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11-22-2019, 07:51 AM
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#1 |
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Possible electrical issue
At a cold start while the engine is idling my MPH will begin to jump or surge from 0 to almost 20 mph... also the doors will lock. My car has never auto locked before no matter how long I leave the car running. Any idea as to what is wrong and or what I should check? Never had to deal with an issue like this before and not sure where to start.
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11-22-2019, 09:03 AM
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#2 |
         
Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010
Location: Clermont, IN
Posts: 3,297
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A lot of times electrical gremlins are a sign of a failing battery.
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2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419.
Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!! |
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11-22-2019, 09:28 AM
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#3 |
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Ret AF, cancer survivor
Drives: 2013 Camaro 2SS/RS & 2006 Corvette Join Date: Jul 2015
Location: Mesquite, NV
Posts: 2,741
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If you are idling with the car in park and the gauge is jumping from 0 to 20 MPH and the doors are auto locking, you definitely have an electrical gremlin somewhere. The first thing I would do and hope it is, is have the battery checked. If it's not the battery, electrical issues like what you describe can be difficult to track down.
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11-22-2019, 10:07 AM
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#4 |
 
Drives: 2014 2SS RS, 6 sp man Join Date: Feb 2016
Location: Marlton, NJ
Posts: 461
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The door is probably locking cause its sensing 20 mph forward movement.
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11-22-2019, 10:26 AM
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#5 | |
 
Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016
Location: Spring Hill, FL
Posts: 4,575
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Quote:
I have had electrical issues in this car that automatically locked and unlocked the doors. But is also affected other systems related to the doors, like windows not working intermittently, and loss of door speakers and mirror control. This was all due to a damaged ground. Your issue does not seem like mine. Any other issues or strange occurrences? Stabilitrak errors or codes thrown? I would think any speeds sensors misreporting would also trigger other errors. Also, as said above, do not discount the possibility of battery issues. These cars can act possessed when the battery starts to go.
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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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11-22-2019, 10:31 AM
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#6 |
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Account Suspended
Drives: 2013 Sparkly Red One Join Date: Dec 2018
Location: Hospitality State
Posts: 2,558
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I'm starting to have issues with my car as well. While driving down the freeway at 75-80 mph, the speedo will indicate 3 mph. While at a stop, the idle will stay up at 1100-1200 rpm. I'm going to have the battery checked, it is original and over 7 years old.
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11-22-2019, 10:36 AM
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#7 |
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Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016
Location: Spring Hill, FL
Posts: 4,575
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After doing some research it seems only the manuals have a dedicated externally accessible speed sensor at the rear of the transmission. The automatics have speed measured via the TCM.
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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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11-22-2019, 01:39 PM
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#8 |
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Drives: 2012 Victory Red LFX Join Date: Dec 2012
Location: west central Texas
Posts: 1,310
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I would replace the battery if original immediately.
Me a couple months back... Low miles car sitting in my shop. Went to start it after 3 weeks, click-click. Then demonic possession took hold. Windows, wipers and radio going up-down on-off randomly. Worst was the key locked into the ignition which would would have really ticked me off if i'd of been in a parking lot somewhere with no way to secure my baby. Just FYI.
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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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