Secondary Vacuum Pressure = 0 kPa/0.56V - ZR-1 Net Registry Forums

dondon · 10-25-2013

I'm trying to figure out if the secondary vacuum sensor by the battery on my 90 should be reading different values under normal operating conditions.

At the moment, with the engine idling it reads 0Kpa if I blip the throttle, it reads 0kPa... it basically reads 0 kPa all the time. I don't know if this is a symptom of why my secondaries don't appear to operate or not. My MAP pressure changes when throttle changes, should the secondary vacuum pressure not change aswell?

How do I troubleshoot why this is incorrect if it is?

10-25-2013	#1
dondon Join Date: Jul 2013 Location: Saint Petersburg, FL Posts: 32	Secondary Vacuum Pressure = 0 kPa/0.56V I'm trying to figure out if the secondary vacuum sensor by the battery on my 90 should be reading different values under normal operating conditions. At the moment, with the engine idling it reads 0Kpa if I blip the throttle, it reads 0kPa... it basically reads 0 kPa all the time. I don't know if this is a symptom of why my secondaries don't appear to operate or not. My MAP pressure changes when throttle changes, should the secondary vacuum pressure not change aswell? How do I troubleshoot why this is incorrect if it is?