Jump to content

Bad Way Connection - Code 2789


Martin1
 Share

Recommended Posts

Hi ,

Maybe someone had a similar problem . I had replaced the fuel pump about 3 weeks ago. Car never done this before. When waiting at the lights or just idling the RPM jumps down below 500 and goes up again.This is happening when the engine is warm. When is cold it runs like charm.On some occasions it even stalls. I had checked for vacuum leaks.Nothing.Cleaned the MAF sensor. The same. Fault code that shows is 2789 bad way connection . could be the aftermarket fuel pump? No leaks . checked already . My car is 318ci 2002 conv.

Anyone had similar problem?

Link to comment
Share on other sites

Guest Mister Dabsy

Rough idle like that could be air in the fuel-line which can be purged at the end of the fuel-rail...

Other causes could be the Idle Control Valve (ICV) which may be faulty or dirty, and maybe a build-up of crap in the intake system which is generally cured by cleaning the throttle-body...

HTH ;)

Link to comment
Share on other sites

Latest Deals

BMW Official Store for genuine BMW parts & accessories

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

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...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share





  • Latest Topics

    1. 0

      Did the E61 have a non-slide sunroof?

    2. 1

      530e Servicing Requirement

    3. 12

      Insane insurance quotation !

    4. 3

      BMW e38

    5. 12

      Insane insurance quotation !

  • Recent Achievements

    • olly530i earned a badge
      Week One Done
    • olly530i earned a badge
      One Month Later
    • Sbannas earned a badge
      One Month Later
    • ARoosterinaRoadster went up a rank
      Rookie
    • Bogey earned a badge
      Conversation Starter

×
×
  • Create New...

Forums


News


Membership