Ok, here's the latest and greatest..well, not greatest.

recap:

I had reverse and overdrive issues a few months ago, and figured (with help) it was the solenoid.

So I re-did the O-rings on it, and it worked fine. It wouldn't go into OD, but it was drivable. I didn't drive it though, because there was an oil leak I had been trying to muster up the energy to fix/locate. Also, I have access to a second one, so I don't HAVE to drive my volvo.

But today, I went to drive it and it did the same thing with reverse again. I'd back up and it'd be slipping/whirring, much like it did when my solenoid was needing to be fixed.

Forward was fine..reverse? not so much.

I haven't checked anything (I have to clear stuff before I put it in the garage), so I don't know what the issue is. It could be low on fluid..I don't know.

Before today when I did drive it (I probably have put 30 miles on it since I last 'fixed' it), it gave me no problems outside of not going into OD, which I already knew needed to be fixed/replaced.

Maybe the solenoid is crapped.

Any ideas what it could be, based on my limited description here?