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Throttle issue on 99 polo

  • 23-02-2009 11:28am
    #1
    wazzoraybelle
    Registered Users, Registered Users 2 Posts: 659 ✭✭✭


    For the last month an a half I've been driving a 1.4 polo estate that had previously been idle for 2 years. It was driving fine about a week ago when I noticed a squeal most times when I depressed the accelerator even when stationary in neutral. Then at the weekend it started to idle between 1000 and 2500 rpm after a long drive.
    I thought these 2 issues were related and removed the air box, while doing that I removed the ht leads from the plugs just to make sure they were seated properly and the idle dropped to 800-850 rpm and has been fine since, but the squeal is still there.
    I'm thinking that the throttle body needs a good clean.
    Does anyone have any other ideas? Does it also sound like the high idle problem is solved?
    Any help appreciated.


Comments

  • #2
    Saab Ed
    Closed Accounts Posts: 5,374 ✭✭✭Saab Ed


    wazzoraybelle wrote: »
    For the last month an a half I've been driving a 1.4 polo estate that had previously been idle for 2 years. It was driving fine about a week ago when I noticed a squeal most times when I depressed the accelerator even when stationary in neutral. Then at the weekend it started to idle between 1000 and 2500 rpm after a long drive.
    I thought these 2 issues were related and removed the air box, while doing that I removed the ht leads from the plugs just to make sure they were seated properly and the idle dropped to 800-850 rpm and has been fine since, but the squeal is still there.
    I'm thinking that the throttle body needs a good clean.
    Does anyone have any other ideas? Does it also sound like the high idle problem is solved?
    Any help appreciated.


    I wonder is it a perished vachume hose and what you are hearing is the air being drawn in. That would cause the incorrect idle.


  • #3
    crosstownk
    Registered Users, Registered Users 2 Posts: 12,863 ✭✭✭✭crosstownk


    Is there any chance that the squeal you mention could be the alternator belt slipping...........?

    As for the throttle body, it's quite common for a lot of VWs to have a build up of dirt on the throttle body. This can be cleaned with a few spray's of cat-friendly carb cleaner as the engine is running - it's best to rev the engine while spraying to avoid cutting out. The throttle angle may need to be reset afterwards which will require a diagnosis tool.
    Untitled Image




  • #4
    AAARON
    Closed Accounts Posts: 33 ✭AAARON


    id go second on vachume hose


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