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10-26-2021, 03:26 PM
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#1 |
 Drives: 2010 2ss camaro Join Date: Oct 2021
Location: Fallbrook, CA
Posts: 6
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Mrjeffwee's camaro
So I have a 2010 2ss ls3 and im having a problem with a p0300 code ive changed the plugs and checked the coil I changed the injector on the cylinder. When it's at operating temp and I punch it from a stand still it sputters and I get the code. Doesn't do it when it cold. Help
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10-26-2021, 03:56 PM
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#2 |
    
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Just so you are aware, the P0300 code is a RANDOM misfire code, it's not tied to a specific cylinder. A specific cylinder would be identified as a P0301, P0302, etc.
My guess is that your spark plugs, wires, and coils are all fine, like you stated. My bet is that you have a weak cylinder. You can do two relatively simple tests to see if all 8 cylinders are putting out correctly. 1. Get an Infra-Red thermometer and check each exhaust port of the manifold while the engine is running (after it has warmed up), 2. Perform a compression test of all 8 cylinders. Good luck, and let us know what you find. -Scott
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745RWHP/634RWTQ on 93 @ 10psi
806/676 on E85 @ 10psi  COTW 9/8/14 |
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10-27-2021, 07:36 AM
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#3 |
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Drives: 2012 Victory Red LFX Join Date: Dec 2012
Location: west central Texas
Posts: 1,310
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Yep, multiple misfires. I'd pull all the plugs to get a feel for whats going on.
Here is some more quick stuff to look for. Vac leak, faulty O2 sensor, faulty/clogged injectors, or clogged cats.
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2018 SS wheels, red Heritage grille, actual driving lights, ZL1 strut tower brace, GM Performance billet aluminum fuel door, front grille Bowtie delete, painted red rotors and calipers, 1/4 window American Flags, splash guards, AEM dry panel air filter.
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10-27-2021, 10:27 PM
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#4 |
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Drives: 2010 2ss camaro Join Date: Oct 2021
Location: Fallbrook, CA
Posts: 6
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Ok so replaced injector and it popped a p0205 code today again and its sputtering in the low ram range on take off
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11-07-2021, 12:42 PM
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#5 |
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Drives: 2010 2ss camaro Join Date: Oct 2021
Location: Fallbrook, CA
Posts: 6
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Update turns out it was the wiring harness where it bolts onto the engine the loom wore out and wires were rubbing. Fixed. In case this helps anyone else
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11-07-2021, 01:11 PM
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#6 |
      
Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016
Location: Spring Hill, FL
Posts: 4,574
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If you are talking about the one on the front of the passenger head, then yes...I knew this was a failure point. To be proactivate I rewrapped mine in electrical and heat reflective tape and rerouted it through the bracket and also clocked the bracket a bit to minimize chafing. GM used a sharp metal bracket that has no sort of insulation at all, so chafing will happen sooner or later.
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2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI
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