mysticalillusion
CEG'er
- Joined
- Sep 1, 2002
- Messages
- 77
Looks like i will have to replace my PCM. So when I put the new one it can i just plug It in a re tune it or is there something else i have to do?
98 3.0 sct x3. I've read as long as i restore one to factory i will unlock the tuner.... to then have the ability to tune another.
New computer in took the tune. You do have to return the old to stock and it unlocks the tuner to be used again.
1. You had no ignition on two cylinders, and swapping the computer actually fixed the problem? I've seen lots of people blame stuff like that on a computer, but it usually ends up being something else. I have always thought that the computer either works 100%, or doesn't work at all. Knowing that swapping a computer can fix an ignition problem like that teaches me something I didn't realise was possible.
2. You were able to swap just the computer without changing the PATS box, and had no problem getting it running again?
As mentioned 98 and older cars have an external PATS ECM. Therefore changing out the cars ECM had no impact on the PATS system as the same key and PATS ECM were still used. This would have been a problem on the 99 and newer cars as the PATS ECM is internal to the main ECM on the car. In that instance the ignition tumbler and key would have been needed from the donor car.
Or you can do what i did and just swap the PATS chip from one key to the other, takes about 5 seconds and only requires a very small flat head screwdriver or a small curved pick.