Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
DJ Grilles
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons

Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

Reply
 
Thread Tools
Old 09-28-2011, 11:20 PM   #1
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Oil Pump issue. Is the L99 just as prone?

Ok so over the summer a lot of members were reporting that their oil pumps would fail due to a stuck relief valve. Oil pressure would subsequently drop and some unfortunate members even suffered catastrophic failures. A solution to this problem was to "shimmy" the relief valve to prevent it from getting stuck. Originally I thought all 6.2's had this issue, but then a member in the thread below stated that L99's actually use a different pump, one with a "wider pump gear".


Does that therefore mean that L99's are immune to this oil pump failure or not?



See post #19 and 20.

http://www.camaro5.com/forums/showth...l+pump+failure

Last edited by Raptor626; 09-29-2011 at 12:15 AM.
Raptor626 is offline   Reply With Quote
Old 09-28-2011, 11:29 PM   #2
ipimpthisc
Banned
 
Drives: @twinturbo, cammed, intrcooled@
Join Date: Apr 2009
Location: nyc, EAST COAST HEAVY HITTERS
Posts: 748
Send a message via AIM to ipimpthisc
i wouldnt chance it...get the moroso upgrade man...this happened to me...thank God i was sitting idle when it did...
ipimpthisc is offline   Reply With Quote
Old 09-28-2011, 11:31 PM   #3
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Damn bro. That's a pretty huge job. How much do you estimate labor to be?
Raptor626 is offline   Reply With Quote
Old 09-28-2011, 11:40 PM   #4
ipimpthisc
Banned
 
Drives: @twinturbo, cammed, intrcooled@
Join Date: Apr 2009
Location: nyc, EAST COAST HEAVY HITTERS
Posts: 748
Send a message via AIM to ipimpthisc
the oil pump was about 150, i alsodid the belt tensioner, dunno how much was...but if ur gonna do this its about 800 labor,,,i would spend another 2k for a full cam swap, with upgraded springs, retainer etc.
ipimpthisc is offline   Reply With Quote
Old 09-29-2011, 07:03 AM   #5
axis
Search Ninja
 
axis's Avatar
 
Drives: 2010 Black 2SS/RS A6
Join Date: Oct 2009
Location: Central Ark
Posts: 6,574
I think of this as more of a "do it if you're already in there" kind of thing. It seems like a waste to spend $1k to change just the oil pump on your stock engine when it's covered under a warranty.
__________________
2010 Black 2SS/RS A6
Halltech Yellowjacket fed
GPI modded intake manifold
Kooks LT's/ Dynomax VT
Pfadted (springs/sways)
Dyno tuned by Rhino and GPI

I once parallel parked a train.
axis is online now   Reply With Quote
Old 09-29-2011, 10:01 AM   #6
hunter1660
 
hunter1660's Avatar
 
Drives: 2011ss/rs camaro
Join Date: Sep 2011
Location: florida
Posts: 400
I have the L99 and afte the lifter swap I have lots better oil pressure. Cold idle is 50lbs. Warmed up cruising is around 45psi if It quits I'm going to hold it to the floor. And let GM EAT IT
hunter1660 is offline   Reply With Quote
Old 09-29-2011, 10:03 AM   #7
LittleMT
user bann'd
 
LittleMT's Avatar
 
Drives: Chevy SS
Join Date: May 2009
Location: Hepcat City
Posts: 1,469
I have yet to read about a l99 having this failure..
__________________

Chantilly Lace, the 2011 Rockabilly Jukebox..ADM built..617rwhp, geared A6.
LittleMT is offline   Reply With Quote
Old 09-29-2011, 11:39 AM   #8
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Quote:
Originally Posted by hunter1660 View Post
I have the L99 and afte the lifter swap I have lots better oil pressure. Cold idle is 50lbs. Warmed up cruising is around 45psi if It quits I'm going to hold it to the floor. And let GM EAT IT


So you just have the LS3 conversion and the stock L99 oil pump?
Raptor626 is offline   Reply With Quote
Old 09-29-2011, 11:59 AM   #9
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Quote:
Originally Posted by LittleMT View Post
I have yet to read about a l99 having this failure..

That makes me feel better, but I think it's one of those things where only time will tell.
Raptor626 is offline   Reply With Quote
Old 09-29-2011, 12:13 PM   #10
BLACK10

 
BLACK10's Avatar
 
Drives: 2010 CAMARO. 10.04@133mph, 1.4 60'
Join Date: Jul 2009
Location: Lafayette, Louisiana
Posts: 4,985
$800 for an oil pump change? wow
__________________
BLACK10 is offline   Reply With Quote
Old 09-29-2011, 12:42 PM   #11
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Quote:
Originally Posted by BLACK10 View Post
$800 for an oil pump change? wow

I know It seems that everything costs so much more in the North East.
Raptor626 is offline   Reply With Quote
Old 09-29-2011, 12:56 PM   #12
hunter1660
 
hunter1660's Avatar
 
Drives: 2011ss/rs camaro
Join Date: Sep 2011
Location: florida
Posts: 400
No ls3 for me I'ma hold out for the warranty kinda guy good thing too...had afm lifters replaced under warranty after a year listened to it tick tick tick on startup after it set for a Couple hours .. The oil pressure improved greatly with the lifter swap..
hunter1660 is offline   Reply With Quote
Old 09-29-2011, 12:56 PM   #13
Nvincent4708
Former 2011 LSX/SS Owner
 
Nvincent4708's Avatar
 
Drives: '14 Grand Cherokee Trail-Rated
Join Date: Nov 2010
Location: Earleville, MD
Posts: 24,916
Quote:
Originally Posted by BLACK10 View Post
$800 for an oil pump change? wow
a LOT of work is involved with this though..pretty much the same amount of work as doing a cam swap minus having to pull a few parts.

plus the part is 1-200
Nvincent4708 is offline   Reply With Quote
Old 09-29-2011, 01:01 PM   #14
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Quote:
Originally Posted by Nvincent4708 View Post
a LOT of work is involved with this though..pretty much the same amount of work as doing a cam swap minus having to pull a few parts.

plus the part is 1-200

Right, it would definitely make sense to just cam it while you're at it.
Raptor626 is offline   Reply With Quote
Old 10-01-2011, 02:24 AM   #15
BLACK10

 
BLACK10's Avatar
 
Drives: 2010 CAMARO. 10.04@133mph, 1.4 60'
Join Date: Jul 2009
Location: Lafayette, Louisiana
Posts: 4,985
Quote:
Originally Posted by Nvincent4708 View Post
a LOT of work is involved with this though..pretty much the same amount of work as doing a cam swap minus having to pull a few parts.

plus the part is 1-200

not a lot for a mechanic shop, most shops can do a full cam swap and tune in 10-12 hrs. I think hes just being quoted a high price.:(
__________________
BLACK10 is offline   Reply With Quote
Old 10-01-2011, 07:33 AM   #16
tkrupinski
Hugger Orange
 
tkrupinski's Avatar
 
Drives: 2010 Hugger Orange 2SS/ RS YSI/4l80
Join Date: May 2010
Location: Marysville Ohio
Posts: 517
oil pump

The guys who had pump failures what was the mileage on your cars. Before I did my cam swap I contacted a few of the reputable builders on this site and was told, don't fix what is not broke so I reused my oil pump. No problems so far. From what I was told a pump usually fails before the mileage that was on my car, 10,000. I was a little shocked when the builders that I talked to said pump failures are rare and that the stock pump is actually a more reliable pump. If I have pump issues down the road I will post my mileage. 14,500 to date LS3.
tkrupinski is offline   Reply With Quote
Old 10-01-2011, 08:39 AM   #17
Rocky1974

 
Rocky1974's Avatar
 
Drives: 2010 RJT 2SS M6 Camaro
Join Date: Feb 2011
Location: Garrison,KY
Posts: 907
GM says the L99 is affected.

PIP4158C: Low Oil Pressure Due To Seized Oil Pressure Relief Valve - (Dec 29, 2009)


Subject: Low Oil Pump Pressure due to Seized Oil Pressure Relief Valve

Models: 2008-2009 Buick Lacrosse, Allure (Canada Only)
2007-2010 Cadillac CTS-V, Escalade
2007-2010 Chevrolet Avalanche, Corvette, Silverado, Suburban, Tahoe
2007-2008 Chevrolet Monte Carlo SS
2007-2009 Chevrolet Impala SS, Trail Blazer
2009-2010 Chevrolet Colorado
2010 Chevrolet Camaro
2007-2010 GMC Envoy, Sierra, Yukon
2009-2010 GMC Canyon
2008-2010 Hummer H2
2008-2010 H3 Alpha
2008 Pontiac Grand Prix GXP
2008-2010 Pontiac G8 GT
2007-2009 Saab 97x
with the Following Aluminum V8 Engine RPOs:
L76, L77, L92, L94, L99, L9H, LC9, LH6, LH8, LH9, LS2, LS3, LS4, LS7, LS9, LSA, LZ1

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:

Some customers may complain of low oil pressure, no oil pressure, and/or engine noise, which may be the result of a sticking oil pump pressure relief valve. In some instances, this may occur intermittently if the valve frees up when the engine cools down.
Recommendation/Instructions:

If SI diagnosis isolates low mechanical oil pressure at the oil filter housing and oil pressure sensor, replace the oil pump, flush the oil cooler lines (if equipped), clean the inside of the oil pan, change the oil and filter, and re-evaluate the concern.

Notice: If an engine noise is noticed after replacing the oil pump, follow the SI diagnosis and repair the engine as necessary.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
Rocky1974 is offline   Reply With Quote
Old 10-01-2011, 02:19 PM   #18
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
This ^ seems to have been posted in late 2009. Do you think GM addressed the issue in the 2011's?
Raptor626 is offline   Reply With Quote
Old 10-01-2011, 02:38 PM   #19
Synner


 
Drives: 2011 2SS/RS M6
Join Date: May 2011
Location: VA
Posts: 2,962
No. Same pump and same design. No revised part number has ever been released.
Synner is offline   Reply With Quote
Old 10-01-2011, 03:11 PM   #20
kmcd
1,425 hp / supercharged
 
kmcd's Avatar
 
Drives: (2010 2SS/L99) (1999 Corvette)
Join Date: Oct 2009
Location: Austin, TX
Posts: 1,101
Quote:
Originally Posted by Synner View Post
No. Same pump and same design. No revised part number has ever been released.
However, the L99 and LS3 OEM pumps are different part numbers. I have still yet to hear or read about an L99 pump failing.
__________________
"If it's too loud...well, you know the rest."
kmcd is offline   Reply With Quote
Old 10-02-2011, 12:16 AM   #21
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Here's the thing though. I'm unclear about what's causing the failure. Is it a faulty design, or are some just defective? I'm asking because the solution, which is to shim the relief valve, seems to imply that the design itself is causing the issue. So if the design is the core of the problem, why the f$@# hasn't GM changed it? Because if it is a design flaw, that means everyone will encounter this issue at one point or another.

I really hope it's just a defective few, because GM would be retarded not to alter the design in some way.
Raptor626 is offline   Reply With Quote
Old 10-02-2011, 12:18 AM   #22
Raptor626
Account Suspended
 
Drives: 2011 Camaro SS Summit White
Join Date: Apr 2010
Location: Astoria, New York
Posts: 803
Quote:
Originally Posted by Synner View Post
No. Same pump and same design. No revised part number has ever been released.
Someone said in the thread I posted that the L99 has a "wider pump gear", I'm not sure if that makes a difference though.
Raptor626 is offline   Reply With Quote
Old 10-02-2011, 05:20 AM   #23
tkrupinski
Hugger Orange
 
tkrupinski's Avatar
 
Drives: 2010 Hugger Orange 2SS/ RS YSI/4l80
Join Date: May 2010
Location: Marysville Ohio
Posts: 517
Quote:
Originally Posted by Raptor626 View Post
Here's the thing though. I'm unclear about what's causing the failure. Is it a faulty design, or are some just defective? I'm asking because the solution, which is to shim the relief valve, seems to imply that the design itself is causing the issue. So if the design is the core of the problem, why the f$@# hasn't GM changed it? Because if it is a design flaw, that means everyone will encounter this issue at one point or another.

I really hope it's just a defective few, because GM would be retarded not to alter the design in some way.
What I was told is it is the bore in the housing that is not machined correctly or the finish on the relief valve bore is not polished fine enough. Call ADM he can explain it better. How many miles do you have on your car?
tkrupinski is offline   Reply With Quote
Old 10-02-2011, 09:46 AM   #24
Synner


 
Drives: 2011 2SS/RS M6
Join Date: May 2011
Location: VA
Posts: 2,962
Quote:
Originally Posted by Raptor626 View Post
Someone said in the thread I posted that the L99 has a "wider pump gear", I'm not sure if that makes a difference though.
The problem doesn't have to do with the pump gear, it's casting imperfections causing the pressure spring to stick and then not provide pressure. If there's no pressure to drive the pump it doesn't matter the size of the gear. Whether or not it has less casting imperfections is anyones guess.

Considering the number of LS based vehicles out there the failure rate is incredibly low. I plan on taking mine out and giving it a port/polish when I do my cam swap just to be safe. But if you're under warranty then don't worry about it. I wouldn't tear apart the front of my motor just for that.
Synner is offline   Reply With Quote
 
Reply

Tags
failure, l99, oil, pump, valve

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY: Camaro Oil Change adub4185 Camaro DIY & HOW-TO instructions & discussions 179 04-08-2014 02:30 AM
Unofficial 1/4 Mile (V8) 2010+ Camaro Fast List Merc Dragstrip and Launch Techniques Discussion 254 04-01-2014 10:40 AM
GAS PRICES GOING UP 5 CENTS IN GTA APRIL 2ND, 2011 SQUALO Canada 56 04-21-2011 03:19 PM
Major U.S. oil source is tapped KILLER74Z28 Off-topic Discussions 32 10-30-2007 09:47 AM


All times are GMT -5. The time now is 05:14 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.