Originally Posted by Titus
When you say that it is only at start up, do you mean that you reach full boost when doing this same test on a fully warmed up engine. You only see maximum boost (whatever pressure that is) when the engine is at high speeds under high load. ....
I could drive until doomsday with no boost at all, regardless of engine temp. The only thing that fixes it is to turn the engine off and on again. It resets the computer, or something.
It tends to happen after the van has been sitting a few days. There might be a correlation with humidity - I can't tell yet.