My camry just recently started running really rough anytime it idles or is going slow. The issue goes away once I get it driving fast enough. But if I’m going slow or idling it sounds like a diesel. The check engine light came on too. We tried replacing the spark plugs but that didn’t do anything. It also feels a lot less snappy, and takes longer to speed up. Any ideas? Could it be the ignition coil?
It could be, but the check engine light is trying to give you the system with the fault. Get the code(s) read and find out.