Bmw valvetronic,Explained,Diagnosed,Fixed
ฝัง
- เผยแพร่เมื่อ 3 ต.ค. 2024
- In this video we diagnose a BMW with an intermittent valvetronic fault.
Actronics;
www.actronics....
Scantool used in the video;
Launch X431 PAD V ECU online programming scanner
Global link bit.ly/3v0VP9L
Ask a question about scantool bit.ly/3gbJtaR
DE www.amazon.de/...
ES www.amazon.es/...
For business inquiries (Not for technical questions);
Diagnosedan@gmail.com
YES! I did this job once and can’t wait to hear DD break it down. Already smashing the like button. Diagnose Dan never disappoints.
Thanks!
@@Diagnosedan Hi Dan
I have got the same car and I have changed the valvetronic motor and done the limit learn and it will work for a few days then through an engine check light. Recently it through a check light for the exhaust cam sensor and I replaced it with a new one but still notthing changed.
@@stevenfurayi8607 check the connectors to the 2 vanos solenoids, check and clean those solenoids using a toothbrush and brake clean (or similar), reinstall, reconnect properly and see whether it solves Your problem.
Dan you are awesome 👍
Aaaaah the lovely N46 engine. Between the endless valvetronic faults, valve stem seals made of cardboard, timing chain guides also made of cardboard and the endless oil and coolant leaks, there is never a dull moment with this one.
At least there is always work to do😅
Mechanics gotta eat too😆
@@ademc8872 🤣🤣
German engineering; job security for everyone.
@@kevinbarry71 🤣🤣
Thank you Dan, it's been waaayyyyy to long since your last video. Always looking forward to learning from you.
You are right Pierre it's been to long!
@@Diagnosedan thank you for this video I have the same problem
Я очень плохо знаю английский язык, но в этих видео всё понятно! Многому учусь от тебя, Dan. Привет из России!
Great to see another video, always a treat, showing what a real skilled tech is capable of where others have failed.
Thanks Mark
İ have never seen someone explained this much good information about valvetronic and why there is still throttle valve, thanks 👌
Dan - another great video. You take the complicated and make it seem like it's nothing so the rest of us can understand. You are truly an expert and superb instructor. Bedankt.
Wow thank you very much, your comment is really appriciated
Brilliant video. You are without question the best diagnostician on TH-cam. Too many people over complicate things. Thanks.
Thanks Trevor!😁
Wonderful job as always. Once I opened a motor for my curiosity and I've found a lot of brush dust inside. I disassembled and cleaned all inside, changed brushes with a new pair and assembled back. Resistance to ground disappeared! This experiment leads me to believe that the dust inside accumulated and started to conduct electricity and short to body (ground). Resistance should be infinite to body (OL) since brushed have no contact to body.
How do you open it?
@@pokkeljaan With an "L" Blade on bench vise and workaround with a small hammer where is closed
@@pokkeljaan th-cam.com/video/m6sNw1NJeJY/w-d-xo.html&ab_channel=EnduroShot
great comment, thanks man!
Thats a very logical explanation and a very smart and economic fix. New motors from BMW are painfully expensive! Where did you source the brushes from, and how did you open up the motor? Thats a worthwhile tutorial video in its self!
man really helping me out right now. my 320i goes into limp mode and now it wont turn iff. ill have to see if this works and if it does your a legend.
Great video and description of operation, Dan! How does this system make the engine more efficient? There is still pumping losses during the intake stroke because the intake valve is only slightly open 🤔 that was a lot of plastic too 😅
Pumping losses are reduced because the inlet manifold no longer has vacuum. In a normal engine the piston has to do work against the vacuum in the inlet manifold during the induction stroke, and because the inlet valve closes before the compression stroke this work is lost. With the valvetronic engine the piston has to do work creating a vacuum when there is a small valve opening, but this vacuum is contained only within the cylinder so the work is mostly recovered on the compression stroke.
Hi Ivan thanks for taking the time to leave a comment.
Because the valves open only a fraction of those of a conventional engine in some situations the air has to flow alot faster past the valves to fill the cylinders. The higher airspeed and the vortex that's created results in a better filling (volumetric efficiency) of the engine.
@@Diagnosedan Aaah that makes sense! The airspeed is key :)
@@ferrumignis Interesting theory! To me it seems like the amount of work done by the piston on the intake stroke is the same for either system, just that the restriction is in a different place (throttle body vs. intake valve). Once the intake valve is closed, the cylinder contains the same air mass in either case, so the same amount of work would be recovered on the compression stroke...right?
Also throttle response should be better as well since atmospheric pressure is right on the valve at all times instead of having to travel through the intake manifold
The diagnose with the multimeter on the old motor could be considered, but it might not be accurate, unless it's a weak spot prone to fail, but it can be considered in following fixes based on the same system, great content! Also very educative and detailed on how these systems work!
Outstanding video, it's easy for us "older mechanics" to get intimidated by "new stuff", but you explain it so well, thank you😎
Dan, im addicted to your videos. Your sense for detail is fantastic! Please dont stop!! :)
I'd be curious to know what the resistance to the motor housing is when it's warm. Being a pulse width modulation actuator, you wouldn't want any resistance to ground.
I have not checked🤭
Ricky, I assume you meant to say you WOULD want very a high resistance to ground (in the Mega ohms range)... basically insulated from the body... 🤔
It's no doubt that BMW messed up with the valtronic system especially on the 4 cylinder cars. Most common was the 320i, E90.
But you're good at your job, Dan. 👍👍👍👍
Everything was messed up on the 4 cylinder cars 😂😂
Dan, great learning experience as usual. now i understand the valvetronic technology & reason for its use. you are a real master at finding intermittent faults so quickly. the intermittent (temperature-related) failure of a dc (brush motor…my guess) showing as a finite resistance to gnd is interesting & something i would never have guessed as symptom (aren’t such components super reliable? seems not).
love the way you whisk off all those plastic engine covers with the cordless & use those fast ratchet ring spinners. why not leave the plastic covers off permanently & save all that work! sure, engine wouldn’t look so good & more exposure to dust & grease. (but that’s a discussion for another day).
regarding “valvetronic” technology & using inlet valve opening control instead of a butterfly to control an engine o/p, sounds like a great engineering project! but i worry about the extra mechanical/electrical complexity (& probable less reliability for a (small?) increase in efficiency). i’m curious if other manufacturers too use it. is the increased efficiency mainly at low airflow/output? guess that’s a different discussion for another day.
The motors are reliable, but can get burnt out from too much heat or eccentric shaft sticking. The motor is made by siemens vdo pretty good manufacturer.
Respect from sweden. My buddies at the shop keep talking about you daily.
Always excited for Dan’s new video.
Thanks Micheal
Dan you’re a genius, like most people I can’t work on or understand modern cars but not only do you describe it so well you go through all the problems that can cause the fault, you help me so much that whenever I do have a car problem I can explain it to the mechanic properly, ps he’s a bmw fanatic
Thanks for the great comment John
Actronics;
www.actronics.co.uk/
Scantool used in the video;
Launch X431 PAD V ECU online programming scanner
Global link bit.ly/3v0VP9L
Ask a question about scantool bit.ly/3gbJtaR
DE www.amazon.de/dp/B092LYKYF5
ES www.amazon.es/dp/B092LYKYF5
Is this the n46 engine and what year Dan I changed my vvt motor long ago still don't run
You never use Texa tester ? Work with Elektropartner
@@jotrastad9076 i've never worked with a Texa. Maybe in a future video
🇧🇷🇧🇷🇧🇷🇧🇷👏🏻, Dan you’re the best wow! I wish we had guys like you down here in Brazil…
Clever, clever, clever; very well explained!
Thank you Dan!
And yes low resistance to the body or case of any electric motor it is a bad sign that that motor is about to fail, if not already faulty.
The isolation resistance between windings and the case should be at least 1 Mega Ohms, if not more; tens of Mega Ohms.
Thanks for watching
Oh, I just put two and two together!
MEGER (Testing device)
Mega OHM
@@dans_Learning_Curve that's right; forgot to mention; that Megger it is an expensive tool, that sends a preset high-voltage in pulses down two wire or mediums with the intention of testing exactly that - isolation resistance between wires..
Well, it is good enough to just get no resistance between case an windings or between 2 different winding to get a high reading.. and that will, kind of eliminate a potential issue.
But as Dan is saying, with temperature, yeap, the insolation/wire will expannd and the isolation can change do to temperature..
A tester as the one above, it is good by using it to zapp higher voltage and physicaly destroy the isolation and make worse the isolation and conclude that probably that isolation was prone to fail. BUT that test should be done with caution because too high voltage is detrimental and has an irreversible effect!!
Just a word of caution when using a higher specialized tool.
A multimeter will measure the resistance by sending much, much lower current down the wires and verify the resistance of the medium..
@@dans_Learning_Curve Yeees! a insulation resistance tester o meger must be used to evaluate the condition of insulation of a motor, but if the fluke handheld tester measures something, you are screwed haha
@@MrFryfish exactly! beautiful explanation dude!
Glad to see that this car owner picked the best mechanic in firstplace, so they dident loose Money in a bad shop. :)
Thanks!😁👍
Great video, I love how great you are at explaining how everything works. Makes it easier to understand.
That's great to hear
Just changed one on freinds 2006 Rag Top on Tuesday for S/H one. Going to do Ohm's test on old one Tomorrow. I would have liked to test S/H one before fitting had I known. Great Tip.Thankyou Kindly.
Let me know what you found!
For those with other Valvetronic issues, wear in the eccentric shaft is common, but also the valvetronic position sensor can crack internally and leak oil into the connector. This would be the electrical plug you see by the oil filler cap.
You are right! Thanks for sharing
Would this cause smoke to come up everytime the car starts up and the smoke doesn’t smell like oil more or so like plastic ?
@@danielarevalo3525 I don't think so. If the smoke is very quick, it could be a belt slipping. Oil smoke can be common if the valve cover gasket is leaking, some oil will drip onto the exhaust manifold, and after 2-3 minutes when the manifold is hot enough, it will burn off the oil and then you usually won't see anything again until the next day where more oil drips over night.
The starter motor could have problems can cause electrical smoking on start up, but there's nothing particularly common to immediately start changing parts. Best option is to watch when someone else starts the car, and see if you can track down the location.
@@enda320 yeah im getting cylinder 3,5,6 and random misfire prob just the the coils or spark plugs, it only has smoke coming up when i turn the car on. The idle is deff like the video though
@@enda320 I’m getting this exact same fault code in my 2008 bmw 320i however it’s also missing engine makes strange noise when accelerating and starting sometimes and moving sluggish can a bad valvetronic motor cause these symptoms?
I guess I learn a lot today on bmw. Thank you.
The case test is absolutly definitive to condemn the motor, for the windings i prefer the load test with a high amperage bulb
Great video, Danny!
Thanks for the feedback Carlos
yes good test . failed motor . you as usual went the extra mile . thanks for sharing. learned something new. again thanks dan
Thanks David!
As always another master class!!!! Thank You!!!!
Thanks Jose
Thanks another great video. Many techs forget to do a wiggle test or to check if a wire can carry current.
Basics Nick👍
Dan, you been knocking down a lot of bratwurst lately.
You sound like my doctor 🤣🤣
Winter is approaching in Europe, gotta build up reserves.
@@moestrei 🤣🤣👍
So happy you did this video!!! I just did this job on a N55, but in this design both the sensor and the motor are one. Thank you for this learning video!! Keep it up 👍
Yes those motors fail in a different way😁
@@Diagnosedan in what way to be exact? Have a N55 myself so wanna be prepared😂
@@ademc8872 if a machine gun sound starts coming from the engine it's time to replace the Valvetronic motor on a N55😁
@@Diagnosedan haha zalig. Dankjewel voor de tip! Rond welk km gaan deze stuk?😆
Ok my N55 is now 8 years old and only about 68k mileage, The x5 started giving me odd codes about not knowing it’s position anymore. After reading the codes and a bit of research it became apparent that the sensor died on the motor and needed to be replaced. It’s was a very involved job..
Awsome video as always being a young tech everything you did helps me in learning how to diagnose and become a better tech thank you!!
Great video as usual :)
Absolutely yes, if the insulation failed the motor is gone.
Just the other day I had a similar issue on a coolant temp sensor on my car. While it was out of the car, worked fine. When screwed in it did not!
Turned out it had lost the isolation between its two terminals and chassis.
Thanks for the feedback!
You’ve just destroyed another myth calling these engines “ over-complicated “. In my eyes this engine is way less complicated than a V-tec engine for example…
As always,you’ve done a great job breaking it down so that everyone understands! 👌
These engines are really not complicated (if you know what you are doing)😁
No way.............you can give me a Honda V-tec any day of the week and twice on a Sunday lol but they rarely go wrong, only the the little gauze filter gets clogged or wrong grade of oil, easy fix.
@@paulrobinson3528 I wasn’t talking about reliability,but about the simplicity in design. The V-TEC is using solenoids and oil pressure to lock the camshaft on a longer duration lobe,while this engine has a simple extra camshaft driven by a worm gear motor.
@@nicknicu1787 It doesn't matter about how simple or complicated a design is in cars, its all about reliability, bmw's valvetronic and vanos systems are not reliable, hence why Dan is doing this video but i see what your saying.
Got to scream the V-tec to get it to go! Valvetronic allows max torque to come in at 2800 rpm, on the n52 BMW instead at 4500 rpm like a m52 or m54 six just to make them go.
Was waiting for a new one from the expert, thx
Sorry it took some time😁
Nice one Dan. I see alot of desinigrated ground straps on old BMW's. When these straps lose their capacity to flow current, bad things happen. The current tries to find an alternate path with up to 220 amps of arcing power. Electric motors get hot, arcing thru the driveline bearings... These ground straps are usually barried deep in the engine bay out of sight.
Thanks for the feedback
Amazing stuff as as always Dan, clear, concise & easy to follow.
Thanks alot!
As always pin point diagnosis not changing all sorts of parts guessing, I worked as a auto technician for 40+ years and would have really enjoyed working with you, I hate guess it merchants, you always do it right in my opinion. 👍 I was one that commented on the capacitor on those fans, I just knew there was more to it than a fan issue, thanks for updating us it makes me happy to know my brain still works.
🤣🤣 Well i listened to you, i hope your brain is satisfied 🤣 Even in the original Lexus Tsb they don't tell you what's wrong with the fan, so we went the extra mile😁
@@Diagnosedan 👍😁
Nice to see you back - seems some time since a new video appeared. (Subscriber).
I like how you talk through the problem and spend less time of every individual nut and bolt. Or I've got a scan tool.
You explain things logically.
And DID IT AGAIN.
DAN you are the most amazing Mechanic in the world. The effort and dedication is on a different level. You even sent the fans to be diagnosed and tested so you can let us all know and obviously satisfy your curiosity too. I wish you had more time to create more content for us. You are my idol and I hope that some day I am half as good mechanic as you are🤝
Thanks! That's appriciated. Nice BMW collection you've got!!
@@Diagnosedan 😊 Thank you. I love the older BMWs. I wish I can turn it into a full time job but for now I can only dream🥺. One question, if you can pick one diagnostic tool as your best "mate" in the garage, would it be the Launch X431 Pad V or something else? Autel may be? Thanks in advance
@@TheKeenMechanic the Launch used in this video can do programming on BMW. So when working on BMW i would prefer Launch but in general Autel and Launch are very closely matched
@@Diagnosedan Thank you. I mostly work on BMWs so your advice is very much appreciated🤝
@@TheKeenMechanic you are welcome buddy.
Also consider Subscribing to DDTSB we have got many repair solutions for BMW in the program, i'm 100% sure you'll love it. We also have qualified BMW techs on our helpdesk.
This was a good explanation of the valvetronic😀👍
Hey Danno, Great to see you again,,, I am chopping on the bit in anticipation!!
😁😁Great to have you here Dave
You are so entertaining that fixing valvetronic as 2nd to enjoying the show
🤣🤣
Great video Danny, as usual your videos are very informative, I’m a Beemer tech, situated in sa I always have spare valvetronic motors mixed up, now after watching this I realized that there’s actually a way of testing wether if the motor is functional or not. Gonna sort and label them as soon as I get to the shop. Thanks a lot buddy.
Let me know how many failed the test😁
@@Diagnosedan definitely
@@leonngobeni6735 how many?
Dan is back!!!!! Thank God! I love Dan!!!
Thanks Scott
Another great video Dan. Just remember, before removing the Valvetronic motor, one must relieve the tension on the return spring by either putting the Valvetronic in the “service” mode, or by manually relieving the tension with an Allen wrench through the little pin hole on the back of the Valvetronic motor unit.
I've done hundreds, always like this and never had a problem😁
The tension on the valvetronic cam gets relieved when you remove the valvetronic motor, the valvetronic cam can be moved by hand after the motor has been removed
I got a 320i 2005 and the valvetronic motor had no place on the back for a Allen wrench, even on the one that was replaced
I learn a lot from this channel
That's so great to hear!
They should have BMW valvetronic motors in vending machines. Right next to the oil filter housing gaskets and cooling system parts. ;)
Thanks for the video!
🤣🤣👍 thanks for watching Jimmy
That's funny shit right there, yet so very true.
Nice fault analysis but I need to correct you on something. You are partly correct about the purpose of the valvetronic. It’s not there as a secondary throttle control. Throttle control is solely done via the throttle body. The purpose of the valvetronic unit (as you sort of indicated) is to open the valve further to let more air in as the revs rise. Its purpose is to increase power it’s not a fuel efficiency device. As you push the throttle down the throttle body opens, the ECU controls the valvetronic device to give the inlet valves more throw so as to let more air in, the fuel injectors adjust to let more fuel in. The Vanos unit is seperate, it advances the camshaft to open the inlet valve earlier when revs rise. The engine with the faulty valvetronic unit would not reach full power because the valves would not have been permitted full throw. For normal driving this would not have been noticed, but the engine would not have reached its full output potential. Hope this makes sense to you
Nice to see electronics repaired instead of thrown out.
Thanks Mike!
very good explaination about valvetronic motor. thanks.
Great video! Straight forward diagnosis.
Thanks Stephen
God bless you for this wonderful information . thanks for sharing
Hi Dan. I have a similar BMW E90 2009 LCI N46N 4 CYLINDER engine. I am suffering from high oil consumption (One Litre per 1000 km) and also the engine oil is getting contaminated and very dirty within 200 km ( I am using Liqui Moly 5 W 30).
I have changed the PCV valve diaphragm with the spring.
The PCV is located on the valve cover & the engine has 182,000 km.
I have replaced the valve stem seals before 5,000 km with new head gasket,
But i am still having oil consumption & both suction on the oil cup when opening and high pressure when the oil cup is open.
Beginning of this summer I removed the Thermostat as I am living in (Kurdistan-Iraq) where ambient Temperature reaches 47 °C. Now engine coolant Temperature is around 78 °C where the Thermostat is opening on 105 °C ( I will put back the thermostat tomorrow and update you).
I will appreciate any suggestions and diagnostics procedures.
Looks like piston rings, but I'm just speculating.
You proberbly have leaking valve seals
@@mr_nice. I will do both dry & wet compression test to verify the condition of the rings.
@@Diagnosedan I changed the valve stem seals with new head gasket before 5,000 km .
Thank You So Much For That Explanation, Highly Appreciate That
Reason you get a reading is there is a carbon build up in DC motots where the brushes ware down and have no where to emit the powder or dusty so builds up and cause a leakage
my guess you open the motor and clean it it would be better but 80% efficient
Very good tutaorial sir. But I have a question: when motor was failing you see errors in computer - were these errors visible before you started your activities?
Great video Dan I believe random engine check light on BMW's is standard equipment
🤣🤣👍
Dan, love your videos always learning from you.
I am thinking that with time perhaps the insulation on the motor windings fail and create an electrical path to the armature, then to the motor bearing that sits on the motor casing.
That can account for relatively low resistance between motor brush and the casing. Would be interesting to see how heat or lack of heat affect the 2800 ohms you were seeing on the multimeter.
Thank you Dan, great job.
Thanks Dan. I'd love to see more videos from you. Terrific job!
The chassis to winding resistance in itself is not critical for such a low voltage motor, but there should be an open between the two in this motor as it is not ground connected. Also, the fact that the new one is basically an open, and old one fails when hot, tells us, that there is something inside that makes a short as it expand when it heats up, and from there is positive feedback loop, very bad.
If this motor is a known failure, then maybe the design of its winding is too close to chassis, heats up too much, bad insulation in general to make it small, etc. Is there a maintenance notification from BMW about new version of this part? ie "enhanced version".
Not a BMW expert at all here.
Great video as always, the best car mechanic in YT that teaches us a lot.
It looks like the dust from the brushes that's trapped inside the motor creates a path to the body
@@Diagnosedan Very interesting, but that would not make the motor fail when hot. For sure not good, but the resitance you measured (~2.8k IIRC) is nothing for the motor controller.
Maybe it shows how worn the carbons are, and due to that it fails when hot. Guessing here.
Hey Dan your knowledge and logical thinking always amazes me. I’m a tech i Ian and have been looking at buying my own scan tool. What’s your opinion of the bi directional controlling autel models? Or would you recommend another scan tool.
Autel or the Launch used in this video are great scantools
Welcome back.
Excellent explanation as ever 👍
Thanks!
I have been getting into the valvetronic system on an S63TU from an M Sport X5 50i whilst replacing the valve stem seals because of a smoky engine, it is not a very complicated system as most people think it is.
Great video Dan. Regarding the bench test of the motor I don't believe the insulation resistance test was valid to condem that motor as faulty solely based on that reading, 2.8mohm on a 12v system is negligible. The DME can't pop a code based on that I very much doubt. However I expect if you did the same test and applied heat you would see that resistance decrease significantly. Also the fault code couldn't be generated by detecting that high resistance to earth/body. The fault must be a measurement of the motor internal resistance only. More likely a complete open circuit situation for the motor to run and not run at all when warm, if stripped a bad connection or soldered joint would be the culprit I reckon. Thanks again for these great videos, I aspire to be at your level.
Thank you very much for this video am very happy to watch you again please continue 🙏 😊 ❤
That's great to hear!
Duidelijk verhaal weer, bedankt voor weer een les!
Bedankt Cees
When you test motor windings you generally do a winding resistance test between the two pins to establish the value of the actual winding and then you also conduct whats called an insulation resistance test which is basically the test you performed. However when you do an insulation resistance test you use a Meg ohm meter that puts a voltage into the winding which on ac motors is at double the line voltage typically 500 or 1000v dc and the meter indicates in Meg ohms the insulation resistance which is in millions of ohms. It is basically a stress test that indicates whether the windings are shorted to earth or the metal housing of the motor. For an insulation resistance test to indicate leakage in the K ohm it would seem to be pretty a bad indication. Moisture in the motor is a very common reason for low insulation resistance and in the case of these motor possibly ingress of oil and carbon from the engine itself, On larger motors they can be dismantled and cleaned out and in some cases the windings can be re varnished and then re-baked to restore the insulation.
I would apply voltage using a power probe on that suspected poorly insulated pin to the motor winding and the case. You can read the voltage drop and potentially pop the breaker on the tester confirming the failed insulation. The meter doesn’t pass enough current/voltage through the motor hence not duplicating normal operating conditons
Man congratulations master class as always thanks for sharing
Thanks Emilio
Great video as always.
Thanks!
If the valvetronic fail in a closed position then (I guess) the throttle can't do much. It's more like a way to prevent unintended acceleration due to valvetronic failure? Like the throttle in diesel engines?
No fly's on you Dan well sorted love to see more of you but I guess your a busy man 😀😁
I try to upload a new video as often as i can. But i agree, this time it took to long!
Hello DiagnoseDan. This video is a little old but I have a couple of codes from my car and they happen every now and then. P1050 and P1062. The engine is n46 on a 1 series. When the codes appear, the car goes into limp mode and an orange engine light appears. When I erase the codes, the car runs alright for weeks and it happens again. The other problem is that the car hesitates when throttle is pressed. I have to press it slowly to get it going.
Good teaching. I think the brushes are worn out and that is the cause.
You are proberbly right
Great vid😄👍Valvetronic , vanos, i’m going EV🙂
Great video Dan! Im looking forward on replacing the valvetronic motor on my n52 engine myself. However, how exactly do you relearn the motor so it knows whats fully open/closed??
Great video as always!!!Cheers Dan !
Thanks very much Dan for another interesting video, so well explained ☺
Thanks Gareth
My bmw z4 is having EML light on 😓
Timing chain, Valvetronic and solenoid valves and camshaft exhaust sensor are recently changed..
The error code showing are P1050 and P1062.
I need to tackle the valvetronic on my n42. Have had it unplugged for the past 60k km or so. Hope it’s just the adjuster motor…
Edit: nice video Dan
You don't need to remove the valve cover to test it.
Read the faultcodes and see if they are the same as in this video
@@Diagnosedan I think it’s the same issue. Once hot it starts idling poorly and sometimes even shuts off. No check engine light though. So I just unplugged it which you can do on manual transmission n42s. Definitely less torque below 3000rpm. Will clear the codes and plug it back in to see what comes up in the log. Cheers Dan.
Perfect Dan as usual , thanks
Thanks!
KrankCrase Dan, been missing your videos buddy.
🤣🤣👍
Wow, very well made and educational video!
Thanks!
Excelente. Y que medidas debe tener el eje excéntrico en RALENTÍ y acelerado? Mirando en el escáner
If this motor is a brushless type with electronics built in (like the fan motors you showed) then yes your test is right and there is a short or at least moisture gotten in. For brushed motors 2.8kOhm resistance to the housing could also be just carbon dust due to wear.
It's a brushed motor
Двигатель valvetronic с щетками
I've been looking everywhere for a good video that properly explains valvetronic motor issues, and now I've found one. Cheers
Great way of fault finding.The insulation resistance on the vanos motor shouldn't be less than 1Mohm!:)
Thanks for the feedback
Thx so much here in argentina, is really hard find the disgnosis...this kind of fail can simply no start the car? Sorry about my english
Dan, where have you been?? I always enjoy your informative videos. Thought we lost you over the past months. Hope you are well.
I know it's been to long!
Dan,you are fantastic!
Hans van leersum.
Bedankt Hans!
How did you know that the test light is safe to the ecu?
Let me say, this was the best diagnostics video I've seen - Well done, Dan!
i need this.. i have a general understanding of what its doing, but would love some in depth details.
I hope it helped a little!
Awesome diagnosis!!
Thanks Angel
Hi Dan, good to see you post again!
Dan should there not be a caution for interference engines?
Thanks for watching, i'm not 100% sure what you mean
@@Diagnosedan That engine is a noninterference design but other BM's are interference where the valves may smack the piston tops.
Or am I out to lunch (again)
I had the same thought, but thinking further it seems to me the only valve that would open further is the one that is already partially open, thus the piston is already on the way down
@@lesbender236 I could be off the mark but seems to me the 8 cyl with the same vamos are interfering engines as well as the 4's?
can the engine run and work without the valvetronic system? and what is the risk of removing or bypassing the system?