2009 is250 awd
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Driver School Candidate
Joined: Dec 2020
Posts: 2
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From: ON
2009 is250 awd
I have 2009 Lexus is250 awd it as 181000km. Sometimes it seem like it want to stall but is rare, very rare. Usually happens just before i come to full stop at the traffic light. The rpm goes up and down and engine shake a little, and it returns to normal quick. Even driving after it happens seem fine. I have obd scanner but nothing ever comes up. No code that i can see. I did change spark plugs and 2 coils that seemed bad. It happened once more after that. Car pulls fine, goes smooth. I use shell 91 octane. Any idea? Idle sensor? Carbon build up?
George
George
Lead Lap
Joined: Apr 2016
Posts: 512
Likes: 169
From: Alberta
Check the battery terminal cables. Make sure there is no corrosion also check the connectors to the alternator. A loose ground or bad alternator can cause similar symptoms. You should be able to have the alternator output tested easily enough.
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