Well the title pretty much says it all.

My situation: I purchased a car a month or so ago, it has a 700R4 with

everything hydraulic. Even the lock-up of the TC is hydraulically

controlled. Well, it wouldn't lock up the TC, and my friend suggested

I check the fluid level. Sure enough, it was about 3/4 of a quart low!

I filled it up to normal levels, and now it has another problem. It

won't stay in 4th gear.

If I accelerate at a normal speed up to like 60, it stays in 3rd until

I let off the gas, then drops to 4th and as long as I don't give it

much gas stays there. But the minute I give it just a little gas (not

much) it drops back down to 3rd. When I'm up around 70+, it won't even

hold 4th at just enough gas to hold cruise. It keeps dropping down to

3rd. Let alone bridges, it drops to 3rd there when it sees them a mile

away.

I really have no idea what's causing this. I thought maybe the TV

cable, so I adjusted the slider in and out and it seems to do it

either way.

Any ideas?

Thanks

-Josh