Audi A4 1.9 TDI (1999) - power loss...limp mode?

[trickyfocus]

Were do i buy the tube from .... there are two types, The braded tube and plastic..... and what sizes do i ask for .... and the clips to fit thanx in advance ......

[James hbq]

what tube are u referring to?

[Mantas Morkunas]

I have simular problem with 2001 b5 tdi 90 bhp. After remap i

[Mantas Morkunas]

I have simular problem with 2001 b5 1.9 tdi 90 bhp, after a remap it goes into limp mode ONLY when maintaining same speed for 10-15 mins, after it happens first time then its a matter of seconds till it goes into limp mode again after I restart engine, during a 60mile trip everyday it cuts out 10 or more times but not when accelerating or 3k rpm but when deaccelerating or maintaining speed, otherwise pulls really good in all gears and at any rpm and as soon as I deaccelerate turbo cuts out, (note most vacum pipes replaced even tho they were good, new n75 and no faults on VAG only underboost fault after it cuts out, turbo cleaned manifold cleaned, actuator moves freely.)

[Hjhutti]

hi all.

sorry to tag along but I have a 2008 Audi A4 (Diesel auto) - have replaced so many things - Turbo, N75, Map, Mas sensor, removed dpf, blanked EGR & remap. seems fine locally but struggles up hill on motorway & "glow plug" warning comes on - underboost. after switching off engine its ok. checked all pipes (by eye) as have replaced a few. on depressing accelerator large pipe (vacuum pipe) fills up (expands) which looks like doing what it should. any ideas please as I have hit a brick wall. thanks Harry

[VAG-Abound]

It's a pain isn't it ?

Was it a new turbo, or did they recondition the existing one? Rough cost, as a guide to if they perhaps really did replace it and if so with what? Were the air side pipes checked as well?

[Hjhutti]

hi, reconditioned turbo. was an exchange so dropped one off & picked up the old one. not sure air side pipes - what are they?

[VAG-Abound]

I just meant the pipework from air filter to turbo, then through intercooler to engine intake. Making sure it is connected and reasonably leak free so that sensors don't get confused.