Replies to others- I’ll check the air pump, I seem to recall there is a small vacuum line to it that I pulled loose while working on the O2 wiring once. Maybe again or compromised hose.

My DISA passes the simple “holds vacuum” test but there is another test that requires a vacuum being applied and injecting 12v to the connector causing the motor to activate and close the DISA flap. Mine failed that but so did a replacement DISA so good chance I did the test wrong.

Thanks to all for the help.


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