Recently I've been having a problem where when it's a cold wet day the car stutters about 100 rpm when I'm driving at a constant speed. It makes kind of a bang and it's only when I keep the car at a constant speed for more than a couple seconds. I'm positive it's something to do with the trans and I think it might be the torque converter trying to lock up. Is there a way to test the solenoid for the torque converter clutch without dropping the pan or are there other things that could cause these symptoms. Thanks in advance!