Thank you so much for this video, and the others in the series, it helped me a lot. I'm currently working on replacing the PCV valve on my son's E91 320i Touring which he have had so much trouble with. When working I managed to successfully removed the two "impossible" T30 bolts underneat the far end of the intake without going in from underneath. I did this my taking a T30 bit and putting it in a 1/4" ring spanner (I don't know if that is the right name, but a spanner with a U in one end and an O in the other - sort of). The T30 bit is then hold in place by two short pieces of tube (about 3 mm long) that pressfit over the T30 bit. By doing this you can reach into this tigh spot without dropping anything. You can hardly see anything, but it's pretty easy to work by feeling around a bit. The bolts are not fastned particularly hard, so it should be OK. Worked for me.
Mission accomplished, PCV valve changed and the car is back in working condition again. I did the same observation regarding the O-rings, that they almost seems oversize. I had to replace the new ones with O-rings from the old original set both where the new unit connected to the metal pipe from the engine block, but also at the end where the new pipe meets the overhead rocker/cam cover. I wouldn't dare pushing any harder to avoid breaking the new hoses. The new pipes fitted in all ends where it met the new PCV valve, but not where it should meet the old car. Weird. Luckily the condition of the old O-rings seemed OK.
I don't think your problem related to hardware Please check following: 1-OBD fuse in the fuse box 2-If rubber seal is bad under the windshield, water somehow finds a way to ecu. Cleaning the ecu socket with brake cleaner or contact spray sorts the problem. 3-Fuel pump may be failed which doesn't throw fault code. 4-You can manually spray gas to throttle valve while cranking to see if ignition is ok. Do you have any weirdness at cabin electronics? Do you have water at passenger side carpet?
Thanks for this. I think you’re on the mark with the ECU - it’s currently off for repair but they’ve opened it up to find water damage so I’m getting a new one!
@@DaveReevesVXRhey Dave - do post an update to hear on progress/resolution- I’m also experiencing crank no start with no tach reading while cranking and have changed crankshaft sensor -thx
It was the ECU in the end (see th-cam.com/video/GLnZ9dcvFs4/w-d-xo.htmlsi=cXwOZYHMZct9moxU). I’d actually changed the eccentric shaft sensor a couple of years back when dealing with valvetronic issues
I’ve currently can’t communicate with the engine ECU. I have since used ISTA and can communicate with other computers in the car and various codes re lack of comms with engine ECU… so ECU is currently where my focus lies!
@@DaveReevesVXR I had my ECU throwing wobblies Dave it was simply due to rain water getting into the housing. I too threw money on sensors etc etc. Not sure if this is a E90 thing.
104k miles. It doesn’t smoke badly, I’ve never noticed any myself but it has been commented on when someone was following me a few months back. If the PCV value doesn’t cure the oil consumption then value seals will be my next attack I think.
What’s the code description? A quick Google suggests the codes relate to the MAF but my experience with the E90 has taught me that some codes are manufacture specific so may not be MAF related.
Hi Dave. I experienced the same issue a week ago. I initially thought it was the ABS sensors or something related but a mechanic confirmed those errors wouldnt prevent the car from starting. Eventually I removed the ECU cover and there was water at bottom of ECU box. Dismantled the ECU and water was inside ECU as well as corrosion on ICS and components. I purchased replacement ECU and car started right up. Water got into the box as the windscreen bottom trim wasn't installed correctly a few weeks ago by Windscreen glass replacement company in Durban and hence water wasn't channeled away from ECU box. Hope this helps. Cheers
![[MV] A leap of faith...ความเชื่อใจครั้งสุดท้าย (From "Petrichor the series")](http://i.ytimg.com/vi/U1piZH2CNXA/mqdefault.jpg)
![How To Replace The Crankcase Ventilation Valve [CCV or PCV] On A BMW N52 Engine (E90, E91, E60)](/img/n.gif)
Thank you so much for this video, and the others in the series, it helped me a lot. I'm currently working on replacing the PCV valve on my son's E91 320i Touring which he have had so much trouble with. When working I managed to successfully removed the two "impossible" T30 bolts underneat the far end of the intake without going in from underneath. I did this my taking a T30 bit and putting it in a 1/4" ring spanner (I don't know if that is the right name, but a spanner with a U in one end and an O in the other - sort of). The T30 bit is then hold in place by two short pieces of tube (about 3 mm long) that pressfit over the T30 bit. By doing this you can reach into this tigh spot without dropping anything. You can hardly see anything, but it's pretty easy to work by feeling around a bit. The bolts are not fastned particularly hard, so it should be OK. Worked for me.
Thanks for the comment and useful to know you don’t need to get on the floor! Great to think my videos make a difference!
Mission accomplished, PCV valve changed and the car is back in working condition again. I did the same observation regarding the O-rings, that they almost seems oversize. I had to replace the new ones with O-rings from the old original set both where the new unit connected to the metal pipe from the engine block, but also at the end where the new pipe meets the overhead rocker/cam cover. I wouldn't dare pushing any harder to avoid breaking the new hoses. The new pipes fitted in all ends where it met the new PCV valve, but not where it should meet the old car. Weird. Luckily the condition of the old O-rings seemed OK.
Well done! Odd re the o-rings. I recall trying pretty hard with lube etc to get them to fit but it wasn’t having it!
I've just bought a new CCV or PCV or whatever valve and I was really hoping for your engine to run after that...!
As was I (obviously!) but check out the next video….th-cam.com/video/GLnZ9dcvFs4/w-d-xo.htmlsi=xlM23J2RAmMo-qan
the best part "it's really confusing PVC PCV" . 😁
I’m here for your entertainment!
I don't think your problem related to hardware
Please check following:
1-OBD fuse in the fuse box
2-If rubber seal is bad under the windshield, water somehow finds a way to ecu. Cleaning the ecu socket with brake cleaner or contact spray sorts the problem.
3-Fuel pump may be failed which doesn't throw fault code.
4-You can manually spray gas to throttle valve while cranking to see if ignition is ok.
Do you have any weirdness at cabin electronics?
Do you have water at passenger side carpet?
Thanks for this. I think you’re on the mark with the ECU - it’s currently off for repair but they’ve opened it up to find water damage so I’m getting a new one!
@@DaveReevesVXR unfortunately e90 has much weaker ecu box than e46.
Will you get a ecu, immobiliser and key set ?
They tell me they will be able to program the new ECU and it will plug and play! We shall see…
@@DaveReevesVXRhey Dave - do post an update to hear on progress/resolution- I’m also experiencing crank no start with no tach reading while cranking and have changed crankshaft sensor -thx
I’m working on the solution and next video - hoping to upload in the next few days - should be before Wednesday!
Change your eccentric shaft sensor bro
It was the ECU in the end (see th-cam.com/video/GLnZ9dcvFs4/w-d-xo.htmlsi=cXwOZYHMZct9moxU). I’d actually changed the eccentric shaft sensor a couple of years back when dealing with valvetronic issues
Did the car show any codes when connected to a code reader?
I’ve currently can’t communicate with the engine ECU. I have since used ISTA and can communicate with other computers in the car and various codes re lack of comms with engine ECU… so ECU is currently where my focus lies!
@@DaveReevesVXR I had my ECU throwing wobblies Dave it was simply due to rain water getting into the housing. I too threw money on sensors etc etc. Not sure if this is a E90 thing.
Thanks that’s useful to know! ecutesting.com lists common faults and one where my symptoms are consistent with E90 ECU failure so here’s hoping 🤞🏼
How many miles ?is it smoking badly? if so valve stem seals will definately need changing,did mine last year.
104k miles. It doesn’t smoke badly, I’ve never noticed any myself but it has been commented on when someone was following me a few months back. If the PCV value doesn’t cure the oil consumption then value seals will be my next attack I think.
Check the fuel rail for fuel rail pressure
Thanks - if ECU doesn’t fix it I will do this
Please check ire icy fuse is 30A a big one green in colour
Thanks for taking the time to help - I’ve actually sorted it now (see next video if you’re interested)!
tnx so much for video... I have same e90 and codes : P1100 and P 1101.. if you can help me.
What’s the code description? A quick Google suggests the codes relate to the MAF but my experience with the E90 has taught me that some codes are manufacture specific so may not be MAF related.
@@DaveReevesVXR , tnx indeed. I cheched MAF and with new Replaced it.. codes still alive. ( air system gone to sniffing I think )
So you are confident the code relates to MAF? Possible vacuum or intake leak? Issue with PCV valve? O2 sensors?
@@DaveReevesVXR yes I have o2 P0155 and P0159 codes .. also quality of fuel is not good I think.
Thanks for the video, hope. You find a fix.
Thanks - me too!
Hi Dave. I experienced the same issue a week ago. I initially thought it was the ABS sensors or something related but a mechanic confirmed those errors wouldnt prevent the car from starting. Eventually I removed the ECU cover and there was water at bottom of ECU box. Dismantled the ECU and water was inside ECU as well as corrosion on ICS and components. I purchased replacement ECU and car started right up. Water got into the box as the windscreen bottom trim wasn't installed correctly a few weeks ago by Windscreen glass replacement company in Durban and hence water wasn't channeled away from ECU box.
Hope this helps. Cheers
Hey - thanks for taking the time to write that. It’s very helpful and you are spot on! I’m hoping to get the next video on this out later tonight…
Check your petrol pump
If it’s not the ECU that will be one of the next things to look at for sure