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.

02 voltage and injector fire rate?

Quicky guys... what is an ideal voltage for the O2 sensors at idle?

Also the injector fire rate. On my digital gauge/computer I have in the car it reads inj 1: 2.7m/sec ... inj 2: 2.5m/sec.

My question for the injectors is. Should they fire at exactly the same rate... later during acceleration inj 1 went to 10.7 while inj 2 went to 14.0. Could this be dodgy mapping as the injectors are only two years old.

  • Quote

    • Featured Replies

    O2 voltage at idle varies depending if it's lean or rich, and also how much exhaust gas the sensors are picking up. They can often struggle at idle RPM (hence the test for O2 sensors is conducted at 2k rpm).

     

    Has the car been mapped?

     

    LHS & RHS bank don't fire at exactly the same rate. Would need a lot more information (as in data) to determine if there is an issue. Nothing to do with age of the injectors.

  • Quote
    • Author

    Nice one Noz. Thankyou

    it has a performance chip on the ecu but god knows what's on it.

  • Quote

    • 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...
    https://www.300zx-owners.club/forums/topic/150526-02-voltage-and-injector-fire-rate/
    Go to topic listing

    Recently Browsing 0

    • No registered users viewing this page.

    Important Information

    Terms of Use

    I accept

    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.