The BMW VANOS System EXPLAINED! | Symptoms, Repair, & More
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- Опубліковано 28 жов 2023
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The Vanos system in BMW vehicles, synonymous with the brand's quest for engineering excellence, is a marvel of modern automobile design. But what exactly is the VANOS system? How does it work, and what happens when it fails? Dive deep with Jake as he uncovers the intricacies of the BMW VANOS system, the different types of VANOS systems, explaining symptoms, and offering solutions to keep it running smoothly. Whether you're a seasoned BMW owner, a budding mechanic, or simply an automobile enthusiast, this guide sheds light on BMW's VANOS system. Come journey with us through the heart of your engine, learning not just about problems, but more importantly, their solutions.
If you would like to read more about the BMW VANOS system, we have plenty of content on our BMW Tuning Website: bmwtuning.co/vanos-problems-s...
bmwtuning.co/vanos-solenoid-r...
bmwtuning.co/diagnosing-a-fai...
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00:25 - BMW VANOS Introduction & Video Outline
01:13 - What is BMW’s VANOS System?
01:20 - What is Variable Valve Timing
01:39 - How Does the BMW VANOS System Work?
02:27 - The Different Types of VANOS Systems
02:55 - What is BMW’s Valvetronic?
03:14 - Breaking Down Each Type of BMW’s VANOS Systems
03:48 - Single VANOS System - Symptoms, Engine Codes, and Replacement Options
04:43 - Dual VANOS System - Symptoms, Engine Codes, and Replacement Options
06:17 - Dual VANOS w/ Valvetronic System - Symptoms, Engine Codes, and Replacement Options
07:33 - How to Diagnose & Fix the BMW VANOS System
09:01 - BMW VANOS System Conclusion - Авто та транспорт
On the B group/generation engines and some late N63 I believe, Valvetronic and Vanos is used as the "throttle" while the actual butterfly valve stays open, maintaining positive manifold pressure!
Gen - Thanks for the insight.
Just got a recall (23V-707). VANOS Assembly Engine Bolts. Anyone have this work done? Is it the bolts that hold the assembly to engine? No warning lights so far on my 2010 Z4 3.0 but occasionally a whirring sound that I thought was loose belt. Car experiences a hesitation form stop light but not in sport mode. I'm thinking a loose or broken bolt has caused main gear to brush up against VANOS unit housing.
I have an N55 135i that has started having these symptoms and I initially replaced the spark plugs, turned out they needed replacing but it didn't solve the issue. Looks like solenoids are next! I'm glad I watched the video because most of what I could find in the forums had me considering a full actuator and eccentric shaft replacement.
Mar - Glad we could help! Unfortunately, just have to do things one at a time in hopes it fixes the problem. Keep us updated!
@@8020Media replaced the VANOS solenoids today and the improvement was immediate. No rough idle and no ‘stuttering’ at low speed. It’s a pretty simple DIY job as well. Thanks guys!
Mar - Thanks for the feedback and sharing your experience! Glad we could help.
Wish you would of elaborated more on issues with bmw vanos solenoid without any codes. Changed the spark plugs and coils. I guess I will just clean the solenoids and see if that helps the hesitation.
A - We have a whole nother video for this: ua-cam.com/video/1AVYtMrlvpE/v-deo.html
You can rebuild (replace the seals) the VANOS ON THE M62TU. That said, you may as well redo the timing chain guides at the same time. PITA..
Chris - Great insight here! Thanks for sharing.
Think that you forget to mention about the N46N have a dual Vanos with a valvetronic system. Since 2007 in the market
Y - Thanks for sharing this insight.
Cheers brother.. I have a well maintained E46 320ci coupe...
However on a cold day or if she hasn't been run after a week. I start it up and it's missing fire in all cylinders... To fix I just switch her off, count to 5, start her up... And it's fixed?
Any ideas and thanks for the detail in your channel ✅
Jade 🇦🇺
Jade - Thanks for the feedback! Based on the symptoms you're experiencing, here are a few things we think you should look into: the coolant temp sensor, fuel pump, spark plugs/ignition coils, VANOS solenoids, or a vacuum leak.
i have a 99' 323I E36 coupe, getting P1525 and P0335 codes, causes rough idle, sounds like a misfire but its not, slow throttle. dont know what it is, any ideas?
Brayden - It's one of two things. The VANOS solenoid or camshaft pos sensor
The vanos non return valves also give you vanos codes, after I changed both vanos solenoids in my car I still had the rough idle, cleaned my non return valves and bingo, smooth as hell
Thanks for the helpful additional info!
Hey man enjoy your videos but let talk about the valve cover gasket in N63TU1 BMW. HOW TO STOP THIS PROBLEM FROM COMING BACK@@8020Media
could you do one aboutthe valve seal on Bmw 750li
B - Thanks for the feedback. We'll add this to the list.
B - We'll add this to the list.
I recently did vanos rebuild on e46 330i just after the rebuild car started up weird and misfire on all cylinders but when driving it has more power than before but stalls at redlight and at idle it misfire with a knocking sound exhaust sound fine also better than before so im not sure what my problem is any help would be very helpfull
Shir - Do you have any engine codes?
@8020Media No engine codes only multiple cylinder misfires I'm using thinkdiag 2 scan tool sometimes when I drive with ac on than the weird noises dissappear and engine running much smoother
did you accidentally move the timing chain maybe? i heard some people accidentally move it and it messes with the car badly
Hi, wanted to get your thoughts please! I'm trying to figure out the solution to flashing check engine light, drivetrain malfunction error and misfires on my 2013 328i n26 85k miles. Codes are 130304, 131401, 131808 pointing to VANOS issues on exhaust side. Car sat for 6 months. Changed oil, charged battery and engine started right up and ran smooth but soon started misfiring. The ex solenoid tests good with direct voltage so could it be the sensor? Also could bad plugs cause those codes? Had a leaking turbo oil return line and lots of exhaust smoke but that's getting fixed today at the dealer under recall. I'd hate to waste time and money on a Vanos actuator gear replacement only to discover that doesn't fix the misfires. Thanks for any ideas. (oh dealer wants to charge me $295 for a full diagnostic but not sure that's money well spent when I already have a decent bi-directional scanner.
I'm guessing you have an issue with the solenoids, even though they're testing fine power wise its possible one is a bit clogged or gunked up. They are easy to replace so I'd recommend just getting a cheap replacement one, like URO and trying that. It could be a sensor issue but you'd probably notice more material symptoms than just some misfires if its the cam position sensor. If it's misfiring really bad then it could be. The last and probably least likely thing is it can be an issue with cam timing with the cam blocking rings but I'd say this isn't very likely. Also, I don't think it's this but this is worth looking at: static.nhtsa.gov/odi/tsbs/2014/SB-10053485-8362.pdf this is most common after a timing chain replacement
@@8020Media Ok, thanks. Dealer said they wanted to remove valve cover to inspect Vanos unit based on the fault codes so that's where I'll likely go if no change from a solenoid swap. I assume the software is updated since the SB you provided is from 2014 but will check if dealer can confirm if that was done. Actually drove the car today for the first time and a weird humming noise started coming from the engine. Removed the oil cap and it stopped. Definitely suction there. Now I know why someone drilled a hole in the oil cap as a workaround which I had covered up with a piece of tape. Time for a new valve cover. Cant just replace the PCV like on the N20.
Keep us updated!
@@8020Media Hello again!! I pulled the valve cover and exhaust cam timing was way off like 15-20 deg! I had to loosen the central valve bolts to adjust and re-time it with the locking tool. When rotating the engine to check though I noticed the ex cam gear vanos unit jumps or skips a little bit but remains in time when I bring it back to TDC. The intake side does not do that! Suspecting it to be faulty, I bought a used ebay replacement gear (guaranteed working good they said) and installed it and it does the same exact thing. I will try swapping the central valve bolt but not sure that would matter. Would appreciated any advise here...Thanks!
Just an update, I went with a new ex cam gear and now it runs good. Valvetronic servo motor makes clicking noise for a few seconds sometimes when car door is opened but does not seem to affect
performance.
The diagnosis says this“VANOS (Variable Camshaft Timing), inlet, actuator movement” what could be the problem?
What engine do you have? Probably vanos solenoids if I had to guess but depends on the engine
Vanos alone is just VVT, VTEC would be VVT and VVL (phaser).. Valvetronic would be VVL
Gen - Thanks for the insight.
Hi,quick question. How about if you get an EML light with engine light but no codes and rough idle and it’s stalling with loss of power when you accelerate it only goes up to 2000 RPM and it goes back down to zero and it stalls?
T - We have a video for engine stalls that may help here: ua-cam.com/video/7bqAIbYRdnc/v-deo.html
What have you done so far?
Thank you for the reply. Well, i have tried cleaning the idle air control valve. Checked the coils they all passed. What gets me is i have the eml light. But no codes and no engine light. Its misfiring feel no power and if let off it stalls.
T - Check the spark plugs and the things we cover in the stalling video. Keep us updated.
Ok that is my next step. But it so confusing. I found differen gap sizes on bimmer forum. When i pulled the spark plugs. It was gapped at 0.044 but they said its 0.032, 0.040. So i tried both, on 0.032 ti wouldn’t even run. On 0.040 it idled bad soni put it back to 0.044. All my coils are good tho but still misfiring. Could bad camshaft cam and exhaust caused misfire?
T - Have you pulled any engine codes?
BMW came out with Valvetronic well before 2010, My 2006 E86 3.0 N52 engine has double Vanos and Valvetronic! 😂
S - Thanks for the insight.
Vanos is not like VTEC one bit, VTEC is variable cam lift almost, there's effectively a high and a low cam on the car, and the engine switches between a high lift camshaft and a low lift camshaft (even though both are on the same cam). Vtec isn't really anywhere else as far as I'm aware. Every brand has variable valve timing at this point, once again not the same as VTEC. Valvetronic is much more similar to VTEC, but then again, VTEC has been here since way before.
I wasn't getting into the similarities and differences here, but yes they are somewhat different. VTEC literally stands for Variable Valve Timing & Lift Electronic Control. They all do the same shit, they just work differently. But I get your point
VTEC is Variable valve lift, not just timing….
T - Thanks for the insight.
Yea and also hondas last forever lol unlike the "ultimate driving machine" 😂@8020Media
I’m getting code 131508 and 131408 for 2011 bmw 528i
Buss - Here's a great thread for your research: www.justanswer.com/bmw/l50oz-idle-fluctuations-startup-sets-131508-code.html
It’s give me a check engine light
That link you send me is bmw x3 there are talking about
I'm not to sure but depending on year the engines might be the same so just make sure they are the same engine and you should be fine and worse comes to worse scour the forms
@@justicecummings5613 I got a n52/f10 engine
What about 2D60
Jo - What about it/
@@8020Media what does it mean i have 2D60 2C58 codes but i think they have to do with vanos but not sure it seem like im the only persone that gotten this
Ehm… the N46 and N62 already had valvetronic. That’s 2004, 2003 perhaps. Not 2010.
P - thanks for the added insight.
BMW lads don't brag about the Vanos because they suck and crash so many times like every other German engineered product.
and I can say that because I own a BMW.
G - Not wrong. lol
Valvetronic came out in 2001.
B - Thanks for the insight.
It's useless variable valve timing. Everyone did it and some of those engines run better without it. Lol
C - We think there are pros and cons of the system, but thanks for sharing your opinion!
I wouldn't say it's useless that's like saying a big cam in a v8 is useless this is best of both worlds