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Old 08-25-2013   #1
KJL
 
Join Date: Mar 2013
Location: Roswell, GA
Posts: 232
Default How to vacuum test secondary throttle actuator system

I have the plenum removed and thought it would be a good time to check the secondary vacuum actuators. I have a hand vacuum pump I use to check things out on my 72. With plenum removed, where should pump be connected and what lines should be plugged? There are lines to a vacuum pump, sensor (mounted under plenum) and a line that goes to the plenum and connects to the solenoid (not sure what this is for other than solenoid activation?).

Thanks!!
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1995 ZR1 #159
Ported,Corsa,4.10 Rear, Dual Disc RAM Clutch, Alum Flywheel, Haibeck Chip, ZFDoc Plates, Relocated Battery 400 rwhp
1992 ZR1 #280
Ported, Locked Secondary's, Flowmaster Exhaust, Haibeck Chip, 375rwhp
1996 Collectors LT4 (Stock)
1972 Convertible 434 Small Block
572 rwhp
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