Ranger Mods

This is probably a silly question but hopefully I can still get an answer.....

If you put a tune through your auto gearbox, does that over write the factory programming in the TCM? Or does it just improve what is already there?

The reason I ask is that I hopefully will be getting a new TCM installed this week or next week at the latest but was wondering if I just tune the current TCM if that would fix my issues?
I hope my question makes sense....
Thanks in advance.

69Moonshyne wrote: ↑Mon Aug 12, 2019 6:02 pm This is probably a silly question but hopefully I can still get an answer.....

If you put a tune through your auto gearbox, does that over write the factory programming in the TCM? Or does it just improve what is already there?

The reason I ask is that I hopefully will be getting a new TCM installed this week or next week at the latest but was wondering if I just tune the current TCM if that would fix my issues?
I hope my question makes sense....
Thanks in advance.

If you are talking about a tune you upload from an Ngauge or similar then yes, that will delete the current tune and reflash it with your chosen tune.

Having no idea what trans issues you are having it is impossible to say if a tune will fix them.

Just wait. It will not be a calibration file issue as this is why they are replacing the whole module. If it was a file issue then every vehicle in your model would have the same issue as yourself.

It may be a faulty TCM but it could also be the other end which is inside the transmission.

A tune file is just a modified version of the factory file, but in this case it is only a portion of it and is why we do not need to run specific procedures to re link the TCM back to the vehicle.

Thanks Stewart, appreciate the quick response.