I have a 2011 4.4 TDV8 and it keeps going into restricted performance when I accelerate hard and 2 turbo cuts in and then I ease off accelerator. The fault code says Turbo Actuator stuck open. I am looking at getting it to a garage that can do a Power Clean on it to hopefully cure problem.
I am wanting to know will the Power Clean which is connected to fuel line get into 2nd Turbo on tickover or will it have to be Reved above 2500 rpm to open the 2nd turbo up or does the exhaust gases Pas through the 2nd turbo all the time.

Any advice would very much appreciated.

Regards Martin Current Range Rover Vogue SE 2011 4.4 TDV8

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2003 Range Rover Vogue SE
1997 Range Rover DSE
1990 Range Rover Vogue SE
1985 Range Rover 2 Door
1979 Land Rover Series 3

I understand you need to drive it to open 2nd turbo up, revving when stationary won’t do it.

More knowledgeable folk might have more useful info.....

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

I suspect that the change-over valve is sticking. A redesigned valve was introduced early 2012 to overcome sticking due to external grit etc. The valve can be seen looking down behind the radiator slightly towards the left side of the car. Pictures in other threads show the different external linkages which changed from an enclosed joint for the arm attached to the butterfly bracket to an open-topped joint of much larger diameter.

As Graham said likely to be changeover valve, the turbo spins the whole time, the air is just constantly recycled back through that turbo until the changeover valve opens at higher rpm.

Is the 2nd turbo not fixed? Cheers

James

The original has got the nut on top and the later modified valve has no nut.

Click image to enlarge

Click image to enlarge

Thanks everyone for your responses, I really appreciate it, I will check out the changeover valve, I wasn't sure how the system works, I just presumed it had two variable vane turbochargers one small and one larger one.

Thanks again Martin 👍 Current Range Rover Vogue SE 2011 4.4 TDV8

Previous

2003 Range Rover Vogue SE
1997 Range Rover DSE
1990 Range Rover Vogue SE
1985 Range Rover 2 Door
1979 Land Rover Series 3