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911uk

x50 turbo juddering.

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHx50 turbo juddering.

Reported or suspected cause

maf sesnor and a dump valve ng

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
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Reported fixes
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Discussions that report identifying a cause
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Reported cause · Original poster

The problem was the MAF sesnor and a dump valve ng!

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x50 turbo juddering.
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Leading evidence: 'maf sesnor and a dump valve ng' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'maf sesnor and a dump valve ng' (1 discussions; 1 report identifying it and 0 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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1 matching discussions · 5 captured posts examined · 0 partial discussions

Reported and suspected causes (1)

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maf sesnor and a dump valve ng

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Reported cause · Original poster

The problem was the MAF sesnor and a dump valve ng!

Original post Read captured discussion
x50 turbo juddering.
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have just had the lhs turbo overhauled was working ok. But today it just woulnt drive very well, under accelleration it judders and doesnt seem to have much power. There are no fault codes from the cpu. Anyone got any ideah what might be wrong with it? i did find a hose had come off the dump valve but corrected these and it is still the same.

POST 2Original post

sounds like its misfiring, probably coils packs and or plugs, had it on mine recently and found it had toasted 4 coil packs

POST 3 / ORIGINAL POSTEROriginal post

would coil packs not make a fault code in the ecu, also on tick over and when reving the engine when not in gear it sounds fine.

POST 4Original post

Depends how bad the misfire is before the ECU light comes on, when you get it plugged in there may be fault codes on an engine bank, your symptoms are exactly the same as what i had ie, idle fine, low revs fine, but put it under load and the misfire from the rear of the car causes a judder

POST 5 / ORIGINAL POSTEROriginal post

The problem was the MAF sesnor and a dump valve ng!

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