On my Zed there is a single sub loom near the battery area with a square connector similar to an injector connector which has been left unplugged, anyone know the function of this?

The sub loom is just to the right of the oil dipstick where it comes off the main loom, and is pretty much in-line with the balance bar if you're looking from the battery side.

Iirc it's part of the aiv system. It has some vacuum lines going to the solenoid right? If not then it's probably deleted

Thanks:) no solenoid there, just the loom with the connector which was tucked down by the battery clamp, so yes sounds like the aiv system has been deleted, not too sure exactly what the aiv does / advantage of delete

Thanks:) no solenoid there, just the loom with the connector which was tucked down by the battery clamp, so yes sounds like the aiv system has been deleted, not too sure exactly what the aiv does / advantage of delete

Puts air into the exhaust to dilute the exhaust gases and improve (cheat) emissions. It's just unnecessary junk in the engine bay.

Thanks Alic, I have another Zed which I just checked and it has

the solenoid and vacuum lines connected! So will get around to

doing the delete in the near future!

Many of the AIV removal guides say AIV system was fitted

on 1990 - 1992 only, so with mine being a 1993 JDM is that just mis-information?

Is the solenoid known as the PRVR AIV EGR solenoid?

Is the solenoid known as the PRVR AIV EGR solenoid?

 

EGR is a valve on the back of the block. The PRV and AIV are separate solenoids. Each has its own plug.

The solenoid looks like this:

https://conceptzperformance.com/nissan-infiniti-nissan-oem-300zx-prvr-aiv-egr-solenoid-valve-z32-14956-30p00_p_5724.php

The one near the battery is the PRV, the AIV is at the other side of the engine bay, the solenoids are the same though:thumbup1:

The one near the battery is the PRV, the AIV is at the other side of the engine bay, the solenoids are the same though:thumbup1:

Thanks, was getting all confused about this yesterday, makes sense now:)