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karl_blitz40

Skoda Superb Diesel engine stalls at idle

My 2007 Skoda Superb diesel is giving me grief! The check engine light is on, and the engine stalls at idle. I scanned for errors, and it seems to point towards an incorrect fuel composition. Could wrong fuel be the culprit? I'm quite worried about the fuel economy now, too!

Summary of the thread

A 2007 Skoda Superb diesel was experiencing engine stalling at idle and a check engine light, with a diagnostic scan indicating incorrect fuel composition. Possible causes discussed included wrong fuel, a faulty sensor in the fuel system, or a bad fuel pump relay. The issue was ultimately traced to a defective cable connection, which was repaired by a mechanic, resolving the problem and clearing the check engine light.

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4 comment(s)

davidfrank1

I had a similar issue with my Superb, though I can't recall the exact error code. It sounds like your fuel mixture is off, which could be caused by a faulty sensor in the fuel system. Have you checked the fuel quality recently? Sometimes, bad fuel can throw everything off. A bad fuel pump relay can also cause similar issues, cutting fuel at idle.

karl_blitz40 (community.author)

Thanks for the quick reply! You mentioned a sensor in the fuel system. Do you recall which sensor it was? Also, how did you check the fuel quality? I filled up at my usual gas station, but you never know…

davidfrank1

I don't remember the exact sensor, to be honest. It was a while ago. Regarding the fuel quality, I didn't check it myself. The workshop guys did some tests. Considering the symptoms and error code, I'd recommend taking it to a workshop. They can run proper diagnostics and pinpoint the issue more accurately. Could be a dodgy connection somewhere.

karl_blitz40 (community.author)

I took my Superb to a trusted mechanic, and they found a defective cable connection as the culprit. The error memory pointed them in the right direction. 95€ later, the engine runs smoothly, and the check engine light is gone! Thanks for your help and advice!

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SKODA

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SUPERB