406 sri - No Boost?
mr_david_sir
03-15-2005, 01:07 PM
I have just bought a 1997 P406 sri (2.0 Turbo petrol)
It goes really well... most of the time. BUT sometimes its like there is no boost. The dump valve works properly, as in shuts when the vacuum from the intake manifold is lost.
The boost will suddenly return, usually when I least expect it.
It drives like a naturally aspirated 2.0 without the turbo working. My father has the same model as me, and his does the same occasionally. Infact, today, which made us look deeper into the problem, but still no result.
Can anyone help? Pwweeeeeze... I pay £1600 to insure it, so I want it to go as it should!!! ;) (Yes 1600!!!)
Cheers, Dave
It goes really well... most of the time. BUT sometimes its like there is no boost. The dump valve works properly, as in shuts when the vacuum from the intake manifold is lost.
The boost will suddenly return, usually when I least expect it.
It drives like a naturally aspirated 2.0 without the turbo working. My father has the same model as me, and his does the same occasionally. Infact, today, which made us look deeper into the problem, but still no result.
Can anyone help? Pwweeeeeze... I pay £1600 to insure it, so I want it to go as it should!!! ;) (Yes 1600!!!)
Cheers, Dave
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