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Thread: TD5, Surging Badly above 2700rpm......????

  1. 4th July 2009, 07:46 PM #1
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    Benny_IIA
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    TD5, Surging Badly above 2700rpm......????

    Hi Guys,


    Just got the old man’s D2 auto and when driven above about 2700 rpm. It surges badly,???

    I plugged in my nanocom it logs a fault saying.

    · EGR modulator short circuit. (will just replace witha removal kit)
    I tried changing the modulator over with one from my Defender but made no difference.


    Any ideas .

    Thanks Guys Ben
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  2. 5th July 2009, 08:53 AM #2
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    discowhite
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    too early to think about the surging but the egr fault is easy...
    step 1. remove the egr system and replace with http://www.aulro.com/afvb/verandah/8...stock-now.html.

    step 2. ignore the logged egr fault.

    limp mode wont surge, it will give you the feeling like the engine has no power...cos it wont..

    cheers phil
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  3. 5th July 2009, 10:16 AM #3
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    Thanks phil,


    Ben......
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  4. 5th July 2009, 10:45 AM #4
    Graeme
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    Whilst surging can be caused by low fuel pressure due to a failing pump, it seems that the most common cause is faulty boost control allowing excessive boost, so the ecu cuts fuel. Faulty boost can be caused by a stuck/sticky wastegate, a faulty wastegate actuator or a faulty boost modulator. If the wastegate is free to move and the actuator diaphragm isn't holed (try sucking on the pressure tube) then bypass the modulator by connecting a tube from the turbo outlet pipe (below the A/C compressor) directly to the wastegate actuator. This will provide base boost which means it will go as well as a Defender until the modulator is replaced.
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  5. 5th July 2009, 01:23 PM #5
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    scarry
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    Mine surged badly at 3000 RPM & over & it was a faulty MAF sensor.

    Could be your problem.....

    If your fender is a TD5,swap them over & see how you go.
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  6. 5th July 2009, 03:36 PM #6
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    Cheers for the help guys, turns out one of the small black hoses had a hole in it, just bypassed the boost controler(i think thats what it is, its the small black box), and just plumbed it up like my defender. Seems to run fine. I will get new hose from Repco and plumb it back in.



    Ben.....
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