jadecuir Posted February 24, 2005 Share Posted February 24, 2005 The engine light stayed on the other day. I pulled the efi fuse to reset the light. No light for three days. It came back on today. Checked the code, get #25, "Air-fuel ratio lean malfunction". Anyone know what would cause this? Car runs great! No idle problems at all. Is one of my Ox sensors failing? Quote Link to comment Share on other sites More sharing options...
silvermate Posted February 24, 2005 Share Posted February 24, 2005 could be your O2 sensor. Quote Link to comment Share on other sites More sharing options...
jadecuir Posted February 24, 2005 Author Share Posted February 24, 2005 could be your O2 sensor. ← That's what I suspect. Is it accessible from under the hood, or am I jacking the car up to get to it? Quote Link to comment Share on other sites More sharing options...
silvermate Posted February 24, 2005 Share Posted February 24, 2005 they are back by the cats Quote Link to comment Share on other sites More sharing options...
99lsguy Posted February 24, 2005 Share Posted February 24, 2005 yeah, there are L & R sensors before you get to the Cats........put you car up on ramps and you can get to them........ Run a search on this........a lot of info out there... Quote Link to comment Share on other sites More sharing options...
zigenfiver Posted February 25, 2005 Share Posted February 25, 2005 Check out Lexls's website for 02 sensors. www.lexls.com Quote Link to comment Share on other sites More sharing options...
jadecuir Posted February 25, 2005 Author Share Posted February 25, 2005 Check out Lexls's website for 02 sensors. www.lexls.com ← Thanks, I'll do dat. Quote Link to comment Share on other sites More sharing options...
Lexls Posted February 26, 2005 Share Posted February 26, 2005 Yeah, #25 is usually a bad O2 sensor...but it could be a few other things. First, test the voltage on your main O2 sensors...the procedure is on my site ;) The O2 sensors don't last forever, you do need to replace them once in a while. My bet is that one or both of your main O2 sensors have gone out of spec. Quote Link to comment Share on other sites More sharing options...
jadecuir Posted February 26, 2005 Author Share Posted February 26, 2005 Yeah, #25 is usually a bad O2 sensor...but it could be a few other things. First, test the voltage on your main O2 sensors...the procedure is on my site ;) The O2 sensors don't last forever, you do need to replace them once in a while. My bet is that one or both of your main O2 sensors have gone out of spec. ← Thanks for all your tutorials! They are the greatest!John Quote Link to comment Share on other sites More sharing options...
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