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

Rev Count

  • 08-09-2010 1:42pm
    #1
    bizzo
    Registered Users, Registered Users 2 Posts: 84 ✭✭


    Hi looking for some advice.


    The rev counter in my car has started to flick up and down in the last few days. Nothing above 1 lets say if im stopped in traffic in neutral but just flickers. The engine is also maybe 5% louder as it does this. Is it somethin i need to fix asap or what?


    Any help gladly taken


Comments

  • #2
    john kinsella
    Registered Users, Registered Users 2 Posts: 462 ✭✭john kinsella


    Is it a VW by any chance? If not what make and age etc?


  • #3
    bizzo
    Registered Users, Registered Users 2 Posts: 84 ✭✭bizzo


    No its a bmw 320 05 new model. ???


  • #4
    john kinsella
    Registered Users, Registered Users 2 Posts: 462 ✭✭john kinsella


    Its the idel control valve. Just take it out and give it a clean and that will hopefully fix it.

    http://www.youtube.com/watch?v=STy-J10DtiU


  • #5
    bizzo
    Registered Users, Registered Users 2 Posts: 84 ✭✭bizzo


    Thats great.

    Your fairly sure thats what it is. Someone else mentioned spark plug to me?


  • #6
    Anan1
    Registered Users, Registered Users 2 Posts: 22,815 ✭✭✭✭Anan1


    TBH, it could be anything. If you're going to try fixing it yourself then cleaning the idle control valve is a good place to start.


  • Advertisement
  • #7
    padyjoe
    Registered Users, Registered Users 2 Posts: 1,195 ✭✭✭padyjoe


    So you mean a rough idle? Any power loss felt? Could be the above mentioned idle control valve, vacuum leak, or dirty air flow sensor as well.


  • #8
    StompToWork
    Registered Users, Registered Users 2 Posts: 905 ✭✭✭StompToWork


    To be honest, it could be anything!! Idle control valve would be the best of many guesses based on the info available.

    Could also be an O2 sensor, Spark plug, ignition coils, ignition leads, etc,etc.

    Does your car have AC with Climate control? Could be that the Climate control is set to fully auto, so it might be kicking in the AC from time to time, which would drop your RPM briefly if you were in idle. An "on-the-way-out" AC would also account for the apparent increase in engine noise.


  • #9
    john kinsella
    Registered Users, Registered Users 2 Posts: 462 ✭✭john kinsella


    Yeah i would be fairly sure alright. I had a mate with a VW and it had the exact same problem on a new(ish) car too. He went to a load of garages and ended up paying a fortune for them to tell him they hadn't a clue what was wrong with it. Then we both took out the valve, cleaned it and now its working fine. That was over 6 months ago
    If i were you i'd clean the valve and if you have any more problems get yourself into a BMW garage for a diagnostic


  • #10
    bizzo
    Registered Users, Registered Users 2 Posts: 84 ✭✭bizzo


    Power seems fine. Just concerned that driving it will give me bigger problems. TBH id only mess up trying to look at it myself. Would only end up costing me more. To the flipping garage i go!


  • #11
    Anan1
    Registered Users, Registered Users 2 Posts: 22,815 ✭✭✭✭Anan1


    bizzo wrote: »
    Power seems fine. Just concerned that driving it will give me bigger problems. TBH id only mess up trying to look at it myself. Would only end up costing me more. To the flipping garage i go!
    Maybe try these guys? I've yet to have work done by them, but from talking to them they seem to know their stuff. http://www.bosch.ie/content/language1/html/715_3075.htm


  • Advertisement
Advertisement