Lexus IS Forum - View Single Post - Oxygen Sensors - FAQ
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post #86 of (permalink) Old 10-20-2009, 02:08 PM
Spedmen
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Quote:
Originally Posted by mtxis View Post
O2's the last thing you wanna check. search for vacuum leaks, clean and inspect the MAF sensor, test the fuel pressure. do some searching on the site based on the code. there are more detailed scenarios mentioned that might help you narrow down your problem.
now im really concerned, CEL went off, not the first time, but is yet to come back,3 start ups and 100 miles later. I doubt the problem could have fixed itself. What should I do now
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