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! |
-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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