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10-18-2015, 01:50 PM
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#1 |
 
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2011 SS keeps stalling
I have a 2011 SS with a cam, kook headers, vararam CAI, heads and lax intake manifold. Car has been tuned also, dyno came I at 508 RWHP. Car is great but sometimes the car will stall when depressing the clutch when coming to a light or downshifting. Have been back to the tuner twice and car still does it. Keep in mind the last mods I did were the heads and manifold and the car was fine before those last upgrades. It really does it more when the A/C is on . Has anyone else had this problem? Could it be the new manifold? The tune shop can't figure it out . I also have a valve cover oil leak that he can't seem to fix either. Love the car but have been chasing these problems for 7 months now?
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10-18-2015, 01:53 PM
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#2 |
 
Drives: Black SS Join Date: Aug 2013
Location: North Dakota
Posts: 434
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Sounds like that last job they did resulted in them not putting it back together properly. Something is loose.
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10-18-2015, 03:02 PM
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#3 |
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They have had it in twice since them. Did a retune etc. wondering if anyone heard of this before with the mods I have.
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10-18-2015, 03:44 PM
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#4 |
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Master ASE, GM, LSX Tech.
Drives: 2010 Camaro SS Join Date: Oct 2012
Location: Austin, TX
Posts: 1,034
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I would look at the fuel trims and check for a vacuum leak.
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2010 2SSRS A6, Custom Pat G. Cam, WCCH Cylinder Heads, Kooks Headers/Exhaust, BTR Valvetrain, Fluidampr 25% UDP, All Engine ARP bolts, Flex-a-lite radiator/Trans cooler, Yank converter, PFADT Suspension, ADM Race Intake/Scoop, Torq tow hook, CFD auto shifter, Dynojet AFR gauge, Aeroforce scan gauge, Brake Performance rotors/pads
Prothane bushings, ZL1 wheels, spoiler, Z/28 wickerbill, 1LE Aero/Suspension Package, Anderson Composites COPO Carbon Fiber Hood, LED lighting, Elite Catch Can, Improved Racing oil pan baffle, crank scraper, windage tray 480 RWHP 452 RWTQ + Nitrous Express 150 Shot |
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10-18-2015, 04:20 PM
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#5 |
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Just spoke with my shop and he said they went through the fuel system and new rails and checked several times for a vacuum leak but found nothing.
Could it be the LSX manifold. Ive heard about them cracking or something like that internally.
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10-18-2015, 06:54 PM
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#6 |
    
Drives: 2011 2ss/rs Join Date: Nov 2011
Location: Canada
Posts: 1,431
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Put your stock manifold back on and see if it goes away
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10-18-2015, 07:01 PM
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#7 |
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@Caswell, that's what we are planning to try next.
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10-18-2015, 07:03 PM
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#8 |
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Drives: 2011 2ss/rs Join Date: Nov 2011
Location: Canada
Posts: 1,431
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The old mechanic way of checking for vacuum leak is spray a little starting fluid or ether and see if the Rpms change.
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10-19-2015, 06:54 AM
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#9 |
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old school chevy rodder
Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012
Location: Oregon
Posts: 5,587
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If that's not it, it must be the throttle in the tune. My car tuned had to have the throttle upped because it would fall flat when deceleration was out of gear,( coasting). and stall and die. Then would restart no problem but hey I have electric power steering so that helped not kill me.... Not the idle as that should be about 950..... the throttle...... I use Wongs performance engineering in Vancouver he does HP tuning and has the GM software too.
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 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shopLast edited by christianchevell; 10-19-2015 at 05:34 PM. |
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10-19-2015, 07:50 AM
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#10 |
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Drives: 2011 Camaro SS/RS Convertible Join Date: Jun 2015
Location: Columbus
Posts: 444
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What is the idle set at?
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 2011 Camaro SS/RS Vert - Jewel Red Tintcoat, 6M, 231/247 Comp Cam, Kooks headers, Borla ATAK, ATI under drive pulley, Richmond 4.10s, LS9 clutch, Hurst shifter, BMR Springs |
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10-19-2015, 02:45 PM
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#11 |
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I have a cam so the idle is around 900 or so.
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10-19-2015, 03:19 PM
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#12 |
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@christian
My car will drop out when I depress the clutch but it only happens once in a while but more frequently when the A/C is on. Did you have the same problem?
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10-19-2015, 03:33 PM
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#13 |
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H-Town Camaro Club Member
Drives: 17 Hyper Blue Metallic KLR-ZL1 Join Date: May 2009
Location: Pearland Tx.
Posts: 2,035
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You should data log it and then it will show up. That way your tuner can see if it is in the tune or at least give him a direction to look.
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10-19-2015, 04:21 PM
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#14 | |
      Drives: 2010 Camaro SS/RS Join Date: Mar 2014
Location: somewhere in MD
Posts: 4,883
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Quote:
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2010 2SS/RS
Z/28 intake, NW, FAST 102, speed engineering LT's, some exhaust, ATI -10% pulley, GM flex fuel injectors, DSX flex fuel sensor, MGW shifter, HP Tuners, some suspension work, stickers and a little weight loss. 12.63 @113.53 |
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