Seat Altea uneven running issue

I am extremely frustrated! My Seat Altea, 2013 gasoline engine, is running terribly unevenly! The check engine light is on, and the error memory has a stored error. It's jerking noticeably when I accelerate. Could this be a fuel pump issue or maybe the crankshaft sensor? I suspect an exhaust leak.

4 comment(s)

Hey, I also drive an Altea and I had a similar issue not too long ago. The jerking and the check engine light sound familiar. Did you check the basics like the air filter and spark plugs? I'd also suggest looking into the ignition coil. Sometimes a faulty one can cause misfires that lead to uneven running.

Interesting. You mentioned ignition coil. How did you diagnose that as the potential cause?

Well, in my case, the error code pointed towards a misfire on one of the cylinders. After swapping the ignition coil with another one, the misfire moved to a different cylinder, so it was pretty clear. But if you suspect an exhaust leak, I'd definitely get that checked first. It's a common problem and can cause all sorts of issues. Probably best to get it on a lift at a workshop.

Many thanks for your help. I took it to the workshop and you were spot on! It was indeed a leak in the exhaust system. Repair cost me 265€.

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