allison 740 tran

[superbee1964]

I have a 1984 mc9 bus with a allison 740 and it works graet except for on thing, if I come to a stop sign fairly quick and then take off quickly the trans feels like its out of fluid and has a delay before the trans grabs (about a secound) if I wait about two secounds at the stop sign the trans will catch just fine, is this normal?

 

[transrand]

allison 740 tran

It sounds like it is not shifting down to first gear when it should. Ther are a few possibilities. It could be a sticking governor, low pressure at an idle, low idle RPM, or it could need a simple adjustment in your valvebody.