Have code 400, insufficent EGR flow. 1)changed EGR valve 2) changed back pressure flow controller 3)cleaned EGR passages with solvent and compressed air. Continue to get check engine light about every week with this same code.
Have code 400, insufficent EGR flow. 1)changed EGR valve 2) changed back pressure flow controller 3)cleaned EGR passages with solvent and compressed air. Continue to get check engine light about every week with this same code.
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