Results 1 to 8 of 8

Thread: 4BD1 scratchy whine noise

  1. 3rd August 2011, 09:58 AM #1
    cheyne_r's Avatar
    cheyne_r
    cheyne_r is offline Master
    Join Date
    Oct 2008
    Posts
    117
    Total Downloaded
    0

    4BD1 scratchy whine noise

    Hi guys,

    While driving home from Jindabyne on sunday night the county started making a scratchy type of whining noise. The noise happens anytime the accelerator is pushed ( both in and out of gear) but is most noticable while driving. I'm having trouble trying to pin point the noise. It is quite loud. I have stopped driving the car and have it booked in to go see the guys at Opposite Lock on tuesday but I really need to drive it on the weekend (only car).

    I know this will be basically impossible to diagnose without hearing it, but any ideas as to what it could be?
    Reply With Quote Reply With Quote
  2. 3rd August 2011, 10:17 AM #2
    isuzutoo-eh's Avatar
    isuzutoo-eh
    isuzutoo-eh is offline TopicToaster
    Join Date
    Apr 2008
    Location
    Near Seven Hills, Sydney
    Posts
    4,342
    Total Downloaded
    0
    Does the sound change with revs, is it constant or is it only linked to accelerator pedal movement? Checked your fan blades and belts for damage or obstructions? Aircon compressor and alternator? Shoot some WD40 etc on the accelerator pedal's pivot if it is pedal motion related.

    Wedge a brick/shoe on the accelerator when not in gear if its constant but only above idle so you can pin point the sound easier.
    Reply With Quote Reply With Quote
  3. 3rd August 2011, 10:18 AM #3
    isuzurover's Avatar
    isuzurover
    isuzurover is offline Swaggie
    Join Date
    Aug 2006
    Location
    WA
    Posts
    13,786
    Total Downloaded
    0
    Check the crank pulley hasn't come loose and is contacting the fan...
    Reply With Quote Reply With Quote
  4. 3rd August 2011, 12:39 PM #4
    LowRanger's Avatar
    LowRanger
    LowRanger is offline ChatterBox Subscriber
    Join Date
    Nov 2009
    Location
    Western Sydney
    Posts
    2,182
    Total Downloaded
    0
    Noisy thrust bearing?

    Wayne
    Wayne
    ​VK2VRC
    "LandRover" What the Japanese aspire to be
    Taking the road less travelled
    '01 130 dualcab HCPU locked and loaded
    LowRange 116.76:1
    Reply With Quote Reply With Quote
  5. 3rd August 2011, 03:01 PM #5
    Offender90
    Offender90 is offline ChatterBox
    Join Date
    Sep 2007
    Location
    Adelaide, SA
    Posts
    2,223
    Total Downloaded
    0
    Could it be a slipping alternator / AC compressor belt?

    Does it only happen while the engine speed is changing (especially accelerating)?

    Does it also happen when the car is stationary - in neutral, with engine revving up?
    Reply With Quote Reply With Quote
  6. 3rd August 2011, 05:17 PM #6
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is offline RoverLord Vendor
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
    Posts
    26,497
    Total Downloaded
    0
    drop the fan belt off and run it, if its still there it could be

    the timing gears
    the clutch
    the front bearings in the box.
    power steering pump if you have to timing gear driven one.
    the auto advance unit on the IP

    if its not there with the belt off but comes back when you put it on it could be
    water pump bearing
    alternator
    AC compressor
    front balancer

    once youve got it sussed that far its now a simple case of putting a mechanics stethescope onto the sus component and then having a listen.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
    Reply With Quote Reply With Quote
  7. 3rd August 2011, 07:41 PM #7
    Bearman's Avatar
    Bearman
    Bearman is offline TopicToaster Gold Subscriber
    Join Date
    Jun 2006
    Location
    Hay Point
    Posts
    4,043
    Total Downloaded
    0
    Check your engine mounts, it is possible one of them is broken and the noise is the fan touching the radiator shroud when it flexes under load. If you have just given the vehicle a bit of a workout offroad this is a strong possibility. Also check your gearbox mounts.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)
    Reply With Quote Reply With Quote
  8. 6th August 2011, 10:38 PM #8
    1103.9TDI's Avatar
    1103.9TDI
    1103.9TDI is offline Master
    Join Date
    Jul 2006
    Location
    Cairns, FNQ
    Posts
    647
    Total Downloaded
    0

    Smile

    Take the aircond belts off, and run the Landy, if the noise is gone, it could be the aircond tensioner. Mine went recently, it makes some weird noises, before it seizes.
    Reply With Quote Reply With Quote
« Hi there, another newby.... | LT 95 Clutch advice »

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!