GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Golf mk4 TDI => Topic started by: vw-8v on 20 February 2011, 16:58

Title: n75? replce with same part number or can it b changed
Post by: vw-8v on 20 February 2011, 16:58
i noticed on several threads that people put different n75 into thier car

is it easy job?

and if i have done the egr delete i'm guessing the n75 controls the boot to the turbo? right or wrong? as i will replace this next if the info is good as after that it got to be the actuator on the turbo that is sticking hence limp mode  comming and going
so it need to be a take off job and send to r tch for cleaning or new turbo?

or could i replace turbo my self or actuator as i have read u can get a forge part which is stronger lol lots of option so just after opinion and info

cheers
Title: Re: n75? replce with same part number or can it b changed
Post by: Rhyso on 20 February 2011, 21:32
What TDI you got?  :huh:

People with early 110's and 115's put the N75 in from the 130's and 150's; helps smooth the boost apparently

N75 opens and closes the turbo vanes

Best bet is to replace the actuator with a standard item.  i tried the Forge but you need the corresponding spring to get it working correctly.  I did a full write up of it which you can find in my project thread

Turbo can be cleaned with the Innotec stuff but looking at some recent pictures it doesn't clean as well as first thought.  Safer bet is to remove the turbo and strip and clean
Title: Re: n75? replce with same part number or can it b changed
Post by: vw-8v on 20 February 2011, 22:05
ok so first i wil try get a 130 n75 to put on my pd100 i'm assuming it will be accepted by the ecu?

second i was going to get that innotec stuff and get a boost leak test done (all depending on funds)

if all is useless then it a new turbo or actuator i spoke to vw and they dont sell individual parts i remember from a very old post about this.

how much am i looking at for someone to take out turbo and fit new vane and put bk in? as i may have a way of getting a brand new turbo from vw for less than 400 quid then just need to fit it (is it hard?) or get some one to do it? so how much roughly?

as if it almost as much to replace the actuator as hole job in out etc i might have to bite the vbullet and get a new turbo.

oh and off topic am i right in understanding that u can reset the base protocols or info on an abs ecu  as one i got had correct pump but diff ecu hence esp not working now(different prob lol)
Title: Re: n75? replce with same part number or can it b changed
Post by: Rhyso on 20 February 2011, 22:08
PD 100 might have the latest revision anyway  :undecided:

Turbo Technics sells the actuator separately - well they did last year when I had one from them  :smiley:

You don't fit new vanes as such, just remove and clean all the crap out of it.  There's some pics on ukmkivs by old_no7 showing how he stripped and cleaned it.  PM him on here if you're not a member :afro:

Think R-Tech charge around £250 to do that

Can't help about the ABS problem
Title: Re: n75? replce with same part number or can it b changed
Post by: vw-8v on 20 February 2011, 22:13
so is that 250 taking the turbo out and reinstalling it?

 and if i gave them the replacement part would they just fit that as they clean the turbo? lol i'm a 6 hr drive from them but there the only ones i think do a turbo clean

i'm guessing a turbo out and back in is a bit of a job on a driveway then?

as ever thanks  for the info rhyso lol u got me sorted on a couple probs so far.
Title: Re: n75? replce with same part number or can it b changed
Post by: Rhyso on 20 February 2011, 22:19
As far as I know yes that includes removal, clean and refit

A few people have done it on their drives / garage but its an awkward fiddly job  :sad:

Replacement part? You mean the actuator?  They could supply and fit it but the problem you'll have is that you then need it setup correctly otherwise you won't be any further forward and could end your turbo's life prematurely

No worries mate.  That's what the forum is for  :smiley:
Title: Re: n75? replce with same part number or can it b changed
Post by: old_n07 on 21 February 2011, 20:25

A few people have done it on their drives / garage but its an awkward fiddly job  :sad:


Oh no it isn't!!........  :grin: :smug:

How much was the actuator from TT?
Title: Re: n75? replce with same part number or can it b changed
Post by: Rhyso on 21 February 2011, 20:27

A few people have done it on their drives / garage but its an awkward fiddly job  :sad:


Oh no it isn't!!........  :grin: :smug:

How much was the actuator from TT?

Yebut you have the tidiest, spacious garage in the world  :tongue: :grin: :grin:

Urm from memory it was around £40-£60  :undecided:  Got it through R-Tech
Title: Re: n75? replce with same part number or can it b changed
Post by: old_n07 on 21 February 2011, 20:43
That isn't too bad, when I was sorting mine out I had a quick look for one and the cheapest I found was £90 ish.
Title: Re: n75? replce with same part number or can it b changed
Post by: richw911 on 21 February 2011, 20:45

A few people have done it on their drives / garage but its an awkward fiddly job  :sad:


Oh no it isn't!!........  :grin: :smug:

How much was the actuator from TT?

Yebut you have the tidiest, spacious garage in the world  :tongue: :grin: :grin:

Urm from memory it was around £40-£60  :undecided:  Got it through R-Tech

So true  :laugh: 
Title: Re: n75? replce with same part number or can it b changed
Post by: alex160 on 22 February 2011, 12:33
Will my gt tdi 115 have the latest valve on? its on a y plate.  :sad:
Title: Re: n75? replce with same part number or can it b changed
Post by: Defender on 22 February 2011, 12:51
Can I ask what the symptoms of the N75 being faulty are? I have a PD150 and have just had it scanned and it's come up with either a boost leak or faulty N75 valve. I've checked all the hoses on the top of the engine and they all seem ok, I have yet to check the intercooler pipes underneath but I'm assuming if they are ok on top they will be ok underneath?
Title: Re: n75? replce with same part number or can it b changed
Post by: Rhyso on 22 February 2011, 14:10
its the ones underneath that leak

Check both ends of the intercooler; the lugs wear away and the only solution is to replace them  :sad:
Title: Re: n75? replce with same part number or can it b changed
Post by: Defender on 23 February 2011, 12:51
its the ones underneath that leak

Check both ends of the intercooler; the lugs wear away and the only solution is to replace them  :sad:

Thanks Rhyso, I'll get them checked and new one's ordered as necessary.