cleaned boost sensor and still shows over boost

[chowwie]

i cleaned boost sensor last night on the 2.2dci 52reg
it was preety clean with no gunk at all?

after cleaning i took a run and performance still slightly down and boosting when ever it feels

diagnosis still comes up over boosting when light comes back on the dash

only thing i noticed was a slight bubble on the yellow sensor element inside the boost sensor

is there suppose to be a slight bubble ?

the bubble is on the yellow element closest to the black flat thing in the middle

i would buy a new one tomorrow if i wnew 100% it was this at fault but at £65.00 from local dealers it would be nice to know if there is anything else that could cause over boost before buying

all pipes ok double checked

cheers all

[Gsi3.2]

overboosting..

dirty or damaged boost sensor
stuck wastegate on turbo/faulty wastegate actuator
split or perished vacumn lines leading to turbo.

[chowwie]

overboosting..

dirty or damaged boost sensor
stuck wastegate on turbo/faulty wastegate actuator
split or perished vacumn lines leading to turbo.

cheers again

i think i know where the wastegate is>>> (behind turbo with a threaded bar and nut on it for adjustment)

i will look at this to see if anything visual wrong with it

if there is only the 3 things that could cause overboost then it might be worth just buying a new actuator and pipes and sensor

cheers