NPP. Issue Question
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,056
Likes: 211
From: Central Ohio
NPP. Issue Question
I have NPP. With the mild to wild switch
today I noticed I could click the switch, they
would close and it would go quite for about 5
seconds then the valves would open and go back
to being loud again.
I suspect the issue is in the valve actuator/diaphragms
- what say you?
today I noticed I could click the switch, they
would close and it would go quite for about 5
seconds then the valves would open and go back
to being loud again.
I suspect the issue is in the valve actuator/diaphragms
- what say you?
Safety Car
Joined: Aug 2017
Posts: 4,922
Likes: 2,334
From: Etobicoke (Toronto) Ontario
I’d say the first thing to do is unplug the fuse tap and replace the fuse you removed and see if normal operation resumes. If it does, then somehow there’s an issue with the M2W control box. If replacing the fuse doesn’t change anything, I’d say the vacuum solenoid is starting to fail and gets weaker as it heats up, so that it can’t maintain its closed position. That problem has been reported a few times.
Racer
Joined: Dec 2018
Posts: 498
Likes: 211
From: Wisconsin
2023 C6 of the Year Finalist - Unmodified
I had one of the actuators on the mufflers them selves fail. It caused a similar problem because it can cause a vacuum leak. When the vacuum is first sent to the actuators they close and as the vacuum is lost they reopen.I trouble shot this by unpluging and capping one vacuum line at the actuators at a time. When I unplugged and capped the left side the right side work as it should. I was able to find a used actuator on line and that solved the problem. Good Luck
