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2004 Ford Expedition it is osculating while idling

2004 Ford Expedition it is osculating while idling

This topic has 1 reply, 2 voices, and was last updated 2 years, 6 months ago by Richard Kirshy.

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September 25, 2021 at 5:35 pm #992464
Joy Mayberry
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The air intake, throttle body and idle air intake has been cleaned. Put it on the code reader (due to no change in the idling) nothing comes up on the reader. Can someone please help me fond out what is wrong? Thank you
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October 1, 2021 at 12:16 pm #992514
Richard Kirshy
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You say ” osculating while idling ” I take you mean it’s shaking.
My first thought is attach a scan tool and look at live data and see if any reading are off where they should normally be.
I’m thinking first look at the fuel trims, both STFT and LTFT and see if they look good.
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