Results 1 to 6 of 6

Thread: 300 tdi tacho drop out and noise from around pulleys

  1. 24th March 2014, 08:35 AM #1
    Cammo
    Cammo is offline Master Subscriber
    Join Date
    Aug 2012
    Location
    Hunter Valley, NSW
    Posts
    244
    Total Downloaded
    0

    300 tdi tacho drop out and noise from around pulleys

    Brother picked up his disco from sydney yesterday and drove home no problems...
    Except for an erratic tacho which got progressively worse to the point it now doesn't register at all.

    I havent had a chance to look at it yet so for those in the know:
    Where's the tacho pick up its reading? And could this be at all related to a noise he says is coming from the area close to the alternator and water pump pulleys?

    Won't get a chance to have a look until later in the week - any leads appreciated
    Reply With Quote Reply With Quote
  2. 24th March 2014, 08:46 AM #2
    steveG's Avatar
    steveG
    steveG is offline TopicToaster Subscriber
    Join Date
    Sep 2008
    Location
    Geelong, VIC
    Posts
    4,442
    Total Downloaded
    0
    Those sound like classic signs of a failing/failed alternator.

    Tacho gets its signal from a separate connection on the alternator.

    Drop the belt off and have a spin and wriggle of the alternator pulley for starters. Was the battery light on too?

    Steve
    1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
    1988 120 with rust and potential
    1999 300tdi 130 single cab - "stock as bro"
    2003 D2a Td5 - the boss's daily drive
    Reply With Quote Reply With Quote
  3. 24th March 2014, 12:25 PM #3
    gazby
    gazby is offline Master
    Join Date
    Mar 2011
    Location
    Cooktown, North Queensland
    Posts
    236
    Total Downloaded
    0

    Cool The most common cause.

    Check out the smallish white wire on the back of the alternator, the female spade connector on the end of that white wire gets cooked by exhaust heat etc and a bad connection occurs either where the wire enters the connector or the connector goes onto the alternator.
    Sometimes it is easier to cut the old one off the end of the wire and fit a new female spade.
    Worked on our 300Tdi, no problems for past 2 years.
    Reply With Quote Reply With Quote
  4. 24th March 2014, 04:22 PM #4
    loanrangie's Avatar
    loanrangie
    loanrangie is offline LordRover Subscriber
    Join Date
    Jan 1970
    Location
    St Helena,Melbourne
    Posts
    16,774
    Total Downloaded
    1.13 MB
    While the belt is off give the PS pump pulley a tug and see if it moves, they walk out causing noises and shredded belts.
    MY08 TDV6 SE D3- permagrin ooh yeah
    2004 Jayco Freedom tin tent
    1998 Triumph Daytona T595
    1974 VW Kombi bus
    1958 Holden FC special sedan
    Reply With Quote Reply With Quote
  5. 24th March 2014, 08:55 PM #5
    Cammo
    Cammo is offline Master Subscriber
    Join Date
    Aug 2012
    Location
    Hunter Valley, NSW
    Posts
    244
    Total Downloaded
    0
    Thanks for all the tips
    No battery light so its still charging.... just not enjoying doing it by the sounds of things.

    I'll have a look later this week and let you know what I find
    Reply With Quote Reply With Quote
  6. 1st April 2014, 05:52 PM #6
    Cammo
    Cammo is offline Master Subscriber
    Join Date
    Aug 2012
    Location
    Hunter Valley, NSW
    Posts
    244
    Total Downloaded
    0
    Finally got around to it... dropped the belt off and horrible metallic growl coming from alternator. Pulled it out and apart: rear bearing failed. Front not healthy either. New one arrived today, along with a filter kit and belt set. So hopefully fit that lot soon. PS pump pulley seems fine.

    Cheers all.
    Cammo
    Reply With Quote Reply With Quote
« Snorkel now fitted | 93 2 door for sale gumtree »

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!