A VW Check Engine Light question
The other morning I was driving in for an appointment to my doctor and my car was running great. It is a 1997 VW Golf GL (III generation), automatic transmission, etc etc... and when I left the doctors office, the Check Engine light came on and has not gone off since then. That was two days ago. The car is idling perfectly as far as I can tell by sound. It does not idle rough at all. It is not burning oil. There are no oil leaks or anyting like that. The belts all seem to be in good condition as far as I can tell. I cannot see the timing belt but I dont here any noise that would clue me into a timing problem.
I am thinking it is the mass air flow indicator or oxygen sensor but I am not sure. Some people with similar VW's have said they have had the same problem and they take it to a shop where they replace part after part and the light still keeps coming on after a few days.
So, my question is this: Is there anything in particular I should be looking for as far as a defect. I just got out of the military and I have not had a chance to amass a good set of tools yet, but I plan on doing so very soon and I know I can fix the problem myself, but for now I dont have a code reader or anything like that so I am looking to you all for a few suggestions on what I should be looking at.
Like I said the car is running great, it only has 65,668 miles on it and it has never been driven hard. I dont race it or anything and have made no modifications to it so all the parts are OEM parts.
If anyone has any ideas I would be happy to hear of them.
Thank you very much and Aloha from hawaii!