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Re: rich codes 03 mustang 4.6 dohc PO172
Posted to Technical Discussion Forum on 11/29/2005 1 Reply

Need more information: fuel trims (ST and LT) at idle, in closed loop and stabilized

trims at 2500, stabilized

02 sensors, upstream and downstream at both rpms

Any other driveability complaints or MIL only with no complaint.

Mileage on vehicle? TSB sea... Login to read more.

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