[~The Jester~]

I use carb cleaner on the MAF sensor all the time. Use the "red needle" that comes with the can, just don't put it right up against the sensor itself. Usually it "looks" OK, but after cleaning it, you'll be surprised just how small that little resistor in there really is.

I've also had problems with the Bosch sensors on EEC-IV and V systems. Car runs like crap with a brand new Bosch, take it out hang a Ford unit in there, and presto! It's a few extra bucks, but in my opinion, money well spent.