I would keep an eye on the alternator,if that is going it will give an EML prompt and may put you, momentarilly, in LIMP Mode. Try this (it may work on your car), hit the 1000 and 10 numbers on the OBC at the same time, the OBC should read TEST. Then using the number key scroll down until you reach #9, then hit S/R and you should read either battery voltage (with engine off) or Alternator voltage with engine running,(voltage on alternator should be between 13.5 VDC and 14.1 VDC). I did this while driving and every time the car wnet into limp I looked at the OBC to see what my alternator voltage was reading. also, a bad MAF will put you in limp mode, I had this happen on my1988 750 until I was able to sort out the problem, I put in two used MAF, and that solved my problem.