Engine light, traction control light, rough idle?

2010 CHEVROLET HHR
140,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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YANNICRISANTOS
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Been having issues with my car, "check engine light" turns on, cylinder one misfire, car kind of shaking at idle. also, traction control lights randomly turns on saying service ESC and service traction in a message. when the traction control lights turns on my car shifts hard going to second gear (automatic transmission).any help or suggestion will be helpful just need this car fix, ASAP.
Jan 28, 2017 at 10:52 AM
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SATURNTECH9
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If you have a constant misfire see if you have spark on cylinder one if not bad coil pack. For the traction control light you will have to have it scanned for codes with a professional scan tool. Write down the exact code numbers not code descriptions. Let me know what they are.
Jan 28, 2017 at 9:56 PM
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YANNICRISANTOS
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The code is P0301 I switch my ignition coil around and deleted code and after a few minutes came back up, and now that I remember it started doing that right after I once pump flex fuel on my car.
Jan 30, 2017 at 4:42 PM
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SATURNTECH9
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Sounds like the fuel you got but that would cause miss fires on all the cylinders.
Jan 31, 2017 at 7:33 AM
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SATURNTECH9
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This guide can help

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please run down this guide and report back.
Jan 31, 2017 at 7:40 AM
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YANNICRISANTOS
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When I switched the coils around, the mis fire still on cylinder 1 and now that you mention it, I did get a random mire fire as well when it started with cylinder 1 but that went away after a week and forgot about it
Jan 31, 2017 at 4:47 PM
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SATURNTECH9
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So is it a constant Miss fire?
Jan 31, 2017 at 8:44 PM
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YANNICRISANTOS
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I'ts been a constant mis fire on cylinder 1 the weird thing is that, when it's really cold outside it doesn't misfire the only thing I've noticed
Feb 1, 2017 at 7:27 PM
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SATURNTECH9
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Have you checked for a vacuum leak yet?
Feb 1, 2017 at 10:03 PM
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YANNICRISANTOS
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I have't found one, where else should I look? or any took that can detect a leak
Feb 2, 2017 at 2:31 PM
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SATURNTECH9
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Inducing smoke in the Intake is the best way.
Feb 2, 2017 at 7:53 PM
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YANNICRISANTOS
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I did a compression test this morning and here are the results Cylinder 1 148 Cylinder 2 185 Cylinder 3 183 Cylinder 4 180
Feb 11, 2017 at 5:29 AM
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SATURNTECH9
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I don't like cylinder 1 compression and that one is the one setting the code.If you swapped the coil spark plug and fuel injector and your getting a injector pulse to that injector.Then the only thing left is the compression/mechical issue.
Feb 11, 2017 at 7:45 AM
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GREG BARNHILL
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It's the throttle body.
Jan 9, 2019 at 3:24 PM
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STRAILER
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Did you have this problem and the throttle body replacement fix it, or did you just clean it?
Jan 10, 2019 at 11:43 AM
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TROSS2009
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My Traction Control Light comes on and immediately the transmission starts shifting Hard, shortly after that, the check engine light comes on. We had the transmission checked by a trasmission shop, they found nothing wrong with the transmission. He said it could be some kind of sensor...If its the Traction Control sensor, can we just disable the system.
Feb 28, 2019 at 7:10 PM (Merged)
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MYFAIRLANE64
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There is an issue with some debris getting into the camshaft actuator solenoids. They have screens to protect but will occasionally get plugged. Frequent oil changes will help. Pull codes and find where to look.
Feb 28, 2019 at 7:10 PM (Merged)
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2CP-ARCHIVES
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my traction control light is on and transmission shifts hard. what can cause this and what is the fix for it
Feb 28, 2019 at 7:10 PM (Merged)
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SATURNTECH9
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Your going to have to get your codes read that's the starting point.You will probably not be able to get the traction codes with a diyer scan tool.Let me know the exact code numbers you have not code descriptions.
Feb 28, 2019 at 7:10 PM (Merged)