Results 1 to 7 of 7

Thread: wierd tacho behaviour TD5 auto...

  1. 16th March 2013, 05:38 PM #1
    Alex 110's Avatar
    Alex 110
    Alex 110 is offline Master
    Join Date
    Dec 2011
    Location
    sydney - pining for the western desert
    Posts
    444
    Total Downloaded
    0

    wierd tacho behaviour TD5 auto...

    At speeds of around 80-90, in fourth under load, the tacho needle is continually hunting up & down by around 100-300rpm.
    I've attached a short video of the dashboard while this is happening so you can see what I see.
    It only does it in 4th. the next time I drove the same route with the same load as when I took the video I set the auto to "Sport" so it kicked down to 3rd (& around 3500rpm) at the point where in 4th this was occurring, and the hunting didn't happen.
    Its not the MAF as its brand new - what else do I need to look at?
    TIA
    Alex
    Attached Files Attached Files
    Reply With Quote Reply With Quote
  2. 16th March 2013, 06:12 PM #2
    OffTrack's Avatar
    OffTrack
    OffTrack is offline YarnMaster
    Join Date
    Feb 2011
    Location
    Brunswick, Victoria
    Posts
    3,778
    Total Downloaded
    0

    wierd tacho behaviour TD5 auto...

    Are the revs actually hunting or is it purely a issue with what the tachometer is displaying. You'd probably want to use a diagnostic tool to monitor the revs the ECU is outputting. That would narrow down the issue to either ecu or instrument panel.
    Reply With Quote Reply With Quote
  3. 16th March 2013, 07:14 PM #3
    gavinwibrow's Avatar
    gavinwibrow
    gavinwibrow is offline YarnMaster Silver Subscriber
    Join Date
    Oct 2011
    Location
    Fremantle WA
    Posts
    3,839
    Total Downloaded
    0
    Long shot, but given its at just over 80 km in 4th - could it be related to the lockout?
    D4 MY16 TDV6 - Cambo towing magic, Traxide Batteries, X Lifter, GAP ID Tool, Snorkel, Mitch Hitch, Clearview Mirrors, F&R Dashcams, CB
    RRC MY95 LSE Vogue Softdash "Bessie" with MY99 TD5 and 4HP24 transplants
    SADLY SOLD MY04 D2a TD5 auto and MY10 D4 2.7 both with lots of goodies
    Reply With Quote Reply With Quote
  4. 16th March 2013, 07:33 PM #4
    Alex 110's Avatar
    Alex 110
    Alex 110 is offline Master
    Join Date
    Dec 2011
    Location
    sydney - pining for the western desert
    Posts
    444
    Total Downloaded
    0
    Quote Originally Posted by OffTrack View Post
    Are the revs actually hunting or is it purely a issue with what the tachometer is displaying. You'd probably want to use a diagnostic tool to monitor the revs the ECU is outputting. That would narrow down the issue to either ecu or instrument panel.
    Without easy access to a nanocom or similar all I can say is that it feels down on power & hesitant when it happens which makes me think the tacho is reading true & the revs really are doing something strange
    Alex
    Reply With Quote Reply With Quote
  5. 17th March 2013, 10:15 AM #5
    Alex 110's Avatar
    Alex 110
    Alex 110 is offline Master
    Join Date
    Dec 2011
    Location
    sydney - pining for the western desert
    Posts
    444
    Total Downloaded
    0
    Quote Originally Posted by gavinwibrow View Post
    Long shot, but given its at just over 80 km in 4th - could it be related to the lockout?
    do you mean the torque converter lock?
    If so, this could be it - if the torque converter was locking & unlocking over & over again?
    Reply With Quote Reply With Quote
  6. 17th March 2013, 11:18 AM #6
    gavinwibrow's Avatar
    gavinwibrow
    gavinwibrow is offline YarnMaster Silver Subscriber
    Join Date
    Oct 2011
    Location
    Fremantle WA
    Posts
    3,839
    Total Downloaded
    0
    Quote Originally Posted by Alex 110 View Post
    do you mean the torque converter lock?
    If so, this could be it - if the torque converter was locking & unlocking over & over again?
    Yep - that's what I'm querying. Good luck!
    D4 MY16 TDV6 - Cambo towing magic, Traxide Batteries, X Lifter, GAP ID Tool, Snorkel, Mitch Hitch, Clearview Mirrors, F&R Dashcams, CB
    RRC MY95 LSE Vogue Softdash "Bessie" with MY99 TD5 and 4HP24 transplants
    SADLY SOLD MY04 D2a TD5 auto and MY10 D4 2.7 both with lots of goodies
    Reply With Quote Reply With Quote
  7. 17th March 2013, 11:25 AM #7
    boldy
    boldy is offline Member
    Join Date
    Oct 2012
    Location
    melbourne australia
    Posts
    4
    Total Downloaded
    0

    boldy

    Hi, have a look at the connections on the back of your alternator, that what was cauing the problem on mine
    Reply With Quote Reply With Quote
« Strange sequence of faults | What should I do to my disco next.... »

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!