BMW 335d & X5d Vacuum System Service Part1

[@robmckean7531]

Hi , excellent videos . Question : what is the “motor mount vacuum switch “ on the 335d ?

[@alphadevyat]

Motor mounts are vacuum controlled between hard and soft setting. There is a switchover valve that is the same as for compressor bypass and EGR cooler. It is located on the driver side of the motor under the intake manifold aft of the glow plug controller.

[@robmckean7531]

Thank you for that , I found my vacuum leak at the switch under the intake manifold , hose was old just like in your super video . You know from comments many have been helped by your clear and well made videos . I have been an air cooled Porsche tech so the BMW was like working on a NASA rocket.

[@ConTheDon187]

why'd you splice in new lines rather than run whole new ones? Just bought my x5, has 90k miles on it and is a 2012. Is the vacuum line all the same diameter? Better to order online or buy from bmw? Single turbo conversion better than the "twin power" setup?

[@alphadevyat]

@@ConTheDon187 splice just like the factory did. Easier to service. There are only a few extra connections one can eliminate. Otherwise they are all single pieces. Get vac line from FCP euro, part number 11731259996. On X5 lines to motor mounts are a different diameter. Singe turbos been tried. Don’t bother.

[@100cosma]

What use have this 'compresor bypass' from the 4:45 Please help me with this question🫡

[@alphadevyat]

Compressor bypass switches the airside of turbos from small to large output.

[@100cosma]

@@alphadevyatMy vaccum is not conected there but the small turbo works great, can this be a problem becose i do not have the vaccum conected there?

[@alphadevyat]

@@100cosma you have elaborate where are you referring your vacuum is not connected. Vacuum system is closed loop and you can not have any open connections or you will have leaked and it will affect the whole system.

[@100cosma]

I mean i do not have the vaccum connectrd to the bypass compressor but the turbos works great

[@alphadevyat]

@@100cosma if the vacuum feel is closed your turbos will work great up to 3200rpm then you will be choking them.

[@aldinbabba418]

Hey is there any way I could contact you I’m stuck on the part with the egr on the left side of the engine and the right side under intake manifold where there is the egr pressure converter is the two nipples where do they go? Please need help!

[@alphadevyat]

Stock car?

[@aldinbabba418]

@@alphadevyat yes stock car

[@alphadevyat]

@@aldinbabba418 low pressure EGR pressure converter under the intake manifold. Output from it goes to LP EGR on the passenger side behind the big turbo. Input into the pressure converter comes from vacuum distribution line just in front on the pressure converter and under the intake manifold. On the pressure converter the nipple with blue dot is an output nipple.

[@aldinbabba418]

@@alphadevyat thank you so much!honestly appreciate you taking the time to help subscribed hope to see a part 3 as yours is the best how to video period others are not helpful and don’t reply back!

[@alphadevyat]

@@aldinbabba418 appreciate it. Hope you fix your car

[@bm-garage]

How do you test the pressure converters with a hand vacuum pump? I put my pump into the black side and plugged off the blue end of it. When pumping one of them was losing a lot more vacuum and was a lot louder than the other one. Does this mean it’s bad? I can send you a video through email if needed.

[@alphadevyat]

Ben, pressure converters when not energized will not hold vacuum. So when you plug an output port and apply vacuum to the input port they will leak whether good or bad, if not energized.

[@mevlutdemir6070]

bonjour Tu peux partager Une vidéo x5 e70 40d vakul sistem svl

[@F-Arda]

Hi I have a problem. The cooling fan turns on after 5 seconds starting the car , the weather doesn’t matters even in -10 celsius it’s turning on and it’s not turning off till the shutdown the engine. I made real time data logging it’s turning off after 80km/h I can’t figure it out what’s wrong.Only getting heating glow plugs errors.

[@alphadevyat]

First, check your A/C is off. Check your fan relay. Is your motor temp in spec?

[@F-Arda]

@@alphadevyat Ac is off , even on the diagnostic shows AC is closed(I checked maybe because of there’s some cable issues). As I know there’s no fan relay , fan command is coming from DME. Engine even can’t reach operating temperature. Hours of driving it barely reaches 70 Celsius degrees.And its running at full speed at 14 it shows .

[@alphadevyat]

@@F-Arda if motor is not reaching the operating temperature I would definitely replace the thermostat although it does not trigger continuous fan application. Same goes for glow plugs or the controller (usually the issue). Bring it into a state of no errors and then investigate further. What car is it. Usually there is a fan relay but be interesting to check the diagrams.

[@F-Arda]

@@alphadevyat E63 6 series LCI EU version

[@alphadevyat]

@@F-Arda just checked there is a fan cutout relay for the fan. Any car 635d with 2007/03+ build has it. Look at the large plug on the fan shroud. Not far should be a relay. I could not find a part number. I would check that first.

[@zerocool123567]

i keep getting 41aa boost pressure fan, i have changed map sensor but still getting same code. any advice would be great. I also have cleared error but keeps coming back. cars in limp mode

[@alphadevyat]

What car 335d, X5 and what spec, US, Euro etc.

[@shammyali3895]

did you ever fix this issue

[@zerocool123567]

@shammyali3895 yes, leaking stock plastic intercooler.

[@shammyali3895]

@@zerocool123567 ahh okay, funny you said that i have just ordered a new upgraded intercooler today 😅 when you had leaking intercooler did you have poor fuel economy and notice the torque in low rpm isn't as strong?

[@zerocool123567]

@shammyali3895 can't say I really noticed a loss in tourqe. How I realised is the 535d always have a fair bit of oil in the hoses and at first I thought it was leaking hoses as I'd taken my under tray of and was getting oil on the drive. Each end of the intercooler, after removing the hoses and cleaning them I discovered it was the Intercooler. The aa41 leak drove me mad. Funny thing is car still run well.

[@Royobm]

Tengo que cambiarlos en un M57Y,no creia que era tanto trabajo, cuando apuro 4 velocidad por encima de 4000 rpm,me da fallo 428B

[@alphadevyat]

Royobm 428B a alta velocidad y altas revoluciones del motor puede ser un problema con el sensor de boost o un mal programa de la ECU

[@Royobm]

@@alphadevyat solo me pasa en alta velocidad, despues de reorogramar y anular dpf y egr,los tubos que estas quitando tu los tengo muy deteriorados, estoy esperando cambiarlos

[@alphadevyat]

Royobm ¿Dónde se encuentra y quién reprogramó su automóvil?

[@Royobm]

@@alphadevyat en España,un mecanico de "amigo",llevo años trabajando con el,en un X5 del taller,paso parecido,y cambiando los tubos de alta de silicona se solucionaba,si no le piso a tope en 4 velocidad, no lo hace

[@alphadevyat]

Royobm primero asegúrese de que su sistema de vacío sea perfecto, luego verifique el sensor de "refuerzo". después, si obtiene 428B, necesita obtener datos de su motor. Es fácil con Testo. Por favor mira nuestro video.

[@MrTarlamisaj]

Hello! Are you from Canada or Germany? Do you do any work on cars besides the videos? Thanks for your videos!!

[@alphadevyat]

Canada. Only work on my own and friends. Cheers.

[@undergroundlegend198]

Nonsense