no boost please help

[oldcar]

Hi Guys,

I have replaced the turbo gasket and 3 bolts. I took the picture of my old parts, the previous doggy mechanic did not install the gasket properly, i only had 1/2 left, one of the bolt was broken, and this is what caused a massive boost leak.

Despite that the problem now fixed but I got no boost, still can rev past 4000 rpm but it is like a NA very boring. I can not hear any hissing sound while driving. And mechanic scanned the car with no fault-engine. only one fault with the brake-no communication. beside that the car drives fine, and AWD working.

Can some one please tell me what is the wrong?????Please. or scanned again with some other mechanic?

 

[badger5]

no boost as in zero?

 

[oldcar]

ok, thanks badger. boost gauge swings from zero to zero max, and stopped right here at zero. before it used to boost plus 8psi and max of 24psi.
Anyway, I just did 2 hour battery disconnect, and I removed the traction light off, now esp button is working. but I scanned with my cheap VAG scanner
and I get this code 18010-low volatge 30mv??and also i scanned all sensors I get one fail 02 sensor. So could the low voltage caused by failing o2 sensor or just because of LIMP mode?? Anyone please, Audi drives me nuts...

 

[<tuffty/>]

18010 code is from you disconnecting the battery... unrelated to your issue...

Which 02 sensor and which code? one sensor is more relevant than the other

<tuffty/>

 

[badger5]

ok, thanks badger. boost gauge swings from zero to zero max, and stopped right here at zero. before it used to boost plus 8psi and max of 24psi.
Anyway, I just did 2 hour battery disconnect, and I removed the traction light off, now esp button is working. but I scanned with my cheap VAG scanner
and I get this code 18010-low volatge 30mv??and also i scanned all sensors I get one fail 02 sensor. So could the low voltage caused by failing o2 sensor or just because of LIMP mode?? Anyone please, Audi drives me nuts...

turbo no spinny at all or wastegate open first thing I would be checking.

limp mode would be 5psi (actuator pressure) not zero

 

[<tuffty/>]

Given the work thats been done I wonder if something has dropped into the turbine side stopping the turbo from spinning

<tuffty/>

 

[oldcar]

thank guys, i will check tomorrow morning myself,,i hope nothing is dropped inside......also, my scanner did not tell me which 02 sensor. i replaced new one near the firewall 1 year ago. would this to do with the bottom one 2X02 on the cat?? Would it matter. Also i will check the waste gate and turo spin and will update....at least , this car feels like in limp mode because i had the same issue 2 years ago with the oem mapping when i over boosted i get a limp, and vw specialist just reset and clear ready to go. This time I will see vw specialist again to see if o2 sensor plays the limp mode?? but saying all that i will check turbo and wastegate first to make sure it is not stuck. Will update tomorrow...

See the picture,the mechanic replaced new gasket and bolt and no more big boost leak and found only half gasket and damaged bolt which was not installed properly by previous doggy mechanic.... I hope other 1/2 is outside the car not in turbo,,,

 

[oldcar]

turbo no spinny at all or wastegate open first thing I would be checking.

limp mode would be 5psi (actuator pressure) not zero

from memory you are correct.

 

[oldcar]

latest update, just remove the turbe, something stuck the turbo....farrrrk... either gasket or mechanic??? how do i remove it

 

[<tuffty/>]

If its the gasket you will need to drop the turbo from the manifold to try and get it out...

...if its the mechanic you could just ask him nicely to get out your turbo or you could try and entice him out with a bacon buttie

<tuffty/>

 

[<tuffty/>]

...you should also check the compressor side too in case its dropped in there as I assume the charge pipe was removed for easier access

<tuffty/>

 

[oldcar]

If its the gasket you will need to drop the turbo from the manifold to try and get it out...

...if its the mechanic you could just ask him nicely to get out your turbo or you could try and entice him out with a bacon buttie

<tuffty/>

i was lucky i am almost had an heartattack when i felt it stuck.., first thought was stuck, and i took the picture, but i was able to unstuck doing anticlockwise now it free spin same as my old turbo sitting in the garage. There is no shaft play and blade damage--see picture... ,,,nothing damage or shaft play...lack of lubrication??i use 10-50w. but now still the same only hit 0 psi from -20 just the same.....so what next..i will check wastegate tomorrow..its dark here.

 

[oldcar]

Hi Guys,

I have replaced the turbo gasket and 3 bolts. I took the picture of my old parts, the previous doggy mechanic did not install the gasket properly, i only had 1/2 left, one of the bolt was broken, and this is what caused a massive boost leak.

Despite that the problem now fixed but I got no boost, still can rev past 4000 rpm but it is like a NA very boring. I can not hear any hissing sound while driving. And mechanic scanned the car with no fault-engine. only one fault with the brake-no communication. beside that the car drives fine, and AWD working.

Can some one please tell me what is the wrong?????Please. or scanned again with some other mechanic?

I rescanned my ecu now, i get 1 fault code which is called - "heated o2 sensor fail", where as other "02 sensor pass." So which one is close to the fire wall??? please

 

[badger5]

i was lucky i am almost had an heartattack when i felt it stuck.., first thought was stuck, and i took the picture, but i was able to unstuck doing anticlockwise now it free spin same as my old turbo sitting in the garage. There is no shaft play and blade damage--see picture... ,,,nothing damage or shaft play...lack of lubrication??i use 10-50w. but now still the same only hit 0 psi from -20 just the same.....so what next..i will check wastegate tomorrow..its dark here.

whatever is stuck is in the turbine side. you dislodged it but its still sat there jamming it.
turbo bolts out, push turbo down and see whats stuck in there and remove it

 

[<tuffty/>]

Bank1 Sensor1 (B1S1) is the precat lambda (near turbo), Bank1 Sensor2 (B1S2) is postcat

You need VCDS really... cheap readers tend to be rubbish on VAG cars

<tuffty/>

 

[oldcar]

Bank1 Sensor1 (B1S1) is the precat lambda (near turbo), Bank1 Sensor2 (B1S2) is postcat

You need VCDS really... cheap readers tend to be rubbish on VAG cars

<tuffty/>

yes agreed 100%. Tomorrow i get scanned by vw specialist a proper vcd.

 

[oldcar]

whatever is stuck is in the turbine side. you dislodged it but its still sat there jamming it.
turbo bolts out, push turbo down and see whats stuck in there and remove it

i will check again tommorow i might have to lean the car and get vacum clear to suck it out.. i reckon its fried sealant putty-white colour.

 

[oldcar]

i will do one more test, unplug n75 see any boost come up...

 

[<tuffty/>]

As Bill said dude... you need to check thats its gone by removing the turbo... it will only end in tears if not...

If it was your mechanic that removed and refitted the turbo then arguably he should be checking it over...

<tuffty/>

 

[oldcar]

As Bill said dude... you need to check thats its gone by removing the turbo... it will only end in tears if not...

If it was your mechanic that removed and refitted the turbo then arguably he should be checking it over...

<tuffty/>

ok,,,this will make him go crazy, because he told me he put lots loctite in for the three turbo nuts..now he has to remove again. Anyway, just before I saw this I actually unplug n75 and also did 2 separate runs with out maf plugged in, bothy showing no differences in performance, but still running -20 to 0 psi. I will see him and ask him to recheck the turbo tomorrow....

 

[<tuffty/>]

Did he use OE bolts as they are a harder material to withstand the heat... normal off the shelf bolts are any good

<tuffty/>

 

[oldcar]

Did he use OE bolts as they are a harder material to withstand the heat... normal off the shelf bolts are any good

<tuffty/>

I used 3 new oem audi bolt. he mechanic is busy this week, but next monday is the dday if i dnt get things work out. so i am going to run idle with intake off to see if blades are turning....wish me with the positive results... will update soon

 

[oldcar]

guys, i just about to start the engine with out intake and i tried to move the blade, and it is stuck,,,i reckon some broken bites like gasket if not some one droped somthing in it, so now i have to take the turbo out next week and remove it carefully. What a nightmare....

 

[hydro s3]

Just like Badger 5 has already told you to do mate. Listen to the experts on the advice they are giving you.

 

[oldcar]

just a quick update, i dropped the car in, the mechanic was a bit reluctant to pull the turbo out, and kept saying the turbo is fine when he checked and repaired the manifold gasket. But I told him, the blade is not turning, sort of stuck but can be unstuck when you anticlock wise the chra then its ok. But when you go for a drive, the air pressure pushes the " object" and will cause the blade stuck again. Then he said, ok," I pull the turbo out and give it to you and I will not touch it". Ok, fine I will check it myself once turbo is dissembled and checked. and He will put it back....so keep in tune..

 

[oldcar]

ok just a quick update, mechanic checked the blade at station, yes it stuck but when you wriggle it, it unstuck. Soon as car start it stuck again. so the good news is the fact is conformed. and turbo will come out this week, at least there is no shaft movement and hopefully nothing too serious. Stay in tune as I will upload pictures once turbo is pulled apart.

 

[oldcar]

ok, turbo pulled out . and air blow the turbo and found another piece of gasket that was jammed in the exhaust side-something I knew hanging on the exhaust channel. No damage on my turbo since no other debris found....and we will see when they put the turbo back and should I gain the boost...and thanks for all your input. That was very helpful. That also means I change dthe fuel pump for no reason, the other mechanic diagnosed WRONG.

 

[badger5]

shoddy work from the mechanic first time.
it was pretty obvious it would be residue of gasket from the first failure

glad its fixed now tho

 

[oldcar]

shoddy work from the mechanic first time.
it was pretty obvious it would be residue of gasket from the first failure

glad its fixed now tho

he went bankrupted only lasted 2 years, now his premises becomes a car wash station. Aftall, it was not a warped manifold and it was not a fuel pump.

 

[oldcar]

just a quick update, this is the first long distance highway driving and since manifold leak and turbo stuck issues has been fixed. The sound of engine is great. and the car spools up much quick. I hear no sound at 15psi but once hit toward 20psi i can hear shhh. sound.

Also the traction light issue previously was no communication to scanner, mechanic thought it was to do with my ABS---thank god, i did not replace ABS sensor or module. All the sudden, since "turbo stuck" fixed, this "traction" light has disappeared .
Even Audi's ecu confused itself as when the car's turbine stopped suddenly on high way and ecu could not worked out why this is caused, the only thing was to blame faulty ABS???/. After all its the turbo issue that sending the wrong message to ECU. I am happy now, the car is working 100%. And thank you all.

 

[badger5]

nice one. great end result.

hope you get to continue to enjoy the car now finally

 

[oldcar]

nice one. great end result.

hope you get to continue to enjoy the car now finally

car drives fine now, very good, first time with no manifold boost leak and engine sounds good.