Lexus SC Rough Engine Idle

My 2010 Lexus SC with a gasoline engine is running rough at 103513 km. It starts poorly, stalls at idle, and the check engine light is on. I suspect the camshaft sensor. Anyone encountered this? I'm thinking the encoder wheel on the camshafts might be the issue.

4 comment(s)

Hey! I had something similar happen on my SC. Check engine light, stalling... pretty annoying. Did you happen to check the crankshaft sensor as well? Sometimes those two play together. I'd also take a peek at the wiring harness going to the camshaft sensor; those connectors can get brittle with age.

Thanks! I have not yet checked the crankshaft sensor, but I will. When you had the issue on your SC, were the symptoms intermittent at first, or were they consistently present? Trying to understand if this aligns with what you encountered.

Yep, intermittent at first, then it got worse pretty quick. If you suspect the camshaft encoder wheel, it's probably best left to a workshop to diagnose and fix properly. It can get tricky without the right tools and knowledge. I ended up paying around 700€ for a new sensor and the labor, so your 695€ estimate is probably spot on.

I appreciate the confirmation and advice. I will bring the car to a trusted workshop for inspection and repair. Based on your experience, I am now more confident in addressing the issue. Thank you!

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