Engine management light comes back on
Hi, I have a wk 5.7 Hemi. 2006. Long story but ecu was fried and we had to replace. Jeep programmed the ecu (second hand) with the skim code and wet hey the car came alive.
When the ecu died no 8 coil pack did too. That was changed for a brand new one before the ecu was changed and over written. Now the problem is the engine management light is on. Code p2323 coil Pack 8 it says but we know it is fine and the jeep drives fine. It's is definitely running on all 8 cylinders.
So is it that the ecu will learn after a number of starts that 8 coil is ok? Jeep intimated 8 starts of 8 miles a time. Tried to clear via obd initially it clears but as soon as turn the key engine light comes on again.
Any help would be much appreciated .