audi a4 1.9 tdi boost problem

[n1ck-1]

hi I have a audi a4 (http://www.shopzilla.co.uk/rd2?t=http%3A%2F%2Fwww.bookdepository.co.uk%2FAudi-A4-and-VW-Passat-Automotive-Repair-Manual%2F9781563927034%3Fredirected%3Dtrue%26utm_m edium%3DShopzilla%26utm_campaign%3DShopzillaUk%26u tm_source%3DUK%26utm_content%3DAudi-A4-and-VW-Passat-Automotive-Repair-Manual&mid=222598&catId=13734&atom=10932&prodId=&oid=4567951111&pos=1&bId=18&bidType=0&bAmt=8e6fc9110ff780c3&cobrand=2&rf=af1&af_assettype_id=10&af_creative_id=6&af_id=11444) 1.9tdi b6 with boost proplems the turbo keeps boosting really late if atall. then the next time I use it it would run fine. I had this problem about a month ago I replaced n75 and all was fine. a month later its doing the same problem I replaced n75 valve again and air mass sensor and still no luck? and help? Thanks Nick

[adamss24]

Turbo needs a clean, best have it removed and cleaned properly...

[arman123]

Are you getting any codes does it go into limp mode?

[pete99]

Turbo needs a clean, best have it removed and cleaned properly...

Have to say this is good advice.
After 3 years of fighting with 'limp mode' and trying everything and anything to cure it -- I finally succummed to a proper clean by turbo specialists .
I wish I had taken in that advice 3 years sooner.
Turboforce in Preston lancs- did mine for £100 ish . Superfast service by nice people and honest people too. A breath of fresh air .
Audi now runs great- all day every day .

ps- I have absolutely no affiliation with Turboforce.