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Thread: Disco td5 turbo overcharging

  1. 19th March 2009, 06:09 PM #1
    optimax90's Avatar
    optimax90
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    Disco td5 turbo overcharging

    my 2001 disco td5 auto wont take anymore than half throttle, then starts to rapidly surge.Nanocom says turbo overcharging.Anyone know what causes a turbo to do this and or what sensor is involved???
    1961 series 2 swb
    1978 series 3 ex army gs
    2001 series 2 discovery td5
    2015 tdv6 3.0 d4
    1990 perentie gs cargo with winch.
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  2. 19th March 2009, 06:51 PM #2
    slug_burner
    slug_burner is offline TopicToaster Gold Subscriber
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    MAP sensor Manifold Air Pressure.

    Could also be the wastegate modulator.

    Check to see that you have not got a sticky waste gate.
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  3. 19th March 2009, 09:34 PM #3
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    optimax90
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    Shouldnt there be a code for the map sensor if it was faulty?
    1961 series 2 swb
    1978 series 3 ex army gs
    2001 series 2 discovery td5
    2015 tdv6 3.0 d4
    1990 perentie gs cargo with winch.
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  4. 20th March 2009, 12:09 AM #4
    Tombie Guest
    Quote Originally Posted by optimax90 View Post
    Shouldnt there be a code for the map sensor if it was faulty?
    Nope!!!

    But sounds so much like delaminated turbo hoses!

    There are a few possible causes...

    Above is most likely...

    Then...
    Stuck Wastegate
    MAF
    Wastegate modulator
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  5. 20th March 2009, 06:28 AM #5
    fraser130
    fraser130 is offline Wizard
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    My Dad's car (D2) did the same thing, turned out to be the hose to the wastegate modulator had dropped off as it had no clamp on it.

    Fraser

    P.S Thanks Tombie for the Map, one very happy chappy here!
    Did you get my last email (EGR thingy)?
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  6. 20th March 2009, 08:29 AM #6
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    have removed and checked all turbo hoses.removed and cleaned map sensor.
    wastegate hoses seem ok.Replaced air filter.Still surging realy bad???
    1961 series 2 swb
    1978 series 3 ex army gs
    2001 series 2 discovery td5
    2015 tdv6 3.0 d4
    1990 perentie gs cargo with winch.
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  7. 20th March 2009, 10:51 AM #7
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    optimax90
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    can the wastegate modulator be bypassed.Have heard that defender doesnt have one.Where does the wastegate pipe on defender run to.?
    1961 series 2 swb
    1978 series 3 ex army gs
    2001 series 2 discovery td5
    2015 tdv6 3.0 d4
    1990 perentie gs cargo with winch.
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  8. 20th March 2009, 09:06 PM #8
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    optimax90
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    problem solved
    bypassed the modulator now ruuning sweet again
    1961 series 2 swb
    1978 series 3 ex army gs
    2001 series 2 discovery td5
    2015 tdv6 3.0 d4
    1990 perentie gs cargo with winch.
    Reply With Quote Reply With Quote
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