I just had a replacement engine put in my 1994 Angola a few weeks ago finally. The bus has to warm up for about 10 minutes before it will engage into gear. After it goes into gear the first time, it's fine. I can take it back to the shop that did it but it's 8 hours round trip and if I do or don't do that I'd like to try to get an idea of what it might be if anyone can help.