I had the transmission replaced about 55,000 miles ago and when the car was in for its last service (355, 000 miles on car) I had them do the transmmission service as well. When i first got on the freeway i could feel something strage when under full acceleration it tried to shift from 3rd to 4th. It was jumpy, like it didn't know if it wanted to shift or not. I let off a little and it shifted fine. I figured it was because the transmission was cold so i didn't think much abou tit. A few weeks later, it started doing it between other gears as well. I checked the fluid and there was too much. I drained some out to the proper level but i am still having the trouble that, even if not under full acceleration, the transmission does not want to go into the next gear unless i let off a little bit. In this first pic (i believe is the transmission control valve?), if i take the bottom hose off, the transmission does not pull as hard and i still have to lift off to get it to shift, but it does not have that jumpy feeling.
While looking for a vacuum leak, i came across another problem. Next to the brake master cylinder is a large vacuum hose and there is a branch off it (pic 2) that has been plugged. It looks as though the top of the part in pic 1 haqs been plugged as weel. There are only 2 hoses attached but there are 3 ports. I do not know if these lines are suppose to be connected to eachother or to other things or what they even control. I can see no loose hoses that have been plugged that would attach to either of these locations mentioned. Any ideas where to look or what to test? Anyone have a vacuum diagram for a 300SDL? TIA Shannon
86 300sdl 357,000mi 80 450sl 220,000 mi