Q: Q: Check Engine Light

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I have a check engine light on and scanned it myself. It turned out the fuel was too lean in bank 1. In addition every time I fuel up where it's more than half a tank the light goes away but when it has less than half it comes on again. I also have another question, My truck still shakes starting while acceleration at 50 mph and goes away at 60 mph. I asked earlier abouand did what I was told but the problem is still there.

My car has 170300 miles.
My car has an automatic transmission.

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