python Posted May 18, 2008 Share Posted May 18, 2008 i have code 25 on the cel and when i unplug the efi fuse for 10-30 minutes(i have done it 3 times now) the cel is right back on,its on instantly, no hesitation......any ideas guys? Quote Link to comment Share on other sites More sharing options...
93ls400walt Posted May 19, 2008 Share Posted May 19, 2008 Look on www.troublecodes.net code 25 is for lean air fuel ratio. Maybe O2 sensors? Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted May 19, 2008 Share Posted May 19, 2008 Besides the usual o2 sensors causing a lean out condition, a faulty coolant temp sensor could be playing with the efi. Bad ecu could be another reason. Are you down on power? Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted May 19, 2008 Share Posted May 19, 2008 I reread your post. If you've got no hesitiation or loss of power, I'm wondering if a dirty or loose terminal on your main efi relay could be triggering the cel? Quote Link to comment Share on other sites More sharing options...
python Posted May 19, 2008 Author Share Posted May 19, 2008 i disconnected the battery and the light went out, the thing is, i had a slight misfire, it was occasional, i did a tuneup with all dealer parts, still had a misfire so i took it to a shop and they said injector misfire, when i put injector cleaner in it it went away,so....i bought some injectoer (rebuilt) and had em put in, it ran fine for about 500 miles, then i decided to take the car up to 100 mph to give it a test and it started misfiring again...since the light would not go out after disconnecting the efi fuse i thought something was wrong with the ecu....i guess i was wrong, maybe i have a faulty injector, should have bought new ones from the dealer but they are too expensive, o and btw when i put injector cleaner in it runs fine, no misfire at idle Quote Link to comment Share on other sites More sharing options...
eatingupblacktop Posted May 19, 2008 Share Posted May 19, 2008 Ask your shop to check the spray pattern of your injectors. Sometimes you can clean them up and they'll be fine. Other times you'll have to replace. Make sure to test the cold start injector as well. Quote Link to comment Share on other sites More sharing options...
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