Omega Owners Forum
Chat Area => General Car Chat => Topic started by: Webby the Bear on 08 September 2014, 18:55:02
-
Sup fellas :y
So wife's dad got the above car. Hardly any power in any gear. I'm thinking the turbo snack erred or most likely the waste gate has stuck open.
My theory right and if so how do you test such things? I learned the theory in school but I've never had to get to one.
Any help greatly appreciated :y
-
Have a look at turbo,there should be a rod going across it to a flap,if its open you will feel the gap,or remove a pipe and see if the vanes spin freely,as it could be seized,if it has seized you need to find out why,also if it is a new turbo job,do oil and filter change.
-
Thanks martin/
don't suppose you got a piccie? I take it if it is the turbo its a simple remove / replace job?
-
No i havnt mate,have you looked on autodate?
-
You need to check the the vac hoses first.
With limited tools the only thing you can really check is as mentioned that the turbo vanes spins freely. Touch the shaft not the vanes.
Diagnostics can test the turbo actuator electronic box which actuates the vacuum feed.
Any codes with your new toy? (n57 valve)
The turbo variable vane movement and associated pipework can be tested is you can get your hands on a vac gauge.
Split/ rubbed hoses cause issues.
-
Engine code/ diesel?
-
Did you check fault codes ? As Other say check vac pipes
-
Did you check fault codes ? As Other say check vac pipes
+1 on checking vac pipes,is this the old tdi lump or the later Pd lump?,engine code?
-
Don't assume turbo just because it won't go,many other things can cause the problem,maf being one of them and they rarely throw up a code for it .
-
Thanks boyos :)
Sorry, yeah shoulda mentioned..... Passat 1.8 TDI on a 2000 plate :)
So, i'll check vac pipes going to and from turbo. ill see if theres any codes. and i presume the inlet connects in someway to the turbo so i can remove this and spin turbo by hand?
-
Plenty of things can cause lack of boost including the likes of a stuck open EGR valve etc.
-
Thanks mark,
anyone familiar with this engine and possibly have pics of the wastegate, pipes, turbo, egr valve etc. im just a bit scared as never even held a turbo before lol
-
Well we still don't know which engine it is, it could be the old 8V direct injection diesel or the PD given the age.
And there may well not be a waste gate either.
-
Check the hose hasn't popped off the turbo, happens quite a bit and can lead to a diagnostic tail chase if not checked first :y
-
Thanks boyos :)
Sorry, yeah shoulda mentioned..... Passat 1.8 TDI on a 2000 plate :)
So, i'll check vac pipes going to and from turbo. ill see if theres any codes. and i presume the inlet connects in someway to the turbo so i can remove this and spin turbo by hand?
It won't be a 1.8 unless its petrol powered,diesel is 1.9 unless its the v6 :y,engine code is written on a label on top cam belt cover and under boot carpet on a stuck on paper label
-
Ok boys thanks for your input. i was only going on what the wifes dad said.
ill get him to find the engine code :)
-
Ps, ill get code reader on it.
been researching. assuming its the 1.9 non-v6 (im sure its not v6). seems like maf is common issue and also n75 valve.... is this the vw term for wastegate? lol
as said will get the engine code asap but thought id ponder. out loud :)
-
Don't guess, diagnose..... :y
Also, as said, it might not have a wastegate :D
An N75 is the boost pressure regulator valve
-
Don't guess, diagnose..... :y
Also, as said, it might not have a wastegate :D
An N75 is the boost pressure regulator valve
Completely agree mate. though ive never worked on a VW diesel so i was just really pondering out loud to try and get things right in my head. sort of like planning a provisional attack that i can amend ;)
speaking away from this issie itself, why are there so many vac lines?? i thought it was very simple..... exhaust gas spins turbine. this in turn spins compressor. compressed air goes back in to the inlet. and a wastegate (or equivalent) was there to stop over boosting when the turbo ran too fast. i really thought it was that simple :-[
but as said, ive never dealt with one in real life (hence the pondering lol) so im really keen to get stuck in to this.
-
Don't guess, diagnose..... :y
Also, as said, it might not have a wastegate :D
An N75 is the boost pressure regulator valve
Completely agree mate. though ive never worked on a VW diesel so i was just really pondering out loud to try and get things right in my head. sort of like planning a provisional attack that i can amend ;)
speaking away from this issie itself, why are there so many vac lines?? i thought it was very simple..... exhaust gas spins turbine. this in turn spins compressor. compressed air goes back in to the inlet. and a wastegate (or equivalent) was there to stop over boosting when the turbo ran too fast. i really thought it was that simple :-[
but as said, ive never dealt with one in real life (hence the pondering lol) so im really keen to get stuck in to this.
Variable vane turbo if its a Pd engine and no wastegate :y
-
Isnt PD the really advanced diesel system?
im assuming the one on her dads 2000 passat will be DI with an injector pump?
-
Isnt PD the really advanced diesel system?
im assuming the one on her dads 2000 passat will be DI with an injector pump?
2000 is right on the change,could be either :y
-
1999 was when the first PD's hit shores.
And advanced....er no, it was a compromise setup as VW don't like paying royalties to Bosch for Common Rail. ;D :D
As for VW or any other, they all work the same!
The vac pipes will do many things for the likes of swirl flaps (if fitted - multivalve engines only), possibly EGR (is vac operated) and in this case, although not vac operated, the inlet pressure can control the boost (or on the variable vane setups, vac controls the vane position)
-
Cheers boys :)
Will update when i get this engine code :)
-
1999 was when the first PD's hit shores.
And advanced....er no, it was a compromise setup as VW don't like paying royalties to Bosch for Common Rail. ;D :D
As for VW or any other, they all work the same!
The vac pipes will do many things for the likes of swirl flaps (if fitted - multivalve engines only), possibly EGR (is vac operated) and in this case, although not vac operated, the inlet pressure can control the boost (or on the variable vane setups, vac controls the vane position)
Never mind the turbo, Bet his fickin head's spinning now. ;D
-
1999 was when the first PD's hit shores.
And advanced....er no, it was a compromise setup as VW don't like paying royalties to Bosch for Common Rail. ;D :D
As for VW or any other, they all work the same!
The vac pipes will do many things for the likes of swirl flaps (if fitted - multivalve engines only), possibly EGR (is vac operated) and in this case, although not vac operated, the inlet pressure can control the boost (or on the variable vane setups, vac controls the vane position)
Never mind the turbo, Bet his fickin head's spinning now. ;D
Yup lol
-
Best thing to do is actually see the car,and take it from there,it may well be something simple and easy to fix :y
-
Best thing to do is actually see the car,and take it from there,it may well be something simple and easy to fix :y
Completely agree mate. He still aint told me engine code. going to chase up now.
-
Reset then boys. Here's the pics of hopefully engine code. Is this the 1.9 tdi as suspected?
(http://i1226.photobucket.com/albums/ee402/webbybear1/imagejpg1_zps99c70f54.jpg) (http://s1226.photobucket.com/user/webbybear1/media/imagejpg1_zps99c70f54.jpg.html)
(http://i1226.photobucket.com/albums/ee402/webbybear1/imagejpg2_zps555456b1.jpg) (http://s1226.photobucket.com/user/webbybear1/media/imagejpg2_zps555456b1.jpg.html)
-
No engine code there
On timing belt cover should be label with code or in boot under carpet
-
ok thanks mate. ill get over there and have a butchers but is a pain cos its a few miles away ::)
-
(http://i1114.photobucket.com/albums/k536/tidla1/20140912_143147_resized_zps5f396c89.jpg)
If it looks like this, its broke.
The cylinder on the left with the pipe connector is what operates the variable vanes.
With a vacuum applied you should be able to see the rod at the back (not pictured) move with vacuum application.
-
(http://i1114.photobucket.com/albums/k536/tidla1/20140912_143147_resized_zps5f396c89.jpg)
If it looks like this, its broke.
The cylinder on the left with the pipe connector is what operates the variable vanes.
With a vacuum applied you should be able to see the rod at the back (not pictured) move with vacuum application.
I fitted one of them to a golf yesterday, not bad at all to change :y
-
Looks like the bears leaving us hangin on this one..
-
Looks like the bears leaving us hangin on this one..
His (brain?) has finally imploded. ;D
-
;D ;D ;D
-
Looks like the bears leaving us hangin on this one..
He's probably stuck head first in the spare wheel well looking for the build data sticker... ;D
-
Lol soz lads just got back from holiday. Clearly Heacham is where all the omegas are! Two in the car park where our static caravan was and saw three on short trips around :y
Should be getting to the mrs dads. Car this week so will update then :y