le6898

My FG is having a rev hunting issue from anywhere between 1k and 2.5k. Jumps anywhere between 250 to 1k revs. Hesitates to accelerate too, doesn't have a high idle or a missfire. No lights on the dash and no major codes. Have tried new maps and 02 sensor. Tried to the best of my ability to spray the intake with ether and propane. Any ideas would be appreciated. Cheers