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12-05-2019, 09:30 PM
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#1 |
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Car Lover By Nature
Drives: 2016 Hyper Blue Metallic SS Join Date: Dec 2009
Location: Central FL
Posts: 2,327
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Just bought a 2012 SS that has a weird idle surge. Please help...
I just bought a 2012 SS with an L99 with only 19K miles on the odometer. Apparently the car was sitting for a long time. First thing I did was change the oil with some good ole Mobil 1. We also checked the rear diff fluid as well and it was pretty bad. So, we changed that fluid as well. However, the car seems to have a slight idle problem. It sometimes has a slight surging condition that goes up and down. It doesn't do it always, just sometimes. So I'm wondering what can or could I do or replace so the engine idles normally?
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12-06-2019, 07:54 AM
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#2 |
 
Drives: 2SS RS ABM A6 Join Date: Jun 2010
Location: Pahrump, NV
Posts: 273
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There are too many factors -- you'd really need to record your idle with HP Tuners (etc.) and post the log.
It could be anything related to fuel, air, spark, bad tune... As for the diff fluid, even when it's fresh from GM, it stinks to high heaven. I doubt it needed to be changed, but it's better that you changed it just to be sure.
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Jack Bilger
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12-06-2019, 08:57 AM
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#3 |
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Account Suspended
Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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Is the car stock or modded? Usually when we get an erratic idle we usually look for air leaks. Check the intake and vacuum lines to make sure you don't have any open or loose connections.
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12-06-2019, 09:49 AM
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#4 |
        
Drives: 2010 SS 2SS M6 Join Date: Aug 2016
Location: Smithsburg, Md.
Posts: 2,445
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clean the maf and tb....
Good luck! PEACE
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2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - 150K! - All work by me...
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12-06-2019, 04:30 PM
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#5 | ||
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Car Lover By Nature
Drives: 2016 Hyper Blue Metallic SS Join Date: Dec 2009
Location: Central FL
Posts: 2,327
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Quote:
Quote:
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12-06-2019, 04:58 PM
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#6 |
Drives: 2014 Camaro SS/RS 1LE 1967 Camaro Join Date: Oct 2013
Location: Fort Wayne, IN
Posts: 874
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They make an actual MAF cleaner. I don’t think brake clean is a good option. Could be wrong , hopefully someone with experience will chime in.
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12-06-2019, 08:47 PM
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#7 |
 
Drives: 2013 ZL1 A6 Camaro Join Date: Jun 2013
Location: Florida
Posts: 171
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Autozone or NAPA sell throttle body cleaner and MAF cleaner.
My car sat for a while before I bought it. I wasnt sure what kind of gas was in it, so I ran a 3-4 of tank fuels of 93 octane with injector cleaner and seafoam in it, to clean out the fuel delivery system. It could be some light misfires from the injector being a little clogged. If you didnt say the car sat for a while, Id look for a dry rotted hose creating an air leak.
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2013 ZL1 Camaro A6. ARH Headers, K&N intake, Tuned by Tampa Tuning
2014 V6 Camaro bolt ons and E85 Tuned by Tampa Tuning |
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12-06-2019, 10:12 PM
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#8 | |
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Car Lover By Nature
Drives: 2016 Hyper Blue Metallic SS Join Date: Dec 2009
Location: Central FL
Posts: 2,327
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Quote:
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01-06-2020, 08:31 AM
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#9 |
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LSx FTW!!!
Drives: 2010 Camaro 2SS RS Join Date: Jan 2017
Location: TN
Posts: 767
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Might be old gas.
Run it out with some sea foam, then change fuel filter and put fresh gas in.
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2010 2SS RS A6 781rwhp on E85
Stage 2 ProCharger D1X Circle D 3400 Triple Disc Kooks Jet Hot Headers Kooks Full 3in exhaust Trick Flow GenX 255's Polished PAC .660's & Ti-retainers TSP VVT 3.2 cam kit w/DoD Delete Smith Bro's Trunnion kit AEM X-Series OBDII Widebands FIC ID1300x Injectors GM ZL1 High Output Fuel Pump DSX Tuning Flex Sensor DSX Auxiliary Fuel System Tim King Stage 4 Max Effort CTSV 6L90 DSS 1 piece aluminum driveshaft JRE 6L80E / 6L90E Dipstick NGK Iridium IX spark plugs #7 heat range Mighty Mouse Camaro 5 Wild w/-12an and Billet Black HP Tuners VCM Suite |
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