I am about to start pulling my hair out.
I am wrestling with a vacuum leak problem.
Its an intermitten vacuum leak and when it leaks, the engine bogs out and doesn't shift properly and yet when it doesn't leak , there is a ton of power.
I have used carb cleaner to try to chase it, I have gone over vacuum routing diagrams, even isolated vacuum circuits and still cant find it.
It only seems to happen on the road is the real problem. I would ask FABO experts but its a non mopar vehicle ....AGGHHHH