Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Discovery 2 TD5...Performance issues...

  1. 7th September 2018, 05:33 PM #1
    Kent_P
    Kent_P is offline Fossicker
    Join Date
    Sep 2017
    Location
    Australia
    Posts
    39
    Total Downloaded
    0

    Discovery 2 TD5...Performance issues...

    Hi again,


    I am writing for some advice regarding my 2001 TD5 Auto with 310km and its performance...or lack there of at times.


    My issue is that when taking off from a standing start, the car doesn't want to do anything. I mean, it moves forward but you can actively count out the seconds before the turbo kicks in and then it starts moving with some gusto. It doesn't really want to do anything until about 1900 RPM.

    The issue is more so when the car is not fully warmed up but does also do it when up to operating temperature.

    I have recently replaced the whole turbo unit as well as the MAF sensor with little avail. The turbo certainly pulls a bit harder in the mid range about 2500-3000 RPM but that's it.

    I'm ok with it because it has been this way for as long as I can remember but poses a safety issue for those who drive the car but not as regularly as myself and whom understands it's 'quirks' if you will.

    I also understand that it might just be a TD5 thing as they are not power houses but still.

    Just putting it forward, I'm not interested in tuning it as for my applications, it doesn't require it.

    Any ideas and information would be greatly appreciated by those more 'accustomed'.

    Thank you very much.
    Reply With Quote Reply With Quote
  2. 7th September 2018, 06:03 PM #2
    lyhoon94
    lyhoon94 is offline Master
    Join Date
    Jan 2017
    Location
    Thornlie 6108
    Posts
    138
    Total Downloaded
    0
    Following with interest.

    Have you tested the boost modulator? And what condition are all the vacuum lines in?

    I think I was chasing a similar problem until I got frustrated and decided to let future me deal with it. I experienced what you described when I switch the ignition on and drive. I specify this as, from a stand still at the lights, I feel it pulls well from get go however if I were to pull over and switch it off then back on, I can count the seconds before the turbo kicks in as well.
    Reply With Quote Reply With Quote
  3. 7th September 2018, 06:27 PM #3
    Kent_P
    Kent_P is offline Fossicker
    Join Date
    Sep 2017
    Location
    Australia
    Posts
    39
    Total Downloaded
    0
    Quote Originally Posted by lyhoon94 View Post
    Following with interest.

    Have you tested the boost modulator? And what condition are all the vacuum lines in?

    I think I was chasing a similar problem until I got frustrated and decided to let future me deal with it. I experienced what you described when I switch the ignition on and drive. I specify this as, from a stand still at the lights, I feel it pulls well from get go however if I were to pull over and switch it off then back on, I can count the seconds before the turbo kicks in as well.
    Boost modulator was removed and inspected when the new turbo was installed.

    Same for the turbo lines to the intercooler and intake manifold.

    Same for the vacuum lines.

    Nil defects present.

    So it leads me to believe they are still in a serviceable condition.
    Reply With Quote Reply With Quote
  4. 7th September 2018, 06:53 PM #4
    V8Ian's Avatar
    V8Ian
    V8Ian is online now Super Moderator
    Join Date
    Dec 2007
    Location
    Back down the hill.
    Posts
    29,778
    Total Downloaded
    0
    Seems to be running as designed. Pedro will be sniggering about now.
    If you don't like trucks, stop buying stuff.
    http://www.aulro.com/afvb/signaturepics/sigpic20865_1.gif
    Reply With Quote Reply With Quote
  5. 7th September 2018, 07:04 PM #5
    rick130's Avatar
    rick130
    rick130 is offline Moderator Gold Subscriber
    Join Date
    Jan 1970
    Location
    NSW far north coast
    Posts
    17,285
    Total Downloaded
    0
    Quote Originally Posted by V8Ian View Post
    Seems to be running as designed. Pedro will be sniggering about now.
    Remind me again Ian, how many km to the tank do you V8 fellas get ? Discovery 2 TD5...Performance issues...
    Reply With Quote Reply With Quote
  6. 7th September 2018, 07:11 PM #6
    V8Ian's Avatar
    V8Ian
    V8Ian is online now Super Moderator
    Join Date
    Dec 2007
    Location
    Back down the hill.
    Posts
    29,778
    Total Downloaded
    0
    Quote Originally Posted by rick130 View Post
    Remind me again Ian, how many km to the tank do you V8 fellas get ? Discovery 2 TD5...Performance issues...
    Should I change my name to Inline5Ian? It seems to lack the same ring.
    If you don't like trucks, stop buying stuff.
    http://www.aulro.com/afvb/signaturepics/sigpic20865_1.gif
    Reply With Quote Reply With Quote
  7. 7th September 2018, 08:22 PM #7
    rick130's Avatar
    rick130
    rick130 is offline Moderator Gold Subscriber
    Join Date
    Jan 1970
    Location
    NSW far north coast
    Posts
    17,285
    Total Downloaded
    0
    Discovery 2 TD5...Performance issues...
    Reply With Quote Reply With Quote
  8. 8th September 2018, 08:54 AM #8
    lyonsy
    lyonsy is offline Master
    Join Date
    May 2009
    Location
    wimmera
    Posts
    503
    Total Downloaded
    0
    its a turbo diesel they need boost move, if you want more low down fit a Variable vane turbo so the turbo will spool sooner.
    or a fit a chev ls3
    Reply With Quote Reply With Quote
  9. 8th September 2018, 09:35 AM #9
    donh54's Avatar
    donh54
    donh54 is offline Wizard Subscriber
    Join Date
    Mar 2007
    Location
    Warwick Qld
    Posts
    1,977
    Total Downloaded
    0
    Try disconnecting the boost modulator completely. They are designed to "smooth" things out for the autos, manual Deefers don't have them.
    Even with a split hose to the intercooler, mine was no worse on acceleration than the 300 Tdi in my D1.
    -----
    You have the right to remain silent. Anything you say will be misquoted, then used against you.
    -----

    1999 Disco TD5 ("Bluey")
    1996 Disco 300 TDi ("Slo-Mo")
    1995 P38A 4.6 HSE ("The Limo")
    1966 No 5 Trailer (ARN 173 075) soon to be camper
    -----
    Reply With Quote Reply With Quote
  10. 8th September 2018, 04:03 PM #10
    sierrafery's Avatar
    sierrafery
    sierrafery is offline YarnMaster Silver Subscriber
    Join Date
    Jul 2014
    Location
    west of Transylvania
    Posts
    3,783
    Total Downloaded
    0
    The real thing would be to save a live data log with nanocom to see all sensor's inputs... untill then inspect the MAP sensor to not be gunked up especially if the EGR is still there... and check fuse F2 in the engine bay fusebox to make sure it's not blown
    Discovery Td5 (2000), manual, tuned
    Reply With Quote Reply With Quote
Page 1 of 2 12 LastLast
« Rewire D2 TD5 Aux Battery | Viscous fan »

Tags for this Thread

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!