Home > Technical (L322) > Turbo shut off valve can it be reconditioned? |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1205 |
Have you checked to see if the COSV valve is free to move? Between Rad and engine at the bottom. |
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28th May 2024 5:42pm |
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deltic Member Since: 18 Jun 2018 Location: dublin Posts: 57 |
No I haven't, is it a vacuum test |
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29th May 2024 12:14pm |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1205 |
It's difficult to get to but yes. You should also be able to move the valve 90' by hand.
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29th May 2024 12:25pm |
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Dtech Member Since: 29 Nov 2014 Location: Yorkshire Dales Posts: 48 |
The big primary turbo is variable vane, and is on the right hand side of the engine. The smaller secondary turbo on the left hand side of the engine is the one with the turbo shut off valve mounted on the back of it. This controls the exhaust flow to the turbo as required. There is a video as I recall on LR time of the guy stripping one down on his 405 which has the same turbo. But as mentioned above it could be a csov problem |
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29th May 2024 3:14pm |
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Fox889 Member Since: 04 Jun 2019 Location: Bury St Edmunds. Suffolk Posts: 683 |
Going over 2600rpm then ‘bong’ is a symptom of the CSOV being stuck. Exactly the same happened to mine, stopped, lock the car, come back in a minute & she’s fine……until the next ‘boot’.
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30th May 2024 6:39am |
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johnboyairey Member Since: 11 Jan 2013 Location: surrey Posts: 2032 |
If the tiny vacuum pipe that actuates the rod is loose, or off, it will give same symptom. It’s fed down the rear of the coolant radiator. |
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31st May 2024 6:49pm |
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