My fiance` and I were looking over M5's on ebay today and may have possibly discovered a fix for the check engine light coming on. There was a gentleman who has a 91 M5 on there and was describing the problem and he said he took it to the dealership and they ran a diagnostic test on it and it only thru one code the only thing that it came back with was the car is not reading the air intake temperature. He was a master tech from Pompano Beach, FL. Can anyone tell me if they think that this is a possibility as well???? [unsure]
