Dakotalee24
New member
So I searched on the forum alot for this issue and none of the fixes that I have seen seem to help my car. So here is what my car is doing. When I first start it up and it's below freezing I will get a slightly rough idle. Normally goes away in 3-5 min. When I take a long trip out of town and the turn the car off to fill up and then turn the car back on I get a extremely rough idle. The check engine light will randomly turn off for a couple days sometimes then come back. I always put 93 octane gas in the car and take very good care of it. I have checked for cracks in the hose that goes to the air box and I don't see any apparent cracks. I also replaced my MAF sensor but that didn't help either. My chevy dealership is really incompetent and I don't trust them with anything to do with my car. The last time they had it they were suppose to do a recall thing and left a bunch of stuff unplugged under my hood. I have seen on YouTube that it might be a problem with that little gasget I think it's called the vacuum regulator diafram but some people call it the pvc valve on the upper right top part of my engine. Any help would be appreciated. Also this is a 2013 sonic Ltz 1.4L turbo with no aftermarket stuff.
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