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willi_herrmann1

Avalon uneven running

My 2016 Toyota Avalon with a gasoline engine is running unevenly at only 37982 km. The check engine light is on, and an error is stored. I also experience jerking when accelerating. Could this be related to the ignition coil, oxygen sensor, fuel injectors, air filter or crankshaft sensor?

Summary of the thread

A 2016 Toyota Avalon is experiencing uneven running, a check engine light, and jerking during acceleration. Possible causes considered include issues with the ignition coil, oxygen sensor, fuel injectors, air filter, or crankshaft sensor. However, a suggestion to check for an exhaust leak led to the discovery of a leak, which was confirmed as the cause of the problem. Repairing the exhaust leak resolved the issue.

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4 comment(s)

friedhelmkoehler1

Uneven running, eh? I had a similar issue with my 2014 BMW 3 series. Check engine light, the works. Before you start replacing parts, have you considered checking for a leak in the exhaust system? It can cause all sorts of weird symptoms.

willi_herrmann1 (community.author)

An exhaust leak? Interesting. I hadn't considered that. What kind of symptoms did the leak cause on your BMW exactly?

friedhelmkoehler1

Yes, an exhaust leak. On my BMW, it caused a very similar rough running condition, the check engine light illuminated intermittently, and there was a noticeable loss of power, particularly during acceleration. Given your symptoms and the potential complexity of modern engine management systems, I would strongly recommend a diagnostic check at a reputable workshop before undertaking any repairs yourself. It may save you a lot of time and money in the long run.

willi_herrmann1 (community.author)

Thanks for the advice! It turned out to be a leak in the exhaust system, as you suggested. Cost me 265€ to repair. Appreciate your help!

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TOYOTA

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AVALON