Shifting ES300 Problems - ClubLexus - Lexus Forum Discussion

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Shifting ES300 Problems

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Old 09-26-12, 07:41 AM
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zkesterson
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Default Shifting ES300 Problems

Hello,
I have a 2000 ES300 Platinum Edition. It is in incredible shape. It runs great. But, my CEL/TracOff lights are on a lot. The code was P0171. I have had them thoroughly checked and no one can find anything wrong. The car runs great but every once in a while when I am on the interstate the RPMs are high and it doesn't shift. It is usually when I first drive the car in the morning. Any suggestions? Thank you in advance
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Old 09-26-12, 08:36 AM
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hzt30
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Have you checked your transmission fluid or serviced the transmission? Do you mean it doesn't shift into overdrive? The transmission does not shift into overdrive when engine is cold.The O/D is temperature sensitive and will not engage until the computer sees the proper coolant temp input. This could be caused by a bad coolant temperature sensor.

P0171 is a lean condition on bank 1 which could be a vacuum leak or bad O2 sensor.
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Old 09-26-12, 11:13 AM
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Thank you very much hzt30!! I may just take it to the dealer and have them check it out. I think it will be worth the $50 in the long run
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Old 09-26-12, 03:26 PM
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It sounds like a knock sensor to me.
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