Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Please note that it is not permitted to have referral links posted in your signature. Keep these links contained in the appropriate forum. Thank you.

https://www.boards.ie/discussion/2055940817/signature-rules
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

BMW 5 Series Performance Problems

  • 25-05-2009 8:54pm
    #1
    Dartarded
    Closed Accounts Posts: 7 ✭


    Hi Chaps,

    I have a 01 BMW 525i and noticed that the car has developed a
    flat spot at between 4K and 4.5K RPM , When accelerating the car pulls smootly up to about 4K RPM were it still accelerates but just not as smoothly , it seems to almost hesitate , but then over 4500 RPM it pulls cleanly again throughout the rest of the rev range.
    Just wondering , before i bring it to a mechanic , if anybody could offer any suggestions as to a cause to the problem?

    Thanks


Comments

  • #2
    cianclarke
    Registered Users, Registered Users 2 Posts: 1,389 ✭✭✭cianclarke


    As I recall, the biggest issue with any sort of performance issues is the Mass Airflow Sensor (MAF sensor), and should be the first port of call when troubleshooting..
    Diagnostics hookup should reveal a lot!


  • #3
    Stevie Dakota
    Closed Accounts Posts: 2,817 ✭✭✭Stevie Dakota


    +1


  • #4
    Dartarded
    Closed Accounts Posts: 7 ✭Dartarded


    Do i need to go to a BMW Dealer or will any independant do ?


  • #5
    Anan1
    Registered Users, Registered Users 2 Posts: 22,815 ✭✭✭✭Anan1


    An independent would be better, or if you're up for it it's pretty easy to fit yourself.


  • #6
    Dartarded
    Closed Accounts Posts: 7 ✭Dartarded


    Hi Anan1, Do you mean the fitting of the MAF or the diagnostics? either way
    i would be more than up for it. in these recessionary times i would prefer to do what i can myself :)


  • Advertisement
  • #7
    Anan1
    Registered Users, Registered Users 2 Posts: 22,815 ✭✭✭✭Anan1


    The fitting of the MAF is easy, once you're sure that the problem is the MAF. Diagnostics requires the correct equipment, and is probably best left to a specialist. Are you in Dublin? If so, give AC Car Sales a call, they're friendly, helpful guys:http://www.accarsales.com/


  • #8
    Dartarded
    Closed Accounts Posts: 7 ✭Dartarded


    I have the car booked in for the free BMW checkup http://www.boards.ie/vbulletin/showthread.php?t=2055568024
    on Friday , I might chance my arm and see if they would hook it up and run the diagnostics on it. Thanks for the replies chaps.


Advertisement