daveCh Posted September 17, 2007 Report Share Posted September 17, 2007 thanks again. will post codes and problems when i know more. will update on here what i try and if it works... cheers rustynuts Link to comment Share on other sites More sharing options...
Johnski Posted September 18, 2007 Report Share Posted September 18, 2007 I sourced my problem as the intercooler hose needing replaced which was done the other day. Once on again the car was running fine for a few days until the other evening. I was travelling along the motorway when i noticed the car lost acceleration ability, when i slowed down it sounded like a knocking noise was coming from the engine. I pulled over to investigate and the car was running very sluggishly. There was very little power on accelerating and it juttered quite a lot. Took the car to the steelers today and didnt get the news i was hoping for..... They said apparently that a cam sensor fault was showing up on vagcom. When they took the rocker cover off they said that the cam was 'worn' and that it would need a new cam kit, new belt kit, gaskets and seals...total value of repair 1500quid My question is why didnt this fault show up as a warning light on the dash and also how can a cam get 'worn' at 70k when the engines had a full service history and has never been starved of oil? Link to comment Share on other sites More sharing options...
daveCh Posted September 18, 2007 Report Share Posted September 18, 2007 hope that aint my problem then my golf gt tdi 130pd has just turned 150k but serviced every 18/20 k only bought it friday from a trader off the tinternet. had a passat with 110 on went ok and people say the vw are good for 250k if looked after?? Link to comment Share on other sites More sharing options...
daveCh Posted September 20, 2007 Report Share Posted September 20, 2007 aup haven't had the car linked up to get the test codes yet but been down the back of the engine, bare with me i am only guessing but there is a moving part connected to the turbo and when you move it it sort a makes squeaky rubbery sound is this the VNT bit that all are talking about? it pushes down towards the floor??? Link to comment Share on other sites More sharing options...
Rustynuts Posted September 20, 2007 Report Share Posted September 20, 2007 Yep, that's it. Should have about an inch of fairly free movement on it. Link to comment Share on other sites More sharing options...
daveCh Posted September 20, 2007 Report Share Posted September 20, 2007 right just been out again its got a bit of resistance behind it but it feels as if the rubber thats squeaking is the resistant bit..( and putin a fairly good indentation in my thumb). Link to comment Share on other sites More sharing options...
daveCh Posted September 20, 2007 Report Share Posted September 20, 2007 right just been for another run after pumpin the VNT , when i accelerate now there is like a air suckin noise from inside somwhere .. is this a whole maybe in the pipe? or should it make that sound?? Link to comment Share on other sites More sharing options...
Rustynuts Posted September 20, 2007 Report Share Posted September 20, 2007 Split in the boost hose most likely, or possibly a vacuum hose fell off? Link to comment Share on other sites More sharing options...
daveCh Posted September 20, 2007 Report Share Posted September 20, 2007 is the vacume hose under the vnt where ya feelin down the back it feels bout the size of my little finger and kind of a webbed pipe just under the vnt where it pushes down. took it up the hill where it went into limp the other day (altough car was fully loaded when it happened)and today went round t 4 k every time, did seem once to lag around the 4k rpm in 4th ... then up to errughm110 is before runnin out a road. do you think it went ok cos it was just me and no family in? .ie- no load on the turbo. when it did go limp with em all in it would only go to 3800 rpm in 4th doin bout 55 60 up the hill Link to comment Share on other sites More sharing options...
daveCh Posted September 21, 2007 Report Share Posted September 21, 2007 right got my fault code and it reads 17965 p1557 turbo/supercharger boost sensor (A) circuit value above upper control limit Link to comment Share on other sites More sharing options...
Rustynuts Posted September 21, 2007 Report Share Posted September 21, 2007 Overboosting then. Sticky VNT mechanism, faulty N75 valve are the places to start. Link to comment Share on other sites More sharing options...
daveCh Posted September 21, 2007 Report Share Posted September 21, 2007 so no need for a new turbo yet then? could the vnt be ok when its cold and then more prone t stick when the engine is warmed up Link to comment Share on other sites More sharing options...
daveCh Posted September 23, 2007 Report Share Posted September 23, 2007 If I wer to replace the turbo wit 1 from the same year and engine thats covered 29k is it straight swap ie- no tuning or reseting anything is there? also my engine 1.9 gt tdi 130 has just done 150k what oil should I be using can I put that magnatec stuff in? Link to comment Share on other sites More sharing options...
Rustynuts Posted September 23, 2007 Report Share Posted September 23, 2007 Yep, turbo should be a straight swap over. Magnatec isn't good. You need oil with VW spec 504.00 5w 40 weight for 10k miles service, and VW spec 507.00 5w 30 weight for longlife variable service. Magnatec... Link to comment Share on other sites More sharing options...
Wobby Posted September 23, 2007 Report Share Posted September 23, 2007 Isn't it best to get the VNT working right and maybe substitute the N75 valve first? Its likely to fix this type of problem. Link to comment Share on other sites More sharing options...
daveCh Posted September 23, 2007 Report Share Posted September 23, 2007 I have been pumpin the vnt and its moving bout the inch as people say, as for the n75 valve whats the best way of testing this ? apart from a new one.. thanks for the oil advice Link to comment Share on other sites More sharing options...
daveCh Posted September 23, 2007 Report Share Posted September 23, 2007 how long does it take to change the n75? i have a mate with same car same engine. and if i do is there a chance i could nazz up his n75 as well? Link to comment Share on other sites More sharing options...
daveCh Posted September 24, 2007 Report Share Posted September 24, 2007 regards oil does this make a difference on the turbo? obviously I dont know the oil the previous owner used but if its been runing the wrong oil for the last 20k would this have done any great harm to either engine or turbo? i do know he filled up past the max mark what bout this stuff Millers XFE-PD any good? Link to comment Share on other sites More sharing options...
Rustynuts Posted September 24, 2007 Report Share Posted September 24, 2007 The oil is designed to (predominantly) protect the cam lobes of the unit injectors and valves, as this is where it's subjected to maximum shear forces. Having said that, the rest of the engine is also considered when oil is specified. Things such as cold start up, time to circulate to all parts etc. are all factors. A thick dino based oil could take ages to provide correct lubrication to all parts of the engine, and damage caused before that happens is gonna knacker an engine. Also, synthetic oils don't sludge as much, and don't clog the piston rings. Link to comment Share on other sites More sharing options...
daveCh Posted September 24, 2007 Report Share Posted September 24, 2007 what bout the n75 worth swappin? or could i knacker his up. whats esitmated time on this swap Link to comment Share on other sites More sharing options...
Wobby Posted September 24, 2007 Report Share Posted September 24, 2007 [ QUOTE ] what bout this stuff Millers XFE-PD any good? [/ QUOTE ] I have used this for a while and seems good enough. Have just changed to some a little bit cheaper and that is carried in stock where i shop. I am changing to the cheaper stuff and dropping to 5-6k oil changes as mines seems to rattle more once it gets above 6k Link to comment Share on other sites More sharing options...
Rustynuts Posted September 24, 2007 Report Share Posted September 24, 2007 [ QUOTE ] what bout the n75 worth swappin? or could i knacker his up. whats esitmated time on this swap [/ QUOTE ] Worth a swap, yes. It's just a few minutes job as I remember (don't mix up the vacuum pipes!!!) and should prove the fault. Link to comment Share on other sites More sharing options...
daveCh Posted September 24, 2007 Report Share Posted September 24, 2007 thanks to all who advised me on here ... will be posting bak when hopefully i have cured the fault. was also thinkin of a vacume tool to work the vnt, what pressure would i expect to get it to move to its full extent? and is there any way of damaging the thing under the vnt (bit that pulls the vnt rod down) by doing this? Link to comment Share on other sites More sharing options...
Rustynuts Posted September 24, 2007 Report Share Posted September 24, 2007 There's a procedure for exercising the vnt using VagCom, but I'm not sure what it is. Link to comment Share on other sites More sharing options...
daveCh Posted September 24, 2007 Report Share Posted September 24, 2007 just a thought i had?, cant get to the vag com at garage so easy now. the vag com download from the net and a cable ya can get is it easy to use? in other words could i kill me motor/ electrics by pushin the wrong buttons on my laptop Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now