Q: Have 300RX lexis 2001 it misfires ,slow accleration ,loss powder, I have had full tune-up with all sensor and plugs replaced.

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Have 300RX lexis 2001 it misfires ,slow accleration ,loss powder, I have had full tune-up with all sensors and plugs replaced. The car ran well for two weeks and reverted back to the old symptoms.

My car has 125 miles.
My car has an automatic transmission.

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