Jump to content
View in the app

A better way to browse. Learn more.

300ZX Owners Club

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Haven't had time to search the forum :slap: so the answer may be around somewhere, but...

 

I'm trying to see if a rough running problem I have may be the AAV (i.e. the metal contraption bolted to the passenger's side of the plenum right at the back) by bypassing it.

 

I propose to unplug the plenum tube from the valve and seal it off, but I need to know what the sensor on the valve does- is it open- or short- circuit depending on temperature, or is there a resestive load variable thingumybob?

 

Failing that, please could someone stick a multimeter on the valve contacts when the ingine's hot and let me know what the resistance is?

 

Cheers!

 

Mark

Featured Replies

Right let me think mmmmmm

 

Right the way I see it is you put your left leg in shake it all about.....

 

Well I guess am trying to say, I don't have a bloody clue........ Plus I need too get to a 1000 post soon too. :smash: :smash: :smash:

 

Jay

What sensor are you talking about? Are you sure its not the FICD connector (extra air supply for air-con operaton).

The ECU doesn't receive feedback from the AAC as far as I know. The RPM is essentially all the feedback it needs to control on.

 

Unless I'm wrong though, the AAV supplies air directly into the pleunm through the back, the hose that runs from AAV to cold start regulator then to the balance bar may be the one you've removed?

Easiest way is to remove the air supply to the whole assembly. This is a 1/2-3/4"? pipe that runs down the LHS of the plenum and is connected to a hardpipe.

  • Author

Ta John...

 

Ah, I think it's the cold start regulator I'm talking about then, not the AAV. And yes- the pipe from the balance bar to the regulator is the one I removed.

 

There's an electrical connector to it which sprouts from the coilpack/injector loom- what should I do with it? I assumed it connected to a sensor and that it should be shorted, left open circuit or something. Unless it's a feed, in which case I'll just leave it disconnected...

 

I can guess the function of the cold start regulator, but what does the AAV do then? Does it control idling or something?

 

Cheers,

 

Mark

Right let me think mmmmmm

 

Plus I need too get to a 1000 post soon too. :smash: :smash: :smash:

 

Jay

 

 

Jay????

  • Author

 

Yep that helps a lot! Thanks Vijay. :bow:

 

Looks like my air regulator is ker-nackered. Only reads 1 Ohm. So is the electrical bit a heater rather than a sensor?

 

Guess I should reset the ECU as well, and that article reminds me I haven't even inspected the throttle bodies yet. :rolleyes:

 

Ho hum. :smw:

 

Oh one final thing before I forget- Sod off post whores! :slap: :D

 

Cheers,

 

Mark

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

Recently Browsing 0

  • No registered users viewing this page.

Important Information

Terms of Use

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.