NPP in a box problem
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Joined: Feb 2011
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NPP in a box problem
I recently purchased the NPP in a box kit from nekkid parts and the vacuum solenoid was faulty, so they shipped me a new unit. I assume that solenoid was faulty in the new unit as well because it will not close the valves when it is hooked up. The lines have good vacuum back to the actuators when the solenoid is removed from the line and the valves close in the mufflers immediately when I start the car. Once the solenoid is hooked up, it just clicks and there isn't enough vacuum getting to the actuators to close the valves. I have even closed the actuators by hand with the solenoid hooked up and the valves slowly open once I let go. Does anyone have any ideas on what else I can do? I was thinking of buying the GM vacuum solenoid, but I am not sure if it will be compatible with the aftermarket unit (I know the vacuum lines will work, just not sure on the power supply). Any and all help is appreciated.
Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
Don't want to come off as high and mighty but the chances of two being bad is really slim , they are not that complex at all
Are you sure you have it hooked up correctly ?
Are you getting 12 volts from the fuse tap , how about the other side of the tap ....
How about at the other end ( open the NPP box and you will see the other end ) Are you getting 12 volts at the solenoid inside the box ?
Do you have it grounded right , Did you use the screw that is recommended in the instructions as the others are not a ground ?
Vacuum from the motor side going into the right port and vacuum from the Actuator side is correct with the " T" fitting correctly ?
Try switch the wires around in the box to have it start OPEN...
Dave
Are you sure you have it hooked up correctly ?
Are you getting 12 volts from the fuse tap , how about the other side of the tap ....
How about at the other end ( open the NPP box and you will see the other end ) Are you getting 12 volts at the solenoid inside the box ?
Do you have it grounded right , Did you use the screw that is recommended in the instructions as the others are not a ground ?
Vacuum from the motor side going into the right port and vacuum from the Actuator side is correct with the " T" fitting correctly ?
Try switch the wires around in the box to have it start OPEN...
If your unit has the start up option you can switch the start up mode by removing the 4
screws on the cover. You will see a metal control valve with a yellow top. Currently you
should have the black and red wires attached (both have a red connector on them), the
black wire always must be attached to the valve. The red wire causes the unit to start
CLOSED. You will also find a white wire (with a red connector on it) that is not used. If
you swap the red wire on the valve with the white wire, the unit will always start OPEN.
screws on the cover. You will see a metal control valve with a yellow top. Currently you
should have the black and red wires attached (both have a red connector on them), the
black wire always must be attached to the valve. The red wire causes the unit to start
CLOSED. You will also find a white wire (with a red connector on it) that is not used. If
you swap the red wire on the valve with the white wire, the unit will always start OPEN.
Le Mans Master
Joined: Oct 2014
Posts: 8,672
Likes: 2,726
From: Atlanta GA
here is the link to the instructions
http://www.nakidparts.com/sitebuilde...pplitels3a.pdf
If you have any more questions you can email me at Dcasole at Comcast.net
Dave
