Vacuum Reading at Canister

[Boxy_02]

I think I located my vacuum leak!

I found the diaphragm that controls the coolant changeover at the transmission was not holding.

After capping the valve, the vacuum readings went from -8 to -19 at 800 rpm idle.
Is -19 a good value?

Hoping this fixes my codes once and for all!

Also - Will it take time for the PCM to relearn Fuel Trim, etc after the battery was reconnected?

Thanks!

[boxfix]

-19 should be fine. I fixed lots of leaks and had a leaking reservoir as well. I got around-19 when done and all the codes went away and the OBD2 monitors reset.