Mass air flow sensor - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ImperialSScamaro · 07-26-2012, 04:30 AM

I have found on a vendor website saying a weak air flow sensor can cause hesitation. Is that true? I have been complaining of cold engine hesitation and a rare miss my car has been giving me. No one will seem to answer my cry :(

GM said since no codes come up then theres no problem

I know something is wrong somewhere.

2012 SS M6
Stock

MMC · 07-26-2012, 04:44 AM

This is true but it only applies if you have added an aftermarket CAI system. The "weak" sensor is fine in a stock intake.

ImperialSScamaro · 07-26-2012, 05:12 AM

Then why does my car feel like I'm pulling a trailer sometimes? When I step on it there's a sudden lose of power before acceleration even with the nannies turned off. Only using 93 octane as well. Tried the fuse pull...

What should I do?

Scott@Bjorn3D · 07-26-2012, 05:36 AM

Is it an automatic? The automatic Camaro in my book is a let down without some mods done to it. In plain stock form it is not much fun.

Caswell239 · 07-26-2012, 05:57 AM

2012 ss M6

TheHorse13 · 07-26-2012, 06:00 AM

There are several threads on this issue on the forum. The short explanation is that when the car is cold the computer system is not regulating things. This is why you get the hesitation when it's cold. Once the car is up to temp, the computer does it's job and life is wonderful again. Bottom line, the cold engine hesitation is normal.

However, there are a number of MAF sensors with specific build codes that are known to be defective. Again, there is a thread here somewhere that shows you the MAF codes that are known to be the ones with weak readings.

ImperialSScamaro · 07-26-2012, 06:10 AM

Yes sir it happens All the time when the engine is cold and "sometimes/rare" when the temp is at normal operating ranges..

My dealer is no help to me because there is no check engine light.

ImperialSScamaro · 07-26-2012, 06:18 AM

2012 M6 <5000 miles

Nvincent4708 · 07-26-2012, 06:21 AM

Quote:

Originally Posted by ImperialSScamaro

2012 M6 <5000 miles

Did you drive it hard for any of those 5000 miles?

I drove my ls3 hard to break it in.. seated the rings and definitely had a ton of power.

if you baby'ed it during break it.. that may explain this

but the hesitation could possibly be the MAF.

If you have access to basic tools, we can assist you in telling whether you have the good MAF or bad MAF. But seeing it is a 2012.. Odds are you do not have a bad MAF by code..but possibly just bad in general.

ImperialSScamaro · 07-26-2012, 06:24 AM

I followed the 1500 mile break in process as the manual says to do.

Quackersacker · 07-26-2012, 06:26 AM

68 bucks for a strong MAF here change it and see. pretty cheap experiment.
http://marylandspeed.com/chevy-camar...1243.html#Mass

SlingShot · 07-26-2012, 06:28 AM

The biggest thing right now for most cars, is the weather. When things cool down and dry out they will run like a different car.

ImperialSScamaro · 07-26-2012, 06:31 AM

Please explain how the weather can change the performance of my LS3. Lol i pictured a dehydrated donkey being worked to death. Cause a degrade in its work performance.

ImperialSScamaro · 07-26-2012, 06:35 AM

How can I tell if it's a weak or bad sensor?

07-26-2012, 04:30 AM	#1
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	Mass air flow sensor I have found on a vendor website saying a weak air flow sensor can cause hesitation. Is that true? I have been complaining of cold engine hesitation and a rare miss my car has been giving me. No one will seem to answer my cry :( GM said since no codes come up then theres no problem I know something is wrong somewhere. 2012 SS M6 Stock

07-26-2012, 04:44 AM	#2
MMC Drives: CGM 2SS/RS, 1987 & 2014 Silverado Join Date: Oct 2010 Location: Spencerport, NY Posts: 1,012	This is true but it only applies if you have added an aftermarket CAI system. The "weak" sensor is fine in a stock intake. __________________

07-26-2012, 06:26 AM	#11
Quackersacker Drives: 2011 Camaro Convertible SS Join Date: Jan 2012 Location: Iowa Posts: 608 View My Garage	68 bucks for a strong MAF here change it and see. pretty cheap experiment. http://marylandspeed.com/chevy-camar...1243.html#Mass __________________

07-26-2012, 06:28 AM	#12
SlingShot Drives: 2012 ZL1 - #670 Join Date: Jun 2009 Location: Seminole, Fl. Posts: 8,009	The biggest thing right now for most cars, is the weather. When things cool down and dry out they will run like a different car. __________________

07-26-2012, 05:12 AM	#3
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	Then why does my car feel like I'm pulling a trailer sometimes? When I step on it there's a sudden lose of power before acceleration even with the nannies turned off. Only using 93 octane as well. Tried the fuse pull... What should I do?

07-26-2012, 05:36 AM	#4
Scott@Bjorn3D Drives: Kami, 2013 2SS LS3 Luvin Join Date: Oct 2008 Location: Eufaula, Alabama Posts: 6,427	Is it an automatic? The automatic Camaro in my book is a let down without some mods done to it. In plain stock form it is not much fun.

07-26-2012, 05:57 AM	#5
Caswell239 Drives: 2011 2ss/rs Join Date: Nov 2011 Location: Canada Posts: 1,431	2012 ss M6

07-26-2012, 06:00 AM	#6
TheHorse13 Drives: 2011 Black SS M6 Join Date: Oct 2010 Location: Harpers Ferry, WV Posts: 1,116	There are several threads on this issue on the forum. The short explanation is that when the car is cold the computer system is not regulating things. This is why you get the hesitation when it's cold. Once the car is up to temp, the computer does it's job and life is wonderful again. Bottom line, the cold engine hesitation is normal. However, there are a number of MAF sensors with specific build codes that are known to be defective. Again, there is a thread here somewhere that shows you the MAF codes that are known to be the ones with weak readings.

07-26-2012, 06:10 AM	#7
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	Yes sir it happens All the time when the engine is cold and "sometimes/rare" when the temp is at normal operating ranges.. My dealer is no help to me because there is no check engine light.

07-26-2012, 06:18 AM	#8
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	2012 M6 <5000 miles

07-26-2012, 06:24 AM	#10
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	I followed the 1500 mile break in process as the manual says to do.

07-26-2012, 06:31 AM	#13
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	Please explain how the weather can change the performance of my LS3. Lol i pictured a dehydrated donkey being worked to death. Cause a degrade in its work performance.

07-26-2012, 06:35 AM	#14
ImperialSScamaro Im a noob Drives: Black 2016 1SS Join Date: Jun 2012 Location: LA Posts: 199 View My Garage	How can I tell if it's a weak or bad sensor?