2006 ex pcm lost i/m monitors

[Jisumo]

Did timing chains on 2006 ex 4.0l i lost my i/m monitors in my pcm ,now current driv cycle they all say NA so then they will never test ,is this normal or do i need a new pcm

 

[Rcflyer330]

Some i/m monitors will always show NA. The one that do run you have to go through a drive cycle to get them to run. If after driving the car they all say NA then try clearing all the codes with a scan tool to reset the i/m monitors and try again.

Here is a detailed ford drive cycle procedure.

Ford Motor Company Driving Cycle