hey guys my check engine light came on again
this time it read code 33 which is port air solenoid valve
i want to know what is the solenoid located and what does it do??
is that the 6 port valve??
i've a 90 vert
and my car kind of miss fire on 2500-3000 rpm

i have code 13 before but i change the vacuum hose from the engine to the pressure sensor reset the light but now code 33 come up

thanks for any help!!

 

http://mazdarx7.iougs.com/secondary.shtml

also check the fuel section in the FSM

 

Its the most fwd solenoid on the ACV.