Jump to content

Restricted performance when accelerating - intermittent.


Coolcity
 Share

Recommended Posts

2 hours ago, Bigvic said:

Delete the fault codes and go for a run in the car

Some of these codes might be old, historical codes

When you’re finished your jaunt, read the codes again to see what’s still there

That's a good point, I've only got the code reader today and haven't had chance to have a proper look at it, so I'm not totally relying on those results yet. I think the brake thing is probably just a glitch, faulty sensor at worst but I'll reset that and see how it goes. 

I took it back to the original dealer I got it from this morning, but some prat had forgotten to book it in so it's going back on Friday. 70 mile round trip - no problems at all until I held back for a clear stretch of road then floored it, and sure enough the "Restricted" light came on again within a couple of seconds, with the accompanying performance hit, so it's definitely turbo related. Seems to happen from 3000 revs upwards. Driving "normally" I can drive it around all day without any problems. 

Link to comment
Share on other sites

On 9/20/2021 at 7:57 PM, Bigvic said:

Delete the fault codes and go for a run in the car

Some of these codes might be old, historical codes

When you’re finished your jaunt, read the codes again to see what’s still there

This gets even  more mysterious - I did that, and now I'm not getting any fault codes at all. 

I did find this site the other day though, which gives a run down on fault codes and possible causes. Looks quite useful. 

https://www.engine-codes.com/

 

Link to comment
Share on other sites

No, not yet - sorry I should have explained better - I wanted to get a "before" and "after" reading, so I cleared the log and did a retest before drove it anywhere. But with the service light still on I expected to get something at least. 

I'll get the "after" reading on the way to the dealers in a few hours' time so I have something to show them, assuming the fault codes show up again of course. 

Link to comment
Share on other sites

Latest update: Problem persists, but doesn't always kick in at the same time or the same revs, but is always when/after the turbo kicks in. I travelled around half a mile today after booting it, probably the farthest I've got. 

Only three error codes this time, + service light came back. 

  • P22D2 - Turbocharger turbine inlet valve stuck open
  • P22CF - Turbocharger turbine inlet valve control circuit – OPEN
  • P00BD – Mass or volume air flow A circuit range/performance – Air flow too high

Almost speaks for itself. I read a thread on a different forum from someone with near identical symptoms and he had a sticking actuator valve on the turbo (didn't say which one), though someone else simply had a faulty sensor. 

The dealer couldn't find the fault but from what I can gather all they did was tootle around town for a few minutes (despite me giving them a printed sheet with a ton of information, fault codes and when it occurs), so they've asked me to drive around for a couple of weeks and note when the problem occurs. I already know that, so I'm going to have to rearrange to go back and go out with them.  :wallbash:

At least the dealer said "Don't worry about the warranty if you can't get it back before it runs out", but I think they thought I only had 3 months - I have 6. I bet they don't know what a hassle it is to remove the turbo if it's necessary - I've read elsewhere that the steering rack has to be removed?

Link to comment
Share on other sites

No chance of that happening, but it's already been agreed: "they've asked me to drive around for a couple of weeks and note when the problem occurs. I already know that, so I'm going to have to rearrange to go back and go out with them". 

To be clear, they've said they will sort it, from my point it's just a matter of finding the time to get back and probably be without it for a couple of days. 

 

Link to comment
Share on other sites

Sorry, but with all the problems with the vehicle you should be taking the car back to the dealer and demanding you money back.....especially as it seems that the dealer is happy to keep messing you about instead of taking ownership of the problems and fixing them.

Link to comment
Share on other sites

6 hours ago, PaulT said:

Sorry, but with all the problems with the vehicle you should be taking the car back to the dealer and demanding you money back.....especially as it seems that the dealer is happy to keep messing you about instead of taking ownership of the problems and fixing them.

All the problems?  Sorry, you've lost me. 

Apart from the fact that the tyres were swapped from Dunlop to a cheap Chinese brand - which could have been because the tyres that were on it had flat spots because it had been stood for a few months - the only other issue I've had is a broken fuel filler flap, which they replaced. I did have a vibration issue at speed but that turned out to be the cheap tyres. Also the wheel balancing was way out, apparently not done correctly. 

This issue is probably something sticking open or a small crack in a pipe somewhere, nothing major. With this issue they wouldn't have found it by pottering around town for 10 minutes which is probably what they did. It's a bit inconvenient but I can understand it. I've had far worse issues over the years. 

Despite my early reservations they have taken ownership of the issues, I just think they're a little disorganised. 

Link to comment
Share on other sites

  • 3 weeks later...

Hi Coolcity.  Have you got to the fault yet?  I have exactly the same problem!  A repair was carried out under my AA warranty but it did not help.

The garage tried various other things including a repair to the plastic manifold but I picked it up today and it happened again..Having been off the road for 

3 months at the garage I am now hesitant to take it back!  I am starting to think we are all 'over thinking' this and maybe its just a partly blocked fuel filter - I

am fitting a new one tommorow.  We shall see?!

Link to comment
Share on other sites

5 hours ago, Alan Godfrey said:

Hi Coolcity.  Have you got to the fault yet?  I have exactly the same problem!  A repair was carried out under my AA warranty but it did not help.

The garage tried various other things including a repair to the plastic manifold but I picked it up today and it happened again..Having been off the road for 

3 months at the garage I am now hesitant to take it back!  I am starting to think we are all 'over thinking' this and maybe its just a partly blocked fuel filter - I

am fitting a new one tommorow.  We shall see?!

I'm sort of getting there. I've run it a few times and it's exactly the same every time - it seems as soon as the turbo fires up it goes into Restricted Performance mode. Not always at the exact same point, sometimes it will do it immediately, other times it can take a few seconds but it;'s always on hard acceleration above 3-4000 revs. 

Each time I've run a diagnostic using the iCarsoft LR v2 kit, and keep getting a mix of the ones I listed earlier, but one fault code comes up every time and today it was the only one to show: 

P22D2: Turbocharger - turbine inlet valve stuck open

(Actually to be fair there is an accompanying similar code which is almost identical, P22CF: Turbocharger - turbine inlet valve control circuit open. )

So to me it sounds like exactly what it says, a valve or something on the turbo sticking open. Makes perfect sense as it's only when the turbo kicks in that it happens. I've never thought it's anything to do with the fuel filter to be honest. Of course, I could be completely wrong but I've never thought it to be anything major. 

I've literally just emailed the dealer to see when they can fit it in again, I've been extremely busy and just haven't had the chance until now but I couldn't really leave it any longer. I have tried adding a Wynn's Turbo Cleaner to the tank but I've probably only used around a quarter of a tank of fuel since I've added it. 

looking at the car's history, I think it's been used as a local runabout for the past few years. It's never done more than 5000 miles a year and only around half that for the past 4 years so it's probably clogged up. I bet the turbo has never even been fired up for the past few years. 

  • Like 1
Link to comment
Share on other sites

18 hours ago, Alan Godfrey said:

Hi Coolcity.  Have you got to the fault yet?  I have exactly the same problem!  A repair was carried out under my AA warranty but it did not help.

The garage tried various other things including a repair to the plastic manifold but I picked it up today and it happened again..Having been off the road for 

3 months at the garage I am now hesitant to take it back!  I am starting to think we are all 'over thinking' this and maybe its just a partly blocked fuel filter - I

am fitting a new one tommorow.  We shall see?!

Very difficult or pretty much impossible to fix an air leak on the manifold

They might look plastic, but it’s some kind of composite

It should have been changed if they got that far to attempt a repair

Link to comment
Share on other sites

A late peply, I had the same problem on my x type. garage changed egr valve but no better so took it to independent jag specialist who diagnosed faulty turbo actuator. That fixed it and cured the problem. This was still ok 40k later when I sold it.

Cheers

Rod

Link to comment
Share on other sites

10 hours ago, rodeyorks said:

A late peply, I had the same problem on my x type. garage changed egr valve but no better so took it to independent jag specialist who diagnosed faulty turbo actuator. That fixed it and cured the problem. This was still ok 40k later when I sold it.

Cheers

Rod

Sounds like mine could be the same thing. Hopefully i'll be able to get it back in next week. 

Link to comment
Share on other sites

View all the latest Jaguar leasing deals here:

Limited Stock*for early 2022

*Due to the on-going semiconductor issues, the supply of new cars and vans has been dramatically hit. If you are due to change your vehicle/s in the next year or so you will NEED to start looking now to avoid disappointment or potentially being without a vehicle.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...



Forums


News


Membership