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Franke · 07-22-2013

The FSM shows that the sensor under the ECM is the secondary port throttle vacuum sensor. It monitors how much vacuum is applied to the secondary actuators. I don't think that would be an issue here unless it is a source of a vacuum leak. A failure of this sensor should set a code 56.

07-22-2013	#24
Franke Join Date: May 2013 Location: Beaver, PA Posts: 515	Re: 92 Z NIGHTMARE The FSM shows that the sensor under the ECM is the secondary port throttle vacuum sensor. It monitors how much vacuum is applied to the secondary actuators. I don't think that would be an issue here unless it is a source of a vacuum leak. A failure of this sensor should set a code 56.