Turbo / MAF replacement, Oil found

[ekstroemtj]

@lewis @mark...

depends on the reading of the diagram.

the RED tubes are going from the Driver side Turbo up . There is no T but there are 2 lines going in different directions. One is ending on the Top of n75 valve. 

Dont know if there is a reading too.

[ekstroemtj]

Major work on the drivers side Turbo.  I can see that there was already some "specialist" working here. 

Take away air filter housing to get access. Take away tube with the MAF.

Changed the o ring between the metal hose and the charger

Edited August 13, 2017 by ekstroemtj

[ekstroemtj]

Changed the pressure hose to the wastegate. New blue silicon line. 

Changed the tube which is going away from the turbo housing in direction to the belt. No. 15 on the diagram 

there was already a damage and previous owner fixed it in a very special way

Edited August 13, 2017 by ekstroemtj

[ekstroemtj]

I am glad to fix all this broken / weak points. But in the end, the whistle noise still there.

[ekstroemtj]

It doesnt fit to this topic but i dont want to open new discussion.

 

i have serious problems with my sway bar bushings. They are making noises like crazy. Feel even shy to drive. Squeaking like crazy. I treat some with a wrong spray and since than they are noisy. I have new bushings. Just wondering if i can change them without removing all the sway bar. 

Any advice is very welcome.

 

http://www.pelicanparts.com/techarticles/Porsche-Cayenne/45-SUSPEN-Front_Sway_Bar_Bushing_Replacement/45-SUSPEN-Front_Sway_Bar_Bushing_Replacement.htm

[lewisweller]

8 hours ago, ekstroemtj said:

@lewis @mark...

depends on the reading of the diagram.

the RED tubes are going from the Driver side Turbo up . There is no T but there are 2 lines going in different directions. One is ending on the Top of n75 valve. 

Dont know if there is a reading too.

It's only a return air pipe, as the maf has already measured the air going in the system so it must stay in the system by way of returning back to pipe 14 and back into the driver side turbo inlet. 

[ekstroemtj]

@lewisweller could you explain the airflow Lewis? I thought this is some kind of ventilation for the turbo charger. The hot air is running through this pipe up to the oil air seperator right?!

[ekstroemtj]

the overboost code didnt come back until now. Maybe i am really lucky with weekend repairs.

[Zakowsky]

That would be great Thomas - maybe you can start trying to increase boost now!

[ekstroemtj]

1 hour ago, Zakowsky said:

That would be great Thomas - maybe you can start trying to increase boost now!

 

I will have a 1000 km trip to the seaside now. We will see how the car will manage this

[ekstroemtj]

1000 km trip to Mediterranean Sea. No problems except 170 liters of gas and 0.5 liter good oil.

 

I can't push the pedal down like crazy .  I am really afraid when i see how fast the boost needle is hitting the scale until the end. Tomorrow I will check codes. Would not be a surprise if ...,

Edited August 16, 2017 by ekstroemtj

[ekstroemtj]

I just connected my icarsoft code reader and there is NO OVERBOOST code! So fortunately the repair of both pressure lines must have cleared the boost leak in some way. The whistle sound still there but for now i am almost satisfied.

 

[hahnmgh63]

Congratulations on finally fixing that problem. A lot of work but you've fixed a lot of weak points which will contribute to long term reliability.  I can't remember, do you have stock air filters?  A more open filter can let some of the intake and/or Turbo whistling noise through.

[ekstroemtj]

h

3 hours ago, hahnmgh63 said:

Congratulations on finally fixing that problem. A lot of work but you've fixed a lot of weak points which will contribute to long term reliability.  I can't remember, do you have stock air filters?  A more open filter can let some of the intake and/or Turbo whistling noise through.

 

Hi Mark. Thank you for congrats. Maybe i could do it more quickly if i had more time to work on the car.  

Yes you are right. Going a little bit more deep inside i found many many weak parts . Some are repaired by the previous owner but in a very unprofessional way. Lesson: never buy a car with italien registration. You dont know for shure if the service books are not cooked in some way. 

 

I an using stock air filters. The noise occurs first time when i worked under the car to change some tubes. 

[ekstroemtj]

after 2500 km to the seaside and back.

 

no overboost codes anymore.

 

the car is shifting in a different way what makes me believe that any kind of leaks are having impact of the shifting process.

 

some small hesitation when i go to WOT.  Who knows what this is again. 

 

Some performance problems. Really hard to get the fully loaded car crossing the 250 km/h level.

 

And of course lots of oil. Jesus when i drive it hard its using more oil than petrol.

 

 

[ekstroemtj]

its like a very bad joke.  Just wrote my message and after drove to grocery shop. Very short part highway. Guess what. Yes. Overboost. This is impossible 

[ekstroemtj]

the new one is ready to order. 

93.000 eur + some additional equipment. Very easy to spend 110.000

 

But it looks great!!!

[ekstroemtj]

On 30.8.2017 at 9:58 PM, ekstroemtj said:

its like a very bad joke.  Just wrote my message and after drove to grocery shop. Very short part highway. Guess what. Yes. Overboost. This is impossible 

 

Reason found. The clip which is fixing the small metal boost hose with the turbo housing became loose. Hose wasnt fitted very tight than. Big leak.

[hahnmgh63]

Codes cleared, you did a highspeed run down the A3 or A5 and all is well?????

[ekstroemtj]

6 hours ago, hahnmgh63 said:

Codes cleared, you did a highspeed run down the A3 or A5 and all is well?????

 

Mark knows the german highways 

yes you can run very fast there but now lots of road construction and holiday traffic. I will repair on weekend and make a test drive

[ekstroemtj]

Repaired but i found it really difficult to fix this. To place this spring on the right place. Very tight everthing. Cleared codes and testdrive. Everything ok. I am again suprised how different the shifting is working without a boost or vacuum leak

[hahnmgh63]

Congratulations

[Zakowsky]

Glad you solved the problem Thomas. Are you going to buy the new one anyway? Looks nice!

[ekstroemtj]

1 hour ago, Zakowsky said:

Glad you solved the problem Thomas. Are you going to buy the new one anyway? Looks nice!

Hi! Yes its a good feeling to have solved the problem. I hope will last for some time. 

But there are always some other things to do as you know. My brake discs in the front are going to the end. The sway bar bushings making noises... 

i feel pity to sell the car after all the time and money i spend. What i know for shure is that i will sell my old CS with the knocking engine. 

The new Cayenne looks very good but: i will not spent 110.000 EUR for a car. Definitely not

[hahnmgh63]

Keep it for at least another year to get some money out of your time and repairs.  Also good to see after a year if the next Gen Cayenne has any problems although sometimes we know they don't show up for a couple of years.