Primary turbo actuator fault

[MartyJB]

It appears I have a Primary turbo actuator fault on my 2010 3.0 D4.
Dealer is saying body off and probably replace turbo as the turbo and actuator is one unit??
I'm getting the "Restricted performance" message intermittently but mainly when towing. Seems to come on when coming over a hill, so when coming off load.
Dealer has checked vacuum lines and electrical connections.
Any advice or ideas on what else to check or do prior to replacing entire turbo?
(Concerned dealer mentality is just to replace units)
Thanks in advance for your advice or moral support!

[DiscoJeffster]

Do you have the exact fault codes available?

[MartyJB]

Do you have the exact fault codes available?

No. This is advice from Dealer.
Will order an IiD tool I think.

They replaced a throttle body seal.
They did a smoke test and found no leaks.

[disco4now]

This thread is probably worth a read.


Sticky primary turbo actuator - external fix? (https://www.aulro.com/afvb/l319-discovery-3-and-4-a/176368-sticky-primary-turbo-actuator-external-fix.html)

[BobD]

I suggest taking it to Jorden Rovertech after the error has occurred an get them to have a look at the codes and the issues. They know about the turbo actuator problem (Graeme's post) and also have replaced my turbos with body on. There are many causes of restricted performance on 2010 D4's and mine has had several, which have been fixed by Rovertech, including cracked plastic manifolds and the actuator vacuum control valve issue.

The turbo replacement was not because of an actuator fault. They were noisy and when removed the compressor blades were badly bent on both turbos for reasons unknown.

[MartyJB]

Thanks for the replies.
I've pull the inner guard cover off.
The secondary turbo shut off valve looks very clean, but did feel gritty to move the valve.
I've sprayed some WD40 on the actuator arm and worked it, seems smoother,
Will take it for a run, but won't know for sure till Friday when I tow again as it's most common when towing.
If this fails will try Rovertech.

BTW I've tried another non dealer (LR specialist) in Perth but had a very bad experience hence back at the dealer. Can share details if people want to know about the "dodgy brothers!"

[BobD]

I know of at least 2 of them, one from first hand experience with my son's D1!!

[DiscoJeffster]

How to Check Your Turbo Actuator - TDV6 Range Rover Sport - YouTube (https://youtu.be/jcKpRylro50)

Check this out as a guide.

[DiscoJeffster]

If it's truly the primary turbo (LHS), then the above shows how to view the actuator moving.

[BobD]

You will find that it is moving most of the time or there would be immediate errors as soon as you drive. I had a leak in the vacuum hose between the control valve on the front right hand side of the car and the vacuum point, after the turbos were replaced, which resulted in a similar situation with restricted performance errors when accelerating after slowing down for a street junction. Once cleared, it was fine for another day until the same thing happened the next day or the next week. I suspected the actuator on the new turbo and contemplated trying to do the procedure in the earlier post to view it. However, it turned out to be the vacuum hose when it was checked again by Rovertech under the warranty for the turbo replacement and is now fixed.

[theresanothersteve]

It appears I have a Primary turbo actuator fault on my 2010 3.0 D4.
Dealer is saying body off and probably replace turbo as the turbo and actuator is one unit??
I'm getting the "Restricted performance" message intermittently but mainly when towing. Seems to come on when coming over a hill, so when coming off load.
Dealer has checked vacuum lines and electrical connections.
Any advice or ideas on what else to check or do prior to replacing entire turbo?
(Concerned dealer mentality is just to replace units)
Thanks in advance for your advice or moral support!
We had the same thing with the D3. Left it with the spanner twirler, turned out to be the MAF sensor needed cleaning.

[MartyJB]

Thanks again.
Secondary turbo actuator shut off lubricated and worked, had a good look over the vacuum hoses, but no obvious leaks.
Unfortunately the problem persists
With Vac hoses I think this would be an issue for the 2ndary turbo shut off valve opening on acceleration, which I don't have. My restricted performance comes up post mild acceleration when coasting - when cresting a hill. Failure to close of 2ndary turbo shut off valve could make sense in this scenario, however the spring shut on the valve is quite strong, but not impossible to jam/stick.
I'm struggling to understand an intermittent issue with the primary turbo actuator vane, as BobD said it's used all the time, but anything is possible.
I really need the code reader cause on top of the turbo issue I've very recently developed a judder, which I suspect may be bad fuel... too coincidental, occurring since refuelling at a remote servo....

[LRD414]

.... I really need the code reader cause on top of the turbo issue I've very recently developed a judder ....
In the interim, the fault reading and clearing capability of the iiD tool is not VIN locked.
So if you can find someone with one near you, the faults could be read etc even before getting your own.

Regards,
Scott

[DiscoJeffster]

I'm in Duncraig and have an IIDTool I'm happy to take read for you. Secondary turbo issues have very specific faults (and a long list of them typically). Anyhow, until we have the actual list of faults, it's hard to do much more.

[BobD]

I'm in Duncraig and have an IIDTool I'm happy to take read for you. Secondary turbo issues have very specific faults (and a long list of them typically). Anyhow, until we have the actual list of faults, it's hard to do much more.

I also have one if you can get to Forrestfield. You don't say where you are so difficult to know who is best placed to help.

[eddy]

I also have a IID tool you are welcome to use,so you are pretty well covered North,East and South!

[MartyJB]

Thanks guys.
I live in Carine, so Discojeffster is very close but out of town this week.
Will PM when back.

[rar110]

I'd also put through a dose of diesel induction cleaner. I've used Revive, but Moly, Penrite and other brands.

Exhaust the cheap options 1st.

[DiscoJeffster]

Fantastic. I'd love to help a fellow Disco owner. When you're ready ping me and I'll help you out.