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-   -   Vacuum Reading at Canister (http://986forum.com/forums/boxster-general-discussions/72182-vacuum-reading-canister.html)

Boxy_02 05-15-2018 02:15 AM

Vacuum Reading at Canister
 
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 05-16-2018 04:17 PM

-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.


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