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Fuel trim

  

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Hello scotty I don't missed any of your videos keep on going you are the best I have learned a lot from your videos. I am writing to you because I have corolla 2010 manual transmission with 87,000 and when the engine is running at idle with nothing on like the radio, lights a/c etc it idles erratically, my mechanic was checking the live data since it doesn't have any code and the fuel trim is 2.0 on the short  and -14 on the long side my mechanic already change the Air filter the spark plugs, he also clean the throttle body and maf sensor but is not getting better. I would appreciate any advise thanks. 


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Clean the injectors. 


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