So now you know what needs fixing.

 

well, i thought there are some professional people here who can give some good advice or get you close to resolve the problem, otherwise everyone knows when car has problem we should fix it !

 

The codes tell you simply which system has a fault which might encompass several components, wiring looms, switches and connectors. The next step is to push away from the keyboard and open the hood to start testing. That's what the professionals do.

If you are not satisfied with this FREE advice, please write one of the moderators asking for a full refund of your membership fees.

 

OBD provides hint(s). If you can't or won't take the hint(s) (such as by keeping clearing them) then you need a tech who does.

 

1602, most turbos can pump more air than required by the engine when running at maximum boost. To avoid engine damage due to excessive boost pressure, devices such as boost control solenoids, wastegate bypasses and, maybe as you say, rotary actuators swing into action as the boost pressure begins to approach the engine manufacturers prescribed limit.

These devices are usually attached to, rather than built into, the turbos, so can usually be removed, serviced/replaced and re-attached. It might just be your bad luck that the turbo and actuator in your Jag are all one unit. I don't know.

In any event, no Jag dealer is going to attach/fit a new actuator to a 10-year-old turbo and give you a warranty. That's a job for you or a friendly, knowledgable indie.

 

P0046 is never good news on an S-Type 2.7 diesel.

In order of cost, the possible causes are:

1. air leak(s)
2. turbo boost solenoid sticking
3. turbo on the way out

 

The whole point of Jaguar forum is to get some helpful advice short of taking it for expensive repairs. If every time something went wrong with the car the advice was to "take it to someone who knows" or similar then there would be no need for this forum.
So someone needs to direct 1602 to a site that shows the gifted amateur mechanic how to fix the "turbo boost" problem. The turbos are accessable from below the car with some patience and aptitude.

 

Almost everyone here is in USA/Canada, where the diesel S-Type was never sold. Probably no-one has any idea of a forum such as you mention. If you do then why not post it?

BTW, 6 weeks with no such posts says it all.........

 

Thanks for your valuable contribution. I don't think the OP was on the same page you as he didn't seem to quite understand that there a system that needed to be fixed.

Horse, water, something something.

 

1602, I hope by now you have located the funding and technical resources to have your turbo problem fixed. Please let us know.

This was your very first series of posts, so welcome to the forum - I am sorry you were not able to get a definitive answer to P0046, but there's little knowledge of the 2.7D over here. Some of the answers...

Maybe the best:

P0046 is never good news on a 2.7D. In order of cost, the possible causes are:
1. air leak(s)
2. turbo boost solenoid sticking
3. turbo on the way out

...and another:

Take the car to someone who knows the jag 2.7D intimately and be sure to tell them what you've done so far so they can work out what to do next.

...and one that I disagree with, as Google often refers to the Jag forum, and instantly pointed to your problem:

Google can find almost any random, possibly wrong or misleading, info. It's not a tool for such a hi-tech engine.

...and a bit of technical info:
The turbos are accessable from below the car with some patience and aptitude.

...and lest we forget:
The whole point of Jaguar forum is to get some helpful advice short of taking it for expensive repairs.

...and a nice cheerful welcome to a new member:

If you are not satisfied with this FREE advice, please write one of the moderators asking for a full refund of your membership fees.

 

The OP has not been back since July 13 2015 as apparently we as a group 'let him down' despite the obvious valiant attempts to the contrary.

Can't win 'em all.

 

The O/P was a non-technical newbie who was looking to the forum for advice he could understand. Nothing too different about that.

He posted 10 polite entries in just a few days, and we as a group were slowly, gently but surely making progress with his knowledge and awareness. His last post on July 13th was immediately followed by your advice to leave the forum.

 

Maybe it was the advice to 'use Google' that put him over the edge once he read JagV8's response to the idea and thought about it. That's just about as offensive and non-productive a suggestion as posting RTFM or LMGTFY.

 

It would be nice to think he finally understood the straightforward advice to take it to somewhere competent to fix it. His choice seemed to be to continue to abuse an expensive car, so maybe he destroyed it. I doubt he'll bother to post what he chose to do or what the result was but you never know he may have decent manners after all.

 

I don't see any evidence of the O/P exhibiting bad manners, quite the opposite.

I did see that Google pointed directly to a turbo problem while everyone else up to that time was saying "no 2.7D vehicles here, we don't have a clue, get it fixed". The O/P's question was "get what fixed?

And I saw a senior forum official being unnecessarily rude to a brand new member asking for help.

Great stuff.

 

Re-read the thread, you're not correctly characterising what people said.

 

Umm, OK. Where I come from such comments are usually considered bad manners. The answers given to that point actually met or exceeded any reasonable expectations. Even if they didn't, it's never a good idea bite the hand that feeds you.

 

So much bull*hit. We did win, after all, because the O/P took that ill-mannered advice and will likely walk away. The forum has been cleansed. Way to go.

 

I really cannot read the advice he was given the negative way you do. I cannot understand why you take your view. I can see he was resistant to taking any of the good advice he was freely offered.

 

The P0046 DTC that 1602 had sounds like an electrical problem with the turbo possibly with the turbo boost solenoid. This I gather from reading around the subject.
In the first instance cleaning the electrical connectors to the turbo would be a good start. Then if the problem persists (and you have the time) I'd take off one of the turbos, dismantle it and clean it thoroughly especially the area of the solenoid travel. If that doesn't work then do the other one. If still problems I'd take it to a good sensible indie who you can talk to and where you can walk into the workshop to look at the progress of the work and learn something in the process.