2011 Vauxhall Vivaro 2.0 cdti Engine misses a beat at 3,000 revs, driving & at stand still

Vauxhall Vivaro Problem
The Problem
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shorty1905

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Engine misses a beat at 3,000 revs, driving & at stand still
Mar 15, 2018 (2 years ago)
when you rev to above 3,000 revs the engine seems to miss a beat then continues to raise, when driving it violently throws you forward. when at stand still the rev counter drops for a split second then carries on. it shows no faults on a diagnostics machine. nobody seems to know the answer or how to fix it. PLEASE HELP !!!!

Car details
Car: Vauxhall Vivaro
Variant: 2.0 cdti
Model Year: 2011
Category: Running Rough, Starting & Power Loss

Recalls: Vauxhall Vivaro Recalls
More: Vauxhall Vivaro Problems
Replies and solutions
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paulieone
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Mar 15, 2018 (2 years ago)
sounds like an EGR valve issue
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1/4drive
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Mar 15, 2018 (2 years ago)
Find someone better at diagnostics!
But given the lack of codes,
Which is only a place to start looking,
And guessing here
I'd start with turbo boost control faults,
Turbo boost pressure sensor/boost control solenoid and turbo boost control arm.
You see the thing about codes is there are only codes recoded/stored when the system detects when a parameter has been read as wrong.
It's easily possible for system faults to exist if the readings are close to right.
Close enough can be not enough.
See if you have a "Bosch" diagnostic specialist near you.
Those guys are usually well trained and equipped.
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paulieone
Fixes: 1,667
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Mar 17, 2018 (2 years ago)
get your EGR valve checked
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paulieone
Fixes: 1,667
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Mar 17, 2018 (2 years ago)
get your EGR valve checked
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