Skip to content
View in the app

A better way to browse. Learn more.
Ford Owners Club - Ford Forums

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.



Join the Independent Ford Owners' Club

Our community has been built by enthusiasts, for enthusiasts, and proudly run by Ford owners' for over 18 years. As an independent, non-official club, everything you’ll find here, advice, support, and opinions, comes directly from members with genuine Ford ownership experience.

Join our friendly community... it's Free!

 

Alternator upgrade

Swearwolf
Swearwolf
in Ford Focus Club

Featured Replies

So my alternator has finally given up the ghost and new one arrives tomorrow..

As I've added a bunch of optional extras to my car, 

Heated seats
Xenon headlights/washers/levelling
Full keyless entry and start
Factory sat nav

and probably more i've forgotten

I chose to go for a 150A alternator as mine is the 120A currently

I've read somewhere it needs to be configured in the PCM to work properly, no problem

Only issue is, it's in the VID block of the PCM configuration, which can't be changed without re flashing the entire ECU.

My car also has a stage 1 remap with EGR removal software...

On previous focus/cmaxes I've been able to download the PCM map, save it, edit VID block and reupload, however on this car I can't for some reason as ELMConfig bugs out right at the end.. I've bricked 2 PCMs already this way

What I'm asking essentially is ... will the new alternator be ok without PCM update? and does anyone know any other way at all to tell it it's now 150A?

Thanks in advance!

  • Quote


    What he says 🤣33764021_Screenshot_20211101-2049112.thumb.png.5350277e0da56e0bf3dd6f9b4f2edcef.png

  • Quote
    • Like 2
    • Author

    Owwww:(

  • Quote

    • Latest Deals

    Ford UK Shop for genuine Ford parts & accessories

    Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club

    Join the conversation

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

    Guest
    Reply to this topic...
    Go to topic listing

    The "Digestive"

    • The Digestive Forum Roundup (31st May - 7th June 2026)

      Steve ·
      The Digestive Forum Roundup (31st May - 7th June 2026) We hope you’re all enjoying your week and finding time for some time enjoying your Ford! This week, our vibrant forum has been buzzing with discussions that touch on a diverse range of Ford models, from the Mondeo to the Fiesta and Focus. Here’s a recap of some key conversations that might pique your interest. Starting with the Mondeo, user Frenchspanner shared a particularly frustrating issue relating to a 'Immobiliser Active' message appea
      Steve
      Steve
      • 36 views





    Background Picker
    Customize Layout

    Account

    Navigation

    Search

    Search

    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.