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PMeyer
Loss of engine power
Black smoke from exhaust on acceleration
Poor fuel economy
Unsteady engine
Check engine light on
Jerking on acceleration
(Translated from German)
4 comment(s)
Hey, thanks for your quick reply. My Golf already has 112345 kilometers on the clock. Last service was only a month ago. At first I thought it was the engine oil, but that was changed. Hopefully it's not the control unit, that's quite a cost factor. But well, if there's no other way... Your experience definitely helps me, thank you very much!
(Translated from German)
Hey, you're welcome! Yes, the control unit really is a costly affair. But remember, it could also have something to do with the injection system or the air flow meter. With your mileage, I would definitely have the spark plugs and ignition coils checked. And perhaps a look at the lambda sensor, as you suspected, wouldn't be wrong. Of course, I'm not a car mechanic, but these are just suggestions as to what it could be. I would recommend that you have a professional diagnostic test carried out in a workshop. You can usually get a fairly accurate fault diagnosis there. Good luck with that, hopefully the problem can be solved soon!
(Translated from German)
Hi, thanks for your detailed suggestions. I hadn't actually thought about the spark plugs or ignition coils. The injection system and the air flow meter also seem to be plausible points that I should consider. Yes, I was going to have the lambda sensor checked anyway. I think the next step is, as you said, to have a professional diagnostic test done at the garage. I'm hoping the solution will be less costly than a new ECU.Thanks again for your help, you've definitely brought up some valuable points I should have thought of!
(Translated from German)
Hi, I had a similar problem with my 2009 VW Jetta. As far as I know, these symptoms could indicate a faulty engine control unit. I don't have much car knowledge, but that's exactly what it was with my Jetta. They replaced the control unit in the workshop and it cost 1000 euros - not cheap fun, but it's been running well ever since. But to really be able to help you, it would be helpful if you could provide more information about your car. How many kilometers has it done? Has it been serviced regularly? What model and engine version is it exactly? Hope that helps you for now.
(Translated from German)