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noahkaiser6

Lexus LFA Rough Idle and Stalling

My 2011 Lexus LFA with a gasoline engine has 129522 km. Lately, the engine's been running rough, sometimes stalling at idle, and the check engine light keeps popping up. When I accelerate, it feels like the car is jerking. I've checked the air filter, seems fine. Any ideas?

4 comment(s)

johannesthunder1

Sounds frustrating! I had a similar issue with my old BMW a while back: rough running, check engine light. Does it feel like a misfire? For me, it turned out to be a faulty ignition coil. Have you checked those?

noahkaiser6 (Author)

Ignition coil, huh? I haven't looked at those specifically. Is it difficult to check them, and what exactly should I be looking for?

johannesthunder1

Well, in my case with the BMW, the mechanic found that the cable to one of the coils was loose. Apparently, that's a common issue, causing a misfire. The symptoms were almost identical to yours. I would recommend getting it checked out at the workshop. I ended up paying 80€ for the new ignition coil and 15€ for the labour. It could be a similar problem.

noahkaiser6 (Author)

Thanks for the insight! I took your advice and brought it to a trusted mechanic. You were spot on – turned out to be a defective ignition coil, just like you said! The cable connection was faulty. The final bill was 95€, and now she's running smooth again. Really appreciate the help!

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