at 140km , i thought this noise comes from the exhaust at the beginning ..

the thing which i'm not know why it's happen , during i'm driving in high speed and the cruise control worked in 140km , i try to change the gear shift to manual and the sound is just desappeared !!

i hated the automatic gear after happen to me this problem specialy with MAGNAFLOW exhaust the sound come huge !!

HUH?????

bamacarfool · 03-17-2011, 06:18 AM

Quote:

Originally Posted by DangerouSS

Has anyone considered using a tuner to turn off the AFM? I'd do this berfore dealing with the problem if GM can't fix it, and especially before considering trading the car in.

Yes, I thought about it. Then I thought about the fact that my warranty would be gone (per the dealer) - hence my decision to use the paddle shifters instead of running it off a cliff and collecting the insurance money and buying something else. It was the way I was treated by the dealer (Maher Chevrolet in St Pete, Fl.) and GM that really got me fired up. "Give us your money - then go away"! I'm done with GM!

SleepWarz · 03-17-2011, 07:17 PM

Only when cold for me.

2010_BumbleBee · 03-18-2011, 02:47 PM

AFM tuned OUT..... ONLY way for me.... Lets see if GM voids warranty.... I would love that battle....

Rich1 · 03-18-2011, 03:38 PM

I also had my AFM turned off. The car runs and sounds so much better....

myslo$$ · 05-03-2011, 02:12 AM

Quote:

Originally Posted by Chevrolet Customer Svc

David79z28, could you send your case number so that I can review it? Also when we give our customers the resolution for their case we are given (most times) the resolution from the dealership as per their diagnosis of your vehicle and situation at the time. This is why in some cases we do suggest that you take your vehicle to another dealership to see if the other dealership can offer any insight into the problem with the vehicle and possibly give a different resolution. It doesn't work all the time but many times it has been a determining factor in positive outcomes. I hope that answers your question. I hope to hear from you soon.

Jeff Morris, Chevrolet Customer Service

Jeff, no disrespect, but Chevrolet must know by now they have a hesitation problem on the L99 engine judging from all the posts on this forum and, if there was a fix for it, they would have issued a service bulletin by now. Taking it to another dealer isn't going to solve a thing, just waste the owners time and try his patience. I have a feeling these posts are just the tip of the iceberg. How many other people don't bother to post, or even take the time or bother to part with their car long enough to try and get it fixed. I tried the dealer route once and, after two days without it, was told I needed to use premium fuel. That's like a slap in the face. 93 octane gas is all my 2010 SS has seen since the odo showed 4 mi. I can't speak for the gas that was in it before I got it. I got back in my stock '02 SS automatic today and realized what a muscle car is supposed to do. Push on the throttle and it goes - no lag , no hesitation, no reduced power and it will run side by side with my new one! How is that possible considering the 2SS has 2 extra gears, an extra 30 cu.in., and a supposed 50+ horsepower advantage?
As I see it, the only way we owners will ever see a resolution to this problem is to make it widely known that there is a problem and that Chevy doesn't know how to fix it. Maybe that might light a fire under somebody's duff to try and solve the problem.

Chevrolet Customer Svc · 05-04-2011, 02:17 PM

myslo$$, I understand your position and I am sorry to hear about the problems you've been having with your vehicle. Unfortunately the best and often times only way for us to assist our customers is through our dealership network and our Customer Assistance team. If you've been to the dealership and have not contacted our Customer Assistance then I would like to setup a case for you with them to make sure that we do what we can to assist you and make sure that we are made aware of these issues. If we are not contacted then we do not get this information and are more or less blinded to the issues due to a lack of information. This is where I come in. I forward these issues on to the proper departments for analysis, review and hopefully action. I hope that helps to explain part of the reason of why I am here and I am doing my best to assist in this matter.

Jeff Morris, Chevrolet Customer Service

thesaint · 07-05-2011, 06:13 PM

I have these exact symptoms of hesitation, especially on the highway. Set the cruise and it feels like the car is got a major problem bucking, hunting, but no light on the dash? I would really like to know what the hell this is before I bring it into my dealer. 2011 l99 ss with 900mi on the clock.

I have checked my maf when I got the car, it was the single letter, purchased the one that has been designated to be "strong" just to be safe.

03-18-2011, 03:38 PM	#39
Rich1 Drives: 2023 ZL1 Camaro Hot Red Join Date: Dec 2009 Location: St. Louis Posts: 358	I also had my AFM turned off. The car runs and sounds so much better.... Last edited by Rich1; 04-22-2011 at 11:03 AM.

05-04-2011, 02:17 PM	#41
Chevrolet Customer Svc Drives: GM Vehicles Join Date: Jun 2010 Location: Michigan Posts: 9,327	myslo$$, I understand your position and I am sorry to hear about the problems you've been having with your vehicle. Unfortunately the best and often times only way for us to assist our customers is through our dealership network and our Customer Assistance team. If you've been to the dealership and have not contacted our Customer Assistance then I would like to setup a case for you with them to make sure that we do what we can to assist you and make sure that we are made aware of these issues. If we are not contacted then we do not get this information and are more or less blinded to the issues due to a lack of information. This is where I come in. I forward these issues on to the proper departments for analysis, review and hopefully action. I hope that helps to explain part of the reason of why I am here and I am doing my best to assist in this matter. Jeff Morris, Chevrolet Customer Service Last edited by Chevrolet Customer Svc; 07-06-2011 at 05:21 PM.

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03-15-2011, 08:21 PM	#31
cmore Drives: 2011 Victory Red Auto 2SS Join Date: Aug 2010 Location: West Tn Posts: 628	Would take to big of a finical hit to swap to a manual. Just wish they would have a way to turn it off.

03-16-2011, 06:23 AM	#32
bamacarfool Drives: 2010 Camaro SSII Join Date: Jul 2009 Location: Florida Posts: 17	Welcome to my world! I've got 26K miles on my car now (2SS/automatic) and I noticed this from day 1 after picking up my car (ordered as soon as I could, paid $2500.00 premium!). My dealer told me to "call Chevrolet" - I did - what a joke! No help at all, pretty much told me to live with it - it's "how it's designed to work" according to them. AFM is not a feature, it is totally riduculous the way it works. Since about 1K miles I've driven the car with the paddles to avoid having to deal with the herky-jerky crap of the AFM. I owned an '02 Camaro SS Anniversary Edition before this car, and a '99 SS before that. When I've had enough of dealing with my "new" Camaro with the AFM I'll buy something else. I told Chevrolet "customer service?" that I would NEVER buy another GM product and they told me to "have a nice day". This is the "new" GM they adverstise on TV. I think a competitor designed this to drive customers away from GM - it worked for me!

03-16-2011, 03:25 PM	#33
DangerZL1 Drives: 2023 Black ZL1 Auto Join Date: Oct 2009 Location: FEMA Region 4 Posts: 2,936	Has anyone considered using a tuner to turn off the AFM? I'd do this berfore dealing with the problem if GM can't fix it, and especially before considering trading the car in.

03-16-2011, 04:15 PM	#34
cmore Drives: 2011 Victory Red Auto 2SS Join Date: Aug 2010 Location: West Tn Posts: 628	Yes, but not ready to ditch the warranty, just yet.

03-17-2011, 07:17 PM	#37
SleepWarz Banned Drives: 1991 New Yorker, 69 Tbird, ABM2SSRS Join Date: May 2009 Location: BC Canada Posts: 2,248 View My Garage	Only when cold for me.

03-18-2011, 02:47 PM	#38
2010_BumbleBee 2010 Camaro SS/RS Drives: 2010 Camaro SS/RS Join Date: Jan 2011 Location: Elk Grove CA Posts: 155	AFM tuned OUT..... ONLY way for me.... Lets see if GM voids warranty.... I would love that battle....

07-05-2011, 06:13 PM	#42
thesaint Drives: 2011 camaro ss/rs Join Date: May 2011 Location: south florida Posts: 57	I have these exact symptoms of hesitation, especially on the highway. Set the cruise and it feels like the car is got a major problem bucking, hunting, but no light on the dash? I would really like to know what the hell this is before I bring it into my dealer. 2011 l99 ss with 900mi on the clock. I have checked my maf when I got the car, it was the single letter, purchased the one that has been designated to be "strong" just to be safe.