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Originally Posted by Weeee!
In my case i have no CEL, but the same experience otherwise. Rough idle at cold start. Also been noticing an odd vibration at very low speeds, like 5 mph/8km. It takes about 2 mins before the roughness stops at startup. Any thoughts appreciated.
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How many miles and have you done the spark plugs yet? The engine uses a little more fuel during warmup, so it’s possible that your plugs are fouled and causing misfires or an incomplete burn during that time. Just a random guess though, if the car runs great otherwise it’s hard to say. You could pull a plug and take a look at it to see what’s going on.
If you do try fuel injector cleaner I’ve been hearing great things about this company and their line of products. My car runs great but I’m close to 85k miles, so I may run some of their products at my next oil change.
https://www.hotshotsecret.com/gasoline-extreme-12-oz/