Common issues/problems with the L99 engine? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Quicksilverman · 05-10-2017, 03:34 AM

Hi everyone I am considering a 10-15 Camaro SS A6 automatic and I want to know what are the common issues/problems or failures with the L99 engines? What issues/problems have you had with your 10-15 Camaro SS A6 automatic? What are the best upgrades to do to avoid failures on these cars? I really like the 10-15 Camaro SS but I don't like the AFM. Your knowledge and experiences are much appreciated thank you. I don't know if I should get the factory warranty or not?

Gunmetal Speedster · 05-10-2017, 04:19 AM

http://www.camaro5.com/forums/forumdisplay.php?f=70

Above is a link to the "problem" section of the forums. Browsing around there will give you a good idea of problems people are having with their rides. The 5th gen platform is overall a strong one so not too many pertinent problems exist.

If you do decide to go with the factory warranty, know that you will be stuck with AFM as the only way to get rid of it is by tuning it out.

lownslowss · 05-10-2017, 06:59 AM

Lifters. Afm. Dod.

Sent from my iPhone using Tapatalk

Royal Tiger · 05-10-2017, 07:04 AM

You can get rid of AFM with a Range device. Just remember to remove it if the car sits for 3-4 days as it will drain the battery. They pop up in the Marketplace for around $100.

Junior · 05-10-2017, 09:21 AM

Drive On Demand is Active Fuel Management. ...And it's lame.

Edit: Displacement On Demand*

qcman · 05-10-2017, 10:03 AM

You won't read much on here about L99 problems at least that I have seen. Yes the AFM lifters are its weak point but if you read here the problems with them are extremely rare. The Range device as noted can turn AFM off without affecting warranty.

Many of us L99 owners are tuned including the trans which turns the car into an animal... But that basically voids the PT warranty so that should only be done at your own peril.

Having said that screw the extra warranty and tune the L99! Best mod for the money hands down.

christianchevell · 05-10-2017, 10:49 AM

that's displacement on demand , and its problematic at best with the lifters being different and in the valley pan the electric actuators that make the lifters oil be diverted mostly so they don't pump up...and the cam phaser for the VVT along with solid stem intake valves keeping the RPM lower for redline and the cam and compression being slightly different are some of the biggest differences.... Along with the trans needing a tune....

Junior · 05-10-2017, 11:51 AM

Quote:

Originally Posted by christianchevell

that's displacement on demand

Yeah, I must have been thinking about driving...

Detroit Muscle · 05-10-2017, 03:37 PM

had my L99 for 47000 miles now, not a single issue, you can see my mods in my singature

Royal Tiger · 05-10-2017, 04:37 PM

Quote:

Originally Posted by christianchevell

that's displacement on demand , and its problematic at best with the lifters being different and in the valley pan the electric actuators that make the lifters oil be diverted mostly so they don't pump up...and the cam phaser for the VVT along with solid stem intake valves keeping the RPM lower for redline and the cam and compression being slightly different are some of the biggest differences.... Along with the trans needing a tune....

Christian, I always value your opinion on these cars/motors. One of the reasons I run the Range, besides the sound with my beautiful Borla exhaust, is I had heard keeping the car out of AFM is better for the motor. Reading your post it seems to confirm that. Am I correct?

ZWA SS · 05-11-2017, 02:53 AM

129,000 miles on mine with no mechanical problems. Tuned and full exhaust shortly after I bought it. Cammed it at about 127,000. Stock valvetrain looked excellent for its age.

05-10-2017, 03:34 AM	#1
Quicksilverman Drives: 2012 Chevrolet Camaro Join Date: May 2017 Location: Atlanta,Georgia Posts: 16	Common issues/problems with the L99 engine? Hi everyone I am considering a 10-15 Camaro SS A6 automatic and I want to know what are the common issues/problems or failures with the L99 engines? What issues/problems have you had with your 10-15 Camaro SS A6 automatic? What are the best upgrades to do to avoid failures on these cars? I really like the 10-15 Camaro SS but I don't like the AFM. Your knowledge and experiences are much appreciated thank you. I don't know if I should get the factory warranty or not?

05-10-2017, 04:19 AM	#2
Gunmetal Speedster Drives: Savitar; The 500rwhp N/A Monster! Join Date: Aug 2016 Location: Middletown, Ohio Posts: 2,914 View My Garage	http://www.camaro5.com/forums/forumdisplay.php?f=70 Above is a link to the "problem" section of the forums. Browsing around there will give you a good idea of problems people are having with their rides. The 5th gen platform is overall a strong one so not too many pertinent problems exist. If you do decide to go with the factory warranty, know that you will be stuck with AFM as the only way to get rid of it is by tuning it out. __________________ **SOLD504HP/433**TQ \| Night Fury cammed • Cold Air Inductions intake • Bo White ported TB • Speed Engineering 1 7/8 longtubes • NPP catback • QTP low profile cutouts • Powerbond 25% UDP • 3.73 gears • JRE scoop • ZL1 grille • R1 Concepts drilled/slotted rotors • built/tuned by Weapon X Motorsports Instagram \| YouTube \| Build Thread

05-10-2017, 06:59 AM	#3
lownslowss PaPa Smurf Drives: 2022 SS 1LE Join Date: Jul 2014 Location: League City Posts: 632 View My Garage	Lifters. Afm. Dod. Sent from my iPhone using Tapatalk __________________ 2022 Rapid Blue SS 1LE

05-10-2017, 09:21 AM	#5
Junior Drives: 2014 2SS/RS A6 AGM Join Date: Apr 2010 Location: Maryland Posts: 526	Drive On Demand is Active Fuel Management. ...And it's lame. Edit: Displacement On Demand* Last edited by Junior; 05-10-2017 at 11:51 AM.

05-10-2017, 10:49 AM	#7
christianchevell old school chevy rodder Drives: 2021 zl1 a-10 WildCherry Join Date: Jul 2012 Location: Oregon Posts: 5,622 View My Garage	that's displacement on demand , and its problematic at best with the lifters being different and in the valley pan the electric actuators that make the lifters oil be diverted mostly so they don't pump up...and the cam phaser for the VVT along with solid stem intake valves keeping the RPM lower for redline and the cam and compression being slightly different are some of the biggest differences.... Along with the trans needing a tune.... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data,Red Carbon Interior, Nav, RotoFab Big Gulp , Elite x2ultra, Borla ATAK, Driveshaft shop, BMR susp, Speed covers, intercoolers, ATI , 2650 MAG, DSX lid, 103 NW, TSP Longtubes & cats, LPE, 1le mods, ,LME cover, Katech pump and chain, Trunnions, BTR stage 2, LPE boostapump, Gforce, Speed eng , Granetteli, etc etc

05-10-2017, 07:04 AM	#4
Royal Tiger Account Suspended Drives: 2013 2SS/RS Convertible Join Date: Apr 2016 Location: Lehigh Valley, PA Posts: 3,873	You can get rid of AFM with a Range device. Just remember to remove it if the car sits for 3-4 days as it will drain the battery. They pop up in the Marketplace for around $100.

05-10-2017, 10:03 AM	#6
qcman Drives: 2013 Camaro 2SS RDP Tuned L99 Join Date: Apr 2013 Location: Ottawa, Canada eh? Posts: 1,889	You won't read much on here about L99 problems at least that I have seen. Yes the AFM lifters are its weak point but if you read here the problems with them are extremely rare. The Range device as noted can turn AFM off without affecting warranty. Many of us L99 owners are tuned including the trans which turns the car into an animal... But that basically voids the PT warranty so that should only be done at your own peril. Having said that screw the extra warranty and tune the L99! Best mod for the money hands down.

05-10-2017, 03:37 PM	#9
Detroit Muscle Drives: 2011 Camaro 2SS/RS L99 Join Date: Aug 2013 Location: Detroit, MI Posts: 659	had my L99 for 47000 miles now, not a single issue, you can see my mods in my singature __________________ Stainless Power Headers, High Flow Cats, CAI intake, SLP Loudmouth 1 exhaust, Dyno tune from Alternative Performance

05-11-2017, 02:53 AM	#11
ZWA SS BowtieBelle's SS Drives: 2010 Camaro SS Join Date: Jan 2012 Location: Perry, ok Posts: 1,075	129,000 miles on mine with no mechanical problems. Tuned and full exhaust shortly after I bought it. Cammed it at about 127,000. Stock valvetrain looked excellent for its age. __________________ My Z/SS http://www.camaro5.com/forums/showthread.php?t=286858 .