The most common problems with idling in a 2013 Chevy Sonic are usually caused by a vacuum leak, a problem with fuel delivery, or a problem with Your spark plugs. If Your engine is idling rough and You have a check engine light on at the dash You should use an OBD II scan tool to read the code because that can give You more information. Usually if You have a vacuum leak in Your engine it will not get the right amount of pressure and it will idle very rough. The same goes for fuel delivery. If there is not enough fuel pressure or too much fuel pressure Your engine will run lean or rich and that can cause idling problems as well.
Evelyn S.
April 10, 2020
If your chevrolet sonic has a rough idle for a range of reasons, the most common 3 are a vacuum leak, a problem with the spark plugs or a problem with the ignition coil.
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