jklncep Posted July 14, 2009 Share Posted July 14, 2009 I HAVE A 92 ES 300 AND RECENTLY THE CHECK ENGINE LIGHT CAME ON I GOT THE CODE AND IT WAS 25 WHICH IS AIR FUEL RATION LEAN I DONT KNOW HOW TO GO ABOUT FIXING THIS BUT IF YOU ALL CAN PLEASE GIVE ME SOME INSIGHT ON HOW TO FIX IT THANK YOU Quote Link to comment Share on other sites More sharing options...
George_Jetson Posted July 15, 2009 Share Posted July 15, 2009 What is the mileage? Have you had ANY other problems with the engine in the last couple months? And do the 02 sensors appear to be original? If there is nothing unusual in the cars history, and the mileage is significantly above 100k miles. I would first recomend checking all the vac hoses for splits or holes. Correct any problems found, and if there is no bad hoses. I would recomend replacing both )2 sensors. The sensor has a finite life span and will wear out with time. Quote Link to comment Share on other sites More sharing options...
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