What do these do?????
#1
Rotory United RU.
![](https://www.rx7club.com/images/misc/05_year_icon.png)
Thread Starter
iTrader: (1)
Join Date: Oct 2008
Location: Bronx, NY
Posts: 284
Likes: 0
Received 0 Likes
on
0 Posts
What do these do?????
my build is nearing the end. Maybe two more weeks and ill have her started.... (If i did everything right.) The previous owner removed the actuators and the air pump. So what do these things do. Vacuum switch, Relief solenoid valve and switching solenoid valve. If i don't need them how to i plug up the vacuum holes. Thanks in advance guys.
![](http://i571.photobucket.com/albums/ss152/bsevilla912/DSC01220.jpg)
![](http://i571.photobucket.com/albums/ss152/bsevilla912/DSC01220.jpg)
![](http://i571.photobucket.com/albums/ss152/bsevilla912/DSC01218.jpg)
#2
1) Vacuum control switch.
my build is nearing the end. Maybe two more weeks and ill have her started.... (If i did everything right.) The previous owner removed the actuators and the air pump. So what do these things do. Vacuum switch, Relief solenoid valve and switching solenoid valve. If i don't need them how to i plug up the vacuum holes. Thanks in advance guys.
The other two, I believe, control the air control valve which if memory serves correctly is what dumps all the air into only one rotor on de-acceleration to stop backfires.
Hopefully, someone else knows better.
Last edited by rx7lives; 04-16-12 at 10:07 AM.
#4
Moderator
![](/images/misc/20_year_icon.png)
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,981
Received 2,688 Likes
on
1,903 Posts
the two solenoids are for the air control valve. i'm not sure what the vacuum switch actually does, but i know that it will horribly fail smog if its missing/bad