I've cleaned the MAF sensor a couple of times within the past month. That and vacuum leaks were my first suspects after running a search on the symptom. I wish the problem occurred more often, so I could tell when it is fixed, but it only happens once every 10 days or so. I might pull the pump relay and look at it closer. I suppose the tank has to be dropped to check the fuel pump. Unfortunately, for the first time in 2 years, my daughter filled up the tank. I'll keep digging.

thanks for the reply