FIX BOOST / EGR / Back pressure issues - replacement of pressure converter!

This video shows the steps for replacement of the pressure converter on a BMW N47 motor with more than 360.000km. Several fault codes have been fixed after this replacement regarding boost, EGR (AGR in German), back pressure, and particulate filter system.
Please leave your comments - thank you.

[@magswag2400]

Very Good tutorial👍

[@dinhvanpham8102]

Thank you for a very good informative video. You have helped me a lot. The location of my booster pressure solenoid is more hidden and difficult to dismount on my BMW N47T. I must remove at least 3 screws to dismount the metal plate where the pressure is installed. My experience is that this pressure used to short circuit when oil is coming into the pressure. After replacing this pressure most of the error disappear. Also after replacing the pressure converter nearrby the wastgate the turrbo is working much better. I too must replace all the hoses for the turbo vacuum system to get rrid of leakages.

[@ibrahimtomov445]

Does f10 520d have this, and where will it be located?

[@dinhvanpham8102]

Great video. In your video at 5:49 you connected the vacuum T-connector hose to the vacuum connector on the Booster pressure solenoid. The second connector "OUT" on the Booster Pressure Solenoid with Cyan color, where and which is this hose connected to? At 8:07 you connected the bottom of the Turbo Control Valve to a T-connector to vacuum. Where does the red hose on the Turbo Control Valve connected to? At 7:27 you connected "Out" hose with Cyan color from Booster Pressure Solenoid to where? I have a BMW F11 525D Xdrive I am not sure if the workshop has connected correct. The vacuum connector on the Booster Pressure is connected to the T connection from the Vacuum pump. The "OUT" connector with Cyan color goes to an old hose under the turbocharger. The bottom connector on my Turbo Control Valve goes to the T-connector Vacuum pump. The other connector on the Turbo Control valve goes to the Waste gate. Can you tell me if my connections on my turbocharger is correct? In 6 months I have had a lot of errors telling me that my turbocharger is not calibrated with error 29A400. Lately I have got error 299100 Pressure converter turbine flap, activation open circuit. The pressure converter refer to the Turbo Control valve. Correct? Does the error mean I have short circuit on my electronic waste gate? I know it is possible to order a new electronic part and replace it by unscrew 3 torque screws on the electronic part attaching to the turbocharger. Do you have any idea an how to check the electronic waste gate?

[@dinhvanpham8102]

Very good video. Can I use 3,5 mm inner diameter vacuum hose for brake? My BMW 525D F11 car is 11 years old. My diagnostic tool tells me my pressure converter has short circuit. The best practice is to replace the old hoses at the same time as with the pressure converter.

[@bmwhub6478]

Thank you. Yes, you can use 3,5 mm inner diameter vacuum hoses.

[@abhic2373]

​@@bmwhub6478hello dear. I know it's too late to ask this question. I recently bought a F25 X3 35d N57 which has 2 intermittent errors. 27B900 and 244C00. I have had it smoke pressure tested but it has no leaks. DPF is healthy and regenerating at regular intervals. Not getting enough boost and when giving 30-40% acceleration, it says drivetrain train error and limp mode. When the garage diagnosed it, it showed Exhaust Gas Pressure before Diesel Particulate Filter is constantly at 0.5 bar and no change whatsoever. Can you help me what could be the problem? 🤔🤔😔😔

[@2Drezik]

hmm nice find. could 004933 be related ? (DDE air system EGR )

[@spencerhulme1203]

This is a brilliant video and has helped me big time! I have the same job to do on my BMW and from watching your skills has certainly helped mine. I wanted to ask if you do not (mind) in the video at 6:37 what is the device in your hand is it another EGR solenoid, i looking in Haynes manul but it does not say what it is? Thank you BMW Hub in advance - 💯

[@bmwhub6478]

Thank you :-) Yes, the part at 6:37 is the Vacuum/Pressure Control Valve (part #70078400) which is used for controlling the vacuum unit of the bypass valve (this is part of the EGR cooler). The bypass vacuum has part #11717803615. I hope this helped.

[@spencerhulme1203]

@@bmwhub6478 Thank you so much once more, was looking at realoem for BMW and even they do not show the secondary - your wiring is brilliant btw, will be doing mine this week!

[@spencerhulme1203]

@@bmwhub6478 I wished i lived closer i would be you no1 customer lol.

[@yousef_gamer9763]

Does any number works or does has to be the same number code

[@wildchild5523]

Hi Thank you for sharing video and explain. Great.. I'd like to ask that strong smell from exhaust gases. He say possible turbo. BMW Diagnostic fault is exhaust backpressure sensor before turbocharger, signal too high. and other diagnostic say Air mass is too HIGH,,,,,, This by turbo is oil leaking? Need replace new turbo and turbocharger and intel manifold? I am Deaf. Hope you can advice me about this. Thanks you for your appreciate .

[@jahansheikh]

Hi. Did you manage to get your vehicle fixed?

[@rjhtrucking5429]

What would happen if all the vacuum lines were just blanked off ?

[@MrKnochen007]

No turbo support?

[@-ro-whatisthat6129]

Hi. How did you know is that part not working?

[@bmwhub6478]

The diaphragm in the pressure converter had a slight leak and would not hold vacuum for extended periods of time. I used a simple vacuum pump to verify this.

[@Ionut535d]

Hello, I have this error on my 535d e60 LCI:429A boost pressure control low pressure stage, control deviation, What would be the problem?

[@sara78130]

Hi did u find out

[@azelilazi6857]

?? did you find the issue ?

[@Ionut535d]

@@azelilazi6857 dpf problem

[@zc9027]

Hi mate, at idle i have vacuum and when i disconnect the electric of the solenoid i have little vacuum to the egr hose. Is this normal or should there be no vacuum when disconected?

[@bmwhub6478]

Hi mate - when you disconnect, I am almost sure that there should be no vacuum. This indicates that your solenoid is not working correctly and is leaking.

[@zc9027]

@@bmwhub6478 you were right, i replaced it and now the solenoid works another fault showed up 4501 . Now the solenoid is working i see the egr is opening much more its like there is too much vacuum on the egr. Car is jerking around 1500 rpm. The egr valve is new

[@bmwhub6478]

4501: Exhaust-gas recirculation: Air mass too high. Check your MAF sensor and maybe also calibrate your EGR valve.

[@zc9027]

@@bmwhub6478 thanks my friend will check that 👍 but the exact text is 4501 exhaust gas recirculation control, control deviation. (Error symptoms: signal or value above threshold. So im not sure it sugests the maf sensor. Egr valve is new aftermarket.

[@Cocovlog283]

Hi my e92 335d at full throttle at 120mph goes into limp mode only at that speed . I changed vacuum lines and i still have the problem. HELP!

[@bmwhub6478]

Do you have any data from an OBD diagnostic tool that you can share?

[@Cocovlog283]

@@bmwhub6478 it was the intake manifold vacuum pump . Now the car pulls but not that well on low rpm and it’s very smokey . Hopefully its not the small trubo 😭

[@sara78130]

Hi can help me BMW X3 244c00 what is problem?

[@abhic2373]

Did you fix the problem? I have the same code on n57 35D F25 X3

[@hich9977]

i have 2 problem 244c00 and 244b00 bmw f10 525d 160kw, what is the problem?

[@rolandjohansson6877]

244C00 is low pressure boost control=could be leak in vaccum tubes, check MAP sensor for dirt. 244b00 don´t know but sure it wasn´t 244D00?

[@hich9977]

@@rolandjohansson6877 244c00 and 244d00

[@bobbyholman9944]

I have code 4521 anyone seen that code before