It is my first post and I will get my bus posted up into the Post your bus section shortly.
It is a bit of a different machine. The nameplate says it is a 1986 Concorde which of course in the bus world I have found out over the years means nothing. What it is really is a ~1981 GMC Transit bus from the floor down with ~1986 Prevost front and side glass (3 windows each side), Prevost front rear caps and Prevost lights and front "grill". It has always been a motorhome and from what I can tell it only has 70000 miles on it.
Good site you have going here. I was perusing it last week trying to figure out how to get my VS2-6 to shift into what I thought was 3rd but now gather is really my direct drive at a higher rpm.
Well I ran out of time and went on my trip from Ontario, Canada to Loudon, New Hampshire to see the race. That is when I had wished I had found your site a bit earlier and had more research under my belt.
60 miles outside of Loudon I stopped for fuel and when I pulled back on I-89 I lost "3rd" gear and that did not work well with Interstate speeds and all the hills in that part of the country. Nevertheless to say I got into some serious overheating problems and that 60 miles ended up taking me 3 hours between pulling over to let the bus cool down and trying to figure out what the heck was going on as because I was in such huge hills it took me awhile to figure out that from what I now gather from reading on here that the Direct Drive was not engaging as I could not get enough speed going to tell that I was just overrevving due to not upshifting.
Well once you get to Nascar rough camping you can't really leave until the end of the weekend so I crossed my fingers and hoped that when I started up cold everything would be ok. Well it was not and I limped home almost 450 miles going secondary routes including through the mountains at Killington VA lol. My GPS when I got home said I had moving average of about 30 MPH. After the 13.5 hours it took to get home I believe it.
Anyway here is the technical part:
Prior to my problem the bus which has a 6V71 and a VS2-6 would shift consistently from 1st to 2nd very, very firmly (shake the whole bus, unsettle anybody that might be standing) at ~27mph. Then it would shift into what I thought was 3rd (but is Direct Drive right??) at ~37mph nicely. I was looking to change the shift as it would never shift down until 31-32 and on a big hill by the time it would shift it would then it had lost enough speed it would usually just end up in 1st.
Now what it is doing is accelerating fine from bottom end but the shift into 2nd is so imperceptible unless you are really paying attention you don't notice it and actually sometimes I think it might be staying in 1st as on a slight grade it won't climb over 33-34mph. If and only if it is a downgrade can I then coax it up to 35-40mph and a big downgrade will actually let me get up to over 50mph where I can feel the engine governor kick in at 51-52mph. So as you can imagine I was in neutral alot on those VA hills and my brakes got a good workout.
Here is a something that might be important. I was reading a post from last year where Tradecities was having similar issues https://www.busconversions.com/bbs/index.php?topic=11594.0
but that was with a VH and I don't see 2 solenoids on my VS. ALSO very important when I got the bus all the wires except one were disconnected from the solenoid (which I believe is the neutral solenoid). It did not seem right to me but it always worked and nobody around here knows those trannys so I left it alone.
Paso One do you have any manuals for the VS2-6 or does anybody else?
So once I get diagrams I am going to start with getting my wires hooked up correctly and look at the governor (which I so badly wanted to take apart on the road as although I didn't no for sure it was a governor I was guessing it was but .....not a good idea on the road without a manual).
Does anybody else have any suggestions?
Thanks in advance