Disco 3 TDV6 shudder at certain speeds

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Car Details: 2007 2.7 TDV6

Disco 3 TDV6 shudder at certain speeds

Post by SchyffS » Mon Feb 10, 2020 2:34 pm


I have a light engine shudder, feels like an intermittent loss of power at specific speeds. First at approximately 80km/h and then again at 120km/h.
It’s similar to when there is a loss of fuel.

Vehicle starts first time from cold.
Idle does feel slightly rough both warm or cold.
My injector imbalance are all in spec on idle (above 900) when warmed up and they all even out at 1000 during driving.
I have replaced the oil temperature sensor.
I have cleaned both the MAP AND MAF sensors.

On startup idle:


Engine warmed up and idling:



Any advise on fuel pump voltages and pressures?
What can the fault be?

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Last edited by SchyffS on Mon Feb 10, 2020 2:34 pm, edited 4 times in total.

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Re: Disco 3 TDV6 shudder at certain speeds

Post by anglefire » Thu Feb 13, 2020 7:06 pm

Firstly, I would say 900 was a little low - and 1000 when driving is normal - the readings mean nothing above idle.

But you really need someone like Bodsy as he has a lot more experience and knowledge.


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