I have an old Ford T-Bird ('88, w 3.8L V-6) that I use as a work car, so as not to abuse the 'good' car (or to rely on it for reliable daily transportation)- a vintage MG. The problem is it has started to miss and buck badly when under load- accelerating, or climbing a hill. I was advised that it's probably due to a faulty MAP sensor, which I dutifully replaced with an OEM new part. It didn't fix the problem. Note also there aren't any unplugged wires or anything else of that nature readily apparent.
Now, I figured I would canvas for some advice before taking it to the shop where a simple fix may well end up costing hundreds of dollars. In the meantime, I'm relying on a 50 year old British car, and short of spending big bucks on a new truck (which is not in the cards) I must fix the old Ford. Help!