Not sure why you swapped out the throttle body usually a new position sensor and
cleaning will solve problem if it was actually the initial cause. Anyway with a new throttle
body the terminals on the battery are disconnected and the positive lead gets grounded to
clear the memory in the ECU. After that the reconnect battery terminals and let the vehicle
idle for ten minutes to adjust to base idle. Then go for a normal drive to have vehicle go
through all the shift points. If the CEL comes back you will have to read the codes again
possibly with a vehicle specific scan tool such as IDS for Ford. Hopefully the above
method solves your issue. Good Luck!
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