MarWa87
Lexus IS Cold Start Issue
Summary of the thread
A 2005 Lexus IS with low mileage is experiencing a cold start issue, where the engine runs poorly and is difficult to start. The suspected cause is a faulty cold start injector, potentially linked to problems with the fuel rail or injection system. After consulting with others and visiting a professional, it was confirmed that the cold start injector was defective, and replacing it resolved the issue.
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4 comment(s)
MarWa87 (community.author)
Thanks for the quick response! No, there aren't any error codes showing up on the diagnostics tool. Could a partially defective injector cause these cold start problems without triggering a code?
henrytaylor1
Hmm, tricky one without codes. Yeah, a partially blocked or failing injector could definitely cause poor cold starts and rough running. Time to get it checked by a pro methinks!
MarWa87 (community.author)
Thanks! I appreciate the help. I took it to the shop, and they confirmed it was a defective cold start injector. Repair cost me 515€, but the car runs perfectly now!
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LEXUS
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IS
henrytaylor1
Woah, sounds nasty! Could be a clogged injector messing with the fuel mix. Is it throwing any codes?