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Discussion Starter · #21 ·
Yes because you are familiar with the car. But it’s a guess anyway
I have just returned from my usual Jaguar specialist who have managed to retrieve the OBD error codes. They have managed to book the car in a week on Friday.. I was hoping to get it fixed before then but J-Cat are so busy

I have just updated my post if you are interested.

Thanks again for your input
 

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Discussion Starter · #22 ·
I doubt it. It's easy enough to force the top part of the air filter box up enough to pull the old filter out and push the new one in.
I have just returned from my usual Jaguar specialist who have managed to retrieve the OBD error codes. They have managed to book the car in a week on Friday.. I was hoping to get it fixed before then but J-Cat are so busy

I have just updated my post if you are interested.

Thanks again for your input
 

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Discussion Starter · #23 ·
SOLVED.

I would like to thank everyone for taking the time to give your kind suggestions and advice.

J-Cat Norwich kindly fitted my car in for repair even though they were fully booked for six to eight weeks. The car was booked in for last Friday but the AA dropped my car off at J-cat the day before. it arrived at the garage at lunchtime Thursday, I received a call from them that afternoon to say the car was fixed. a whole day early!.. What a great service..

They replaced seized turbo diverter valve and refitted trim panels removed by the local garage at a cost of £276

The car is now back to normal, all the other faults have now been cleared, apparently all the codes were down to this one fault. I have driven the car around forty or so miles with occasional foot to the floor, when the road and traffic allowed it. The car drives beautifully..

I am so pleased with J-Cat, they identified the fault and fixed it. They just know what they are doing, Professional and friendly. I trust them more than some of the jaguar main dealers.. The only downside is they are just so busy.. but that just shows how good they really are!..

Thanks again to you all..
 

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Discussion Starter · #24 ·
Hi Moonlight, what a wonderful name! If you keep the revs below approx 2,500 ish and the RP/engine light stay off, I strongly suspect the turbo changeover actuator valve on the front of the engine is stuck closed and so not changing over to the secondary turbo. This is a common problem on the 3.0D V6 engine. At least this would be a place to start examination in the absence of any diagnostic codes. If you have slim hands you may even be able to get your hands down there to try to manually move the actuator rod and maybe even free it off. It is located deep down on the front of the engine, at the junction of 3 large pipes, behind the radiator. Item 10 in the below parts diagram. Driving the car very gently and keeping the RP and engine MIL off won't damage it, but driving with the MIL illuminated may lead to clogged DPF. I suspect this issue as the car hasn't been used much and these seize up from lack of spirited use, needs to rev over 2,500 to operate. There are other common issues these engines can suffer from though, not to frighten you, but items such as split inlet manifolds and intercoolers, expensive to repair! These faults would have similar symptoms to those you describe, but different DTCs (diagnostic trouble codes). I think the recent servicing and battery charge are coincidental and do not suspect they have caused the fault.
View attachment 192709
UPDATE 20 June 2022
SOLVED.

I would like to thank everyone for taking the time to give your kind suggestions and advice.

J-Cat Norwich kindly fitted my car in for repair even though they were fully booked for six to eight weeks. The car was booked in for last Friday but the AA dropped my car off at J-cat the day before. it arrived at the garage at lunchtime Thursday, I received a call from them that afternoon to say the car was fixed. a whole day early!.. What a great service..

They replaced seized turbo diverter valve and refitted trim panels removed by the local garage at a cost of £276

The car is now back to normal, all the other faults have now been cleared, apparently all the codes were down to this one fault. I have driven the car around forty or so miles with occasional foot to the floor, when the road and traffic allowed it. The car drives beautifully..

I am so pleased with J-Cat, they identified the fault and fixed it. They just know what they are doing, Professional and friendly. I trust them more than some of the jaguar main dealers.. The only downside is they are just so busy.. but that just shows how good they really are!..

Thanks again to you all..
 

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Good news! Thanks for coming back and let us know the resolution.
 
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That is good news. And great to hear of a garage giving such a high level of service.
I have only one question: What is a "turbo diverter valve"? Is it the secondary turbo valve by any other name? (Item #5 on the attached schematic)
 

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I strongly suspect so John. Moonlight - I don't suppose J-Cat listed a part number for the part they supplied?
 
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Discussion Starter · #28 ·
That is good news. And great to hear of a garage giving such a high level of service.
I have only one question: What is a "turbo diverter valve"? Is it the secondary turbo valve by any other name? (Item #5 on the attached schematic)
Sorry I have no idea... This may or may not help?.. Turbo diverter valve part number C2C23020 Cost £70
 

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Part no. 10, as I suspected. Secondary turbo actuator as we commonly know it. Seems to have various names, as does much that Jaguar makes.
Organism Line Map Font Pattern
 
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Discussion Starter · #32 ·
Part no. 10, as I suspected. Secondary turbo actuator as we commonly know it. Seems to have various names, as does much that Jaguar makes.
View attachment 193116
Yes, you have been right all along when you said.. " turbo change over valve actuator" maybe stuck... "Compressor shut off valve" "turbo diverter valve" No wonder I was confused, three different names!.. Thanks again for all your help..
 

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Discussion Starter · #33 ·
That is good news. And great to hear of a garage giving such a high level of service.
I have only one question: What is a "turbo diverter valve"? Is it the secondary turbo valve by any other name? (Item #5 on the attached schematic)
I have used J-Cat for some years, great jaguar specialist, just difficult to get your car booked in..

Three different names for the same item!.. " turbo change over valve actuator" . "Compressor shut off valve" "turbo diverter valve"

Thanks John for all your advice..
 
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