car wont hit 80mph

[jason12]

hi im new to this site i have a 1.9 tdi sx seat leon 53 plate 42 thousend miles and for a while now i have had a problem with it that problem is that it wont go above 80mph i have put it on a fault code reader being stupid i dident write the codes down.
all the things i have done to the car to try and sort this problem is

new n75 valve
cleaned the turbo vanes
new afm
new overboost sensor
checked all turbo pipes for leaks

the fault code reader says it goses in to overboost even with new sensor,
the problem comes if you are driving up a hill, on a long straight road
and its starting to do my head in . so if any one can help me please do!

[Crasher]

Can you remember if the code was 17964 or 17965? If not you will have to get it read again.

[phil miller]

hi im new to this site i have a 1.9 tdi sx seat leon 53 plate 42 thousend miles and for a while now i have had a problem with it that problem is that it wont go above 80mph

i hope that is on a private road

but knowing you as well as i do i take it to be no lol

i had to reread your post before i twigged see you in a bit mate

[jason12]

Ok I got a code it is 17965 charge pressure control deviation
P1557-35-10 intermittent any idears ???? Please help !!!!

[Crasher]

90% of the time that is a coked up turbo which will have to come off and be rebuilt.

[phil miller]

90% of the time that is a coked up turbo which will have to come off and be rebuilt.

Thats been done already and the vains are free as a bird, i cant get my head round it tbh, Jason has done the normal stuff and he took the turbo off and we cleaned it up, the movement was point on im lost as to what to look at next

[jason12]

Crasher the only thing I havent done is clean the egr out
If that was sticky would that cause the same kind
Of problem ? Because I drive along hit75-80 losses power no
Light comes on then I stop turn ignition off then on
Then it seems ok till it wants that boost now I'm stuck