erikbauer86
Lexus SC engine stalling
Summary of the thread
A 2004 Lexus SC owner experienced engine stalling and a persistent check engine light, suspecting a fuel tank ventilation system leak, possibly due to a defective activated charcoal filter. Another person suggested that a faulty purge valve could also cause these symptoms, especially if accompanied by a hissing sound near the fuel tank. The owner later confirmed that a workshop identified the activated charcoal filter as the issue, and it was repaired, resolving the problem.
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4 comment(s)
erikbauer86 (community.author)
Thanks for the input. I haven't really noticed a drop in fuel efficiency, but now that you mention it, I think I might have heard a faint hissing sound near the rear wheel well recently. Could a faulty purge valve really cause the engine to stall?
michaelheld82
Yes, absolutely. A faulty purge valve or a leak in the ventilation system can disrupt the air flow to the engine, causing it to stall, especially at idle. Given the hissing sound, it's highly probable that the system is failing. I'd advise getting it checked by a professional mechanic.
erikbauer86 (community.author)
Appreciate the advice. I took it to a trusted workshop and they confirmed it was indeed the activated charcoal filter in the fuel tank ventilation system. The repair cost me 275€. Hopefully this solves the issue. Thanks again!
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LEXUS
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SC
michaelheld82
I had a similar issue with my SC. The check engine light and stalling are classic symptoms. Have you noticed any decrease in fuel efficiency or any hissing sounds coming from the fuel tank area? It could be related to the purge valve.