![]() 12/03/2015 at 11:57 • Filed to: None | ![]() | ![]() |
!!!error: Indecipherable SUB-paragraph formatting!!! I finally took my car to the dealership yesterday after having to wait 2 weeks for my appointment to finally come and here’s what they found: Carbon build up on my throttle body, a badly torn air duct (which I have no idea how the hell that happened) and a really dirty air filter. Of course none of it was covered by my warranty because that seems to always happen when you take your car in for service. They said that’s whats causing the service engine light, the weird transmission shifts and could be the reason for the not so stellar fuel econ. I’m just glad it was nothing serious.
![]() 12/03/2015 at 12:06 |
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a badly torn air duct
Seems like that could of been serious....along with the carbon build up thing.....
![]() 12/03/2015 at 12:10 |
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Agreed. Especially if it’s unmetered air.
![]() 12/03/2015 at 12:10 |
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How many miles are on it?
![]() 12/03/2015 at 12:11 |
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it may have created a Sonic boom!
![]() 12/03/2015 at 12:13 |
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![]() 12/03/2015 at 12:15 |
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Its serious, but not as serious as you know needing a new trans or something like that.
![]() 12/03/2015 at 12:15 |
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73,600. Why do you ask?
![]() 12/03/2015 at 12:16 |
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Don’t those have electronic throttles? Most of the time they’ll compensate for a little bit of build-up, but that would definitely explain the rough idle if it got too much in there. That still shouldn't happen on a modern engine, so keep an eye on it - there may be a problem with the EGR system dumping too much exhaust back into the intake.
![]() 12/03/2015 at 12:22 |
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True
![]() 12/03/2015 at 12:23 |
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I’m not sure about the electronic throttle. But I’ll definently mention what you said to them when I take it back. Thanks.
![]() 12/03/2015 at 12:41 |
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![]() 12/03/2015 at 13:27 |
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Do you drive through a lot of coal mines?
![]() 12/03/2015 at 13:40 |
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That seems low to be having carbon issues
![]() 12/03/2015 at 14:23 |
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carbon build up on those is common.
![]() 12/03/2015 at 14:25 |
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no it isn’t sadly.
as a GM dealer employee , we’ve had quite a few do it.
pull out spark plugs , spray in upper engine cleaner (2 cans) , allow it to soak overnight , then re install plugs generally good to go.
![]() 12/03/2015 at 14:43 |
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I drive though nothing.
![]() 12/03/2015 at 14:45 |
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That was my thinking. Which lead me to think either this is a common issue for Sonic’s or this build up had either already started when I bought the car or built up quickly since I’ve had it.
![]() 12/03/2015 at 14:46 |
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Quite a few Sonic’s do it? Or GM vehicles in general? Because I asked the service adviser yesterday does she see a lot of Sonic’s come through with the same type of problems and she said not really.
![]() 12/03/2015 at 14:53 |
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well in our market they’re called Holden Barina , but yes have had a few.
![]() 12/03/2015 at 15:37 |
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Well there’s your problem. The main ingredient of nothing is carbon. Just ask Stephen Hawking. Or his voice machine.