Quote:
Originally Posted by coolbreeze551
I will try a new gauge sensor and go from there. It is a 2001 base with 155k km's. I have recently added the sensor itself along with idle control valve (used), 74 mm TB with IPD plenum.
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A small intake air leak as a result of your recent TB/Plenum work would explain the idle stumble at high vacuum. Retrace your steps.