I too took my catch can off about 2 months ago.
I noticed more smoke, the engine was always covered in a layer of oil (open catch can system) and it all looked very chavvy under the bonnet.
I noticed more smoke, the engine was always covered in a layer of oil (open catch can system) and it all looked very chavvy under the bonnet.
Car has been fixed!
Faulty n75 valve was the culprit. The n75 valve has been dieing a slow horrible death for some time now but was apparent before because the ECU has been adapting to control the fueling and boost levels. As the n75 started to fail more this is when I had smoking and running issues until the ECU thought "feck this the n75 isn’t working at all" and gone into limp mode. When the n75 failed it caused strange scraping noises as the car was massively overfueling and overboosting hence made me think the turbo has gone as the turbo was receiving 40PSI+ and not knowing what the hell to do with it.
Replaced n75 valve and she is running like a dream. In Steve’s own words "pulling very very strongly". The catch tank was not at fault however he has left it disconnected to the ECU can adapt to normal operation for a week. Next week I will either refit it myself or take the car back for it to be fitted again.
Faulty n75 valve was the culprit. The n75 valve has been dieing a slow horrible death for some time now but was apparent before because the ECU has been adapting to control the fueling and boost levels. As the n75 started to fail more this is when I had smoking and running issues until the ECU thought "feck this the n75 isn’t working at all" and gone into limp mode. When the n75 failed it caused strange scraping noises as the car was massively overfueling and overboosting hence made me think the turbo has gone as the turbo was receiving 40PSI+ and not knowing what the hell to do with it.
Replaced n75 valve and she is running like a dream. In Steve’s own words "pulling very very strongly". The catch tank was not at fault however he has left it disconnected to the ECU can adapt to normal operation for a week. Next week I will either refit it myself or take the car back for it to be fitted again.
Last edited:
brad1
Guest
good news mate, bet your kind of glad in a way really, so you still going for the hybrid or going to put it off for a while now?
It is good news. The idea of 245BHP is immense however having just spent 2.5k on the car recently I would rather not do the turbo. I will be going big turbo in the summer period however still got a few mods to do first!
Cheers Tom, appreciate your kind words.
Wont get the TD2 just yet. Planning to in the summer, got a few mods to do still.
Too much pressure coming in, not enough pressure going out = oil blowing past the oil seals. What you need is 19mm in and out and hoses of at least that size. Mine is still removed and will be for the forseeable. I jus don't have space to fit the one i do have with the correct diameter pipes.
Yea I know mate, AmD been really cool about it and really are looking at the car. Just fustrating as I havent really touched the car now for ages.
Cheers pat
Yea I know mate, AmD been really cool about it and really are looking at the car. Just fustrating as I havent really touched the car now for ages.
Cheers pat
Other thing you have to remember is eventually any kind of filter will block - enough space for the mixture to enter the tank under pressure, separate and then allow the fumes to escape. I don't think that can happen in a normal 'small' tank - this is probably why the Mann Hummel has a pressure relief valve fitted to it.
Good news the turbo isn't dead - mine has started to sound like a police siren in the mornings of late, think it's just the cold ........ i hope
I suppose it would hurt to replace the N75 valve and the MAFF on a regular basis really considering the costs involved. Almost service items - say every five years if not required sooner 
Anyway you'll be so in love when you get the car back. Absence as they say....
Should be running spot on.
Anyway you'll be so in love when you get the car back. Absence as they say....
Should be running spot on.
http://htdig.honestjohn.co.uk/forum/post/index.htm?t=58868
Boost pressure sensor - yours is on the fat turbo hose that comes up next to your oil filter . It screws in, is yours a flush fit when you push it in or does it just fall out without the screws in>?
Boost pressure sensor - yours is on the fat turbo hose that comes up next to your oil filter . It screws in, is yours a flush fit when you push it in or does it just fall out without the screws in>?
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