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my car is loosing all power at 2500rpm why?

my car is loosing all power at 2500rpm nothing at all after it only upto 3rd but still very slow building speed after that
pat coyne, November 2009
oh it had never done this before the service

pat coyne, November 2009
it was serviced on thursday n had ta anti/rool bar sushins done to also my cruise controle is not workin im puttin that down to ta lack of power rite?

pat coyne, November 2009
This might be something i had worth a quick check.
Check your air filter pipe it might have a split in it , when the pressure builds up pushes the air out of the pipe and you will loose the power.
hopefully its this as its a quick fix

andy, November 2009
First check all the air and vacuum pipes, especially those to the turbo.
Make sure the engine oil level is correct ( wrong level will affect the vac pump).
Possibly choked exhaust, dirty air and/or fuel filter, sticky/failed turbo. When was it last serviced?
Faulty air flow meter is quite common on these too.

laguna, November 2009
sorry i forgot to say it's a 03 vectra 2.0 dti

pat coyne, November 2009