Swirl Flap Motor BYPASS on JEEP / MERCEDES Engine OM642 (FIX Limp Mode)

Hi, this 'how to' video shows an in depth installation of an emulator (resistor mod) on a OM642 engine (3.0 CRD) commonly found on various vehicles (Jeep/Mercedes/Dodge/Chrysler) commonly manufactured between 2005-2010. The vehicle in the video is a 2008 Jeep Grand Cherokee.
This will allow your vehicle to come out of limp mode by tricking it into thinking the swirl flap motor is still functioning. Once fitted the car will not perform as well (not as good low speed engine performance/fuel economy/emissions) but in 'real world' driving you will be unlikely to notice any difference.
Here is the UK eBay Affiliate link for the Bypass Emulator ebay.to/2GriAAk
Remember this is a workaround to get your vehicle going again. Obviously it would be better to replace the failed swirl flap motor, but access to it can be time consuming. If you are getting the garage to do the work it may not be cost effective, OR maybe you need to save up the money, and this resistor trick will get you motoring again until the funds allow the proper fix.
Many thanks, Vince :-)

[@curiousottman]

Exceptionally well done. Remember: do not over tighten the air intake clamps at the turbo. That plastic can break easily especially when old. Costly to replace.

[@solveit1304]

Always it's nice watching you repair car. Also I love that you said every screw sizes - I hate when automotive videos don't mention that.

[@doringherman3216]

Great, GREAT description. very helpful. better explanation than all you can hear or see on youtube. Well DONE!

[@georgeclegg9597]

Great video Vince, nice, clear and easy to follow.

[@Peter-it5ht]

4 or 5 years now I done this fix and its still working fine ,I don't even think about it now.

[@ktserver4164]

You're the best KZbinr ever, absolutely professional output, like a high school professor, so clear, so easy...Thank you very much indeed

[@jackwilson5844]

just done this to my 2008 ml280 , works great , its been in limp mode for agers , thanks for the great video bud

[@Skyline_4727]

I really like your automotive videos, please keep them coming

[@colinaglae9753]

Thanx Vince, for the informative Bypass Emulator fitting, on the OM642 engine !!

[@hardihardi8692]

Where do u get them from

[@thomastownsend3488]

Great educational video Vince simple and well laid out for both professionals and novice.Thanks again and keep your style for other videos please!

[@kazzrich]

Excellent. Couldn’t get the emulator local in remote Western Australia but I did fit a 4.7k ohm resister to the plug. Fixed the problem and now gets more boost (power). Saved me over $2000.

[@oletommyjrgensen5630]

Did you put the in the hol 3 and 4?

[@Thecreekysailboat]

It looks like there are variations to this resistor like different watts etc. which one did you use?

[@em4703]

@@Thecreekysailboat I doubt it matters, the controller input uses very little power, you just want the computer to see that something consumes a bit of electricity when it sends the signal to move the flaps, that's it.

[@kailange1391]

Thanks for good detailed explanation of every single step. Thats the way I like video tutorials.

[@joesanchez979]

That's a great tech tip not only for jeep owners but other vehicles

[@theinkedgamer1703]

man of many talents , well in vin

[@jawmedia7575]

Hose clamps Vince! What in the world jubilee clip? Never heard of such a critter. Awesome that you've made a vid of working on a vehicle

[@ianhaylock7409]

Jubilee brand are the original hose clamp manufacturer.

[@jawmedia7575]

@@ianhaylock7409 learned something new thanks bud

[@abesmith8642]

We had a similar issue with a ford galaxy it was the EGR VALVE but we blocked it off with a blanking plate It had the same issue with lack of power Great video vince

[@adamh2156]

Thanks a lot for this film, excelent job. I had the same problem in Chrysler 300C 3.0 CRD and I put the 4.7 kOhm resistor into the plug with hot glue and tape and it works total cost about 0,5EUR.

[@richardhemingway6084]

Likewise. Perfect fix.

[@BadeaIonel-xz3lx]

I have the same car where did you buy the resistor?

[@AllisterPotter]

Fitted the resistor to my Jeep WK yesterday, incredible work around, would recommend it.

[@pachecobrandon29]

Where do you get this resistor

[@joshuakakompe623]

Any difference in performance?

[@em4703]

The rails that move all the flaps on both intake banks were broken on my vehicle, replaced the entire intake with brand new parts (vehicle still had the original factory PCV valve, never changed, so that was probably the source of all the carbon....). I just ordered this resistor dongle from ebay and put it on, should be good to go with zero issues from now on. Thanks mate!

[@stewatparkpark2933]

Carbon comes from the EGR . Combines with oil from the PCV to create gunk .

[@PClem59]

Our merc currently this problem and gone into limp mode. We have ordered this peice of tackle in hope it solves the problem cheaply. Thank you for such a clear explanation of how to do it all. Great job Vince!

[@jezkhan5448]

Hi mate where can u buy this resistor plug from cheers

[@PClem59]

@@jezkhan5448 amazon

[@jezkhan5448]

Cheers for the reply much appreciated does it Matter if their a cheap China copy?

[@PClem59]

@@jezkhan5448 no....not at all, it basically fools the car computer telling it the swirl flaps are in a closed position. You need to get the correct rating resistance for your car though. Forums will help with that. Good luck its sorted ours perfectly

[@jezkhan5448]

@@PClem59 aw mate your star honestly didn’t expect a reply as your comment was from over 10 months ago! And what are those? I thought it was just the resistor plug and go? Am I missing something here lol 😂

[@dannyhtheretrogamingmaster9548]

Nice work Vince I might look you up if my 2.2 diesel Civic needs doing. I used to have that same engine in the old Mercedes C320 cdi that I used to own a few years ago.

[@garywozniak8670]

Thanks for this video, I had exactly the same problem, paid £14.99 for the resistor plug and £14.99 for the new turbo pipe seals.

[@NDW7]

Hi Gary, are you in the UK? Guessing so by £ symbols! Please could you provide a link to where you got these parts? My car is doing this and so is my dad's, both Merc E320 2008 and 2007!! Thanks

[@thomastownsend3488]

Vince, please advise where to purchase resistor plug. Thank you.

[@ranat5526]

ML w163 om612 same issue, removed swirl flaps and put in the resistor, works perfectly!

[@Dave64track]

Great work around they must sell a few of those devices to bother putting a 4k7 in a plug in the first place let's hope it passes the MOT for you like you said let's hope it runs for many years to come for your brother.

[@joesanchez979]

Stay safe and keep it coming 😊

[@adrianshingler6182]

Doing mine today . Cheers for the video

[@joesanchez979]

I enjoyed the video like always 👍

[@challengegym1043]

Super video, incredibly clear. Very helpful

[@retrotech11]

Fantastic work-around Vince! maybe a start into motor vehicle maintenance for some future vids? Or a long term side project like converting an old fossil fuel car into an EV?

[@tristanroberts1645]

Great work 👍

[@philsey6913]

I don't even have a Jeep, but I watched to help support you. I like the way that you take the job through showing every step, showing every bolt head size, etc. You explain everything..."this goes here, that goes there, watch out for this, etc." That is the way these videos SHOULD be done. Too often the content provider glosses over things and assumes that the audience understands what was skipped over. Keep it up!

[@mudplugging]

Perfect video, 10/10, unlike the majority of presenters.

[@Abhishek-C92]

good luck mate

[@ErroneousClique]

You can do the same thing with older Toyota secondary air injection systems that fail - you can install a resistor in the temperature sensor circuit so that the truck always thinks it is over a certain temperature so that it just never runs the secondary air system. Typically people will remove the air pumps and valves as well and block the holes off with a plate, but it is a neat little trick to fool the ECU into never activating the system and therefore never throwing a code. (Secondary air is a total joke anyways as all it does is blow air into the exhaust system when the air temps are cold enough on start to "reduce" emissions by diluting them - lol. That is basically all it does.)

[@krinkov13]

Good practical tutorial

[@moseswathuta4083]

Great info about the impact of a non working part

[@brutlern]

My new favorite expression: the nobbly bits.

[@abzhuofficial]

It's a typical English informal expression lol

[@Kcrumz]

You guys call it a swirl flap!!!?!?? That’s hilarious and accurate, I love it!

[@cidercecil]

What do you call it then? :)

[@Kcrumz]

@@cidercecil well on the Gm cars I’m used to working on they like to call them intake tuning valves..... I’m going to start calling them swirl flaps from here on out!

[@richardhemingway6084]

That is a recognised description. Used in service bulletins.

[@thomastownsend3488]

Where can that emulator/resistor plug be ordered from as I like it. Thanks and keep informing us Vince.

[@andrewauger5891]

Great video Vince! Thank you! I will be trying this on my 2008 Jeep Diesel 3.0 CRD. Do you suggest I order the gaskets as well before I open it up or do you think they won't be needed?

[@jaredl2239]

Good fix!

[@fatbelly2438]

great fix

[@tejasgandhi9146]

Thanks a ton bro I have a w211 e280cdi Will try the mod with resistor Lets see how it works out Thanks in advance

[@Ostaicoechea]

Hello Vince, Just did the swirl flap motor bypass in my OM642 G-Wagen 320CDi and as i expected the limp mode is gone. My engine is a little different because in my car it has a "T" intake and 02 MAF sensors. I feel the engine a little louder and it seems that sound like it "breaths" different. Do you find any long term problems with this mod? I used a 4.7K Ohms resistor and i think its a little bit bigger so its probably 1watt and not 0.5 watts as the ones you showed in your video. Thank you for the great video.

[@ghpark7832]

이곳은 서울입니다. 제차량은 ml350d bluetek 입니다. 림프 모드여서 저항 4.7k 구매하여 영상처럼 설치 하여 해결했던거에 대해 진심으로 감사합니다. 다만한가지 팁은 엔진경고등 을 지우는 오토미션 초기화(다른 유튜브 참고)해주니 경고등이 사라지고 정상으로 돌아 왔어요 할렐루야! 다시한번 본 영상에대해 감사를 드립니다.

[@samman938]

Well done👍😁

[@kptgaming9976]

Worked perfectly... thanks for the vid, saved me £1500 that I was quoted lol

[@BlLLIONAlRE]

Still working without issue? Have you had an MOT over the past 10 months - How did it get on?

[@MrJohnestall]

My swirl flap motor packed up , this has been done for over a year now and seems to go better and slightly quicker off the mark .

[@gb7767]

A handy workaround, but will it get through the emissions test like that?

[@numeprenume7393]

Super. Thank You

[@johntheoldmod]

The oil that caused that problem in the first place comes from the crankcase vent valve and should be treated as a consumable, bad diaphragm or weak spring allows turbo to suck oil vapor or in extreme cases oil, some goes through the turbo and some leaks past the seal onto flap motor.

[@steve323f]

Damn swirl flaps are a major design flaw. They are problematic on BMWs too. Good workaround though. 👍

[@fluffyblue4006]

I kinda missed a description of this swirl flap motor in your video, how it affects engine operation if it's not working, and how the resistor would make the engine computer believe nothing is wrong... So........... The flap closes part of the flow in the intake when idle. This creates some turbulence which creates a better mix between the diesel fuel and the air, which results in a cleaner burn. On higher RPMs, there's more air flow and that will have enough turbulence by itself and the flap can be open, to make sure enough air can be drawn into the engine. If that flap is stuck open, it causes slightly more emissions when idling. The car owner won't mind that. Problem is at the government: cars need to meet emission standards, no matter what. So car manufacturers probably decided to impose 'limp mode' on a swirl flap motor failure. Limp mode usually drives the car owner to fix the problem. Just a dash light: not so much. If the flap is stuck closed, I think, limp mode would be justified: car will not be able to get enough air: incomplete fuel burn, more turbo wear, more soot, more particulate filter regeneration cycles, which may not succeed when there's not enough air. I think, this flap has a spring that keeps it open and it closes when the motor gets actuated. But I'm not sure. The resistor is weird. 4700 Ohms is not accurate for representing a motor coil. That would allow for just 2.5 mA. That's 0.03 Watt of power. That will not move a flap, for sure. But then again... if it's enough for the ECU, it's okay. If the resistor would be more in the range of what the motor would use, it would heat up too much. 4700 Ohms would be okay for a sensing circuit. But a fixed resistance would then indicate that there's nothing moving. So... weird value. I think this is a nice cheap fix that will keep this car usable until the next big thing goes. This car's turbo seems to be a bit of a concern. (edited: fixed some grammatical and spelling)

[@coyote5735]

I think the position of the flap is measured by a potentiometer, nothing to do with the motor it just measures the change in resistance with the change of the position of the flap. It's possible the motor still works.

[@fluffyblue4006]

@@coyote5735 If that would be so, then, replacing the potentiometer with a resistor would make the ECU believe that the flap is always in the same position. That would surely generate an error.

[@coyote5735]

@@fluffyblue4006 Obviously not that's why this fix works. ECU enables the valve to open and looks for an open confirmation, the designers didn't think to make it self testing, not an overly important system. I suspect the valve only makes a minimal difference to emissions.

[@williamtruax8538]

Do you know if there’s an electrical diagram that depicts how this resister functions in the cpu circuit?

[@GadgetUK164]

Nice easy fix to get out of limp mode =D I am wondering what the Swirl Flap does now lol

[@abzhuofficial]

That just sounds way too sexual for No Nut November... "Oooooh, naughty naughty" 😜

[@bonbuy58]

Hi there I've got resistor. but I was just wondering were can I connect my resistor which wire colour

[@DavidGarcia-mm6sh]

Did this today on our Merc. with the resistor - problem seems fixed and no more limp mode.

[@LelanVance]

V8 is the way to go man

[@patrickgr1547]

You just saved yourself $3k at the shop here in the States ✌

[@JeanFrancoisFernandez]

I have a 2007 Jeep larodo Australian model - I would like to know if turning on and off the key 3 times shows the codes on the dash board?. I have the same problem as you and will try your method to correct this issue.

[@gorsmy]

I used a old abs sensor it was giving 5 ohms reading and plug it into the middle to pins it done the job and reset the engine light

[@brentpolk2431]

I had the same issue with a 2018 Jeep Liberty!

[@andyross2601]

Are the swirl flaps stuck closed now? Doesn't that create issues?

[@markbradley1975]

Loving the auto electronics fix. Hopefully you’ll do another for a Mitsubishi Colt CZT. 👍

[@p.a.4094]

Awesome!

[@Nick-bp7jf]

Hi 'Vince'. Great Vid. Maybe make a Transmission fluid and coolant change ones?

[@RWL2012]

Why did you put his name in quotation marks...?

[@Nick-bp7jf]

@@RWL2012 Just a goof on my part that's all.

[@patricioantoniotoledorifo8379]

Hola disculpa dónde se compra la resistencia tendrás el link del producto

[@DjVojto]

What are pros and cons of stopping the variable valves from working?

[@dord1954]

Hi Vince it looks like I’m going to have to do this to my old Mercedes can you tell me did your brother have any issues afterwards? Thanks George

[@mehmetdogu384]

Dear Mr Vince I have had this for two years but i could not get rid of engine amber light. Is there anything you could suggest? Thanks in advance.

[@kavindugilshan]

When you do this modification still can you pass the emissions inspection?? (TÜV in germany ) ??

[@JuicyJakeRepairs]

Car goes vrooooomm

[@davekimball3610]

Always remember to line up your knobbly bits!

[@pachecobrandon29]

What is the name of that part to bypass and where do I get it

[@joesanchez979]

Plus it's saves you money

[@lesrogers7310]

Looks like a service is also needed.

[@fixingproblems3183]

Can you tell what type bypass emulator you used ? The link you shared is removed. The dealer did a oil cooler seal job and they messed up my car.

[@ktaragorn]

I thought my headphones were broken when i couldnt hear the intro..

[@michaelheinrich44]

same here

[@BenCos2018]

same here also I legit went and checked everything xD

[@leifchristensen1]

Hi A great video you made there 👍 I am having the same fault now ( grand cherokee 3,0 CRD , 2006) My question is, what difference does the installing of the resister do ? I mean is it healthy for the engine ? Regards Leif, Denmark

[@stewatparkpark2933]

The swirl valves stop working and stay open . Doesn't have any negative impact on the engine .

[@rayjames9835]

Well done mate! Very clearly explained! 🦘🦘🦘

[@nickvas4448]

Can you show how to replace the throttle body location please or show me where it's located please? Thanks

[@tefimk6144]

Hello , do I need to move with hands those flaps to open positionn , or just to put the resistor , plug and play ?

[@Nenib]

I have the same car same problem pls what is that resistor called need more info about it and where to get it from

[@nikittak5549]

COULD ANYONE TELL ME WHERE THE MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP) IS ON THESE CARS. I HAVE A 3.0l 2005 TURBO DIESEL JGC. PICTURES PLEASE. THANK YOU.

[@shkelzenkrasniqi8537]

Hi there i want one of these but i live in Houston Texas, how can i get one shipped to USA ? Any help would be appreciated, thanks

[@gower1973]

Well I guess the turbo is going to be the next thing that lets go, if its leaking all that oil.

[@jasperlongman7668]

No, the oil comes from the „Kurbelwellenentlüftung“ crankcase breathing.

[@coskuarsiray]

@@jasperlongman7668 and the torn oring inside intercooler hose. mine was so.

[@rukaiyadocrat9570]

I did not come right with that method maybe it is because of my resistor Which is 4.67k Do you have any tips

[@BadeaIonel-xz3lx]

I have a chrysler 300c with the same engine can you please send me the link where you bought the resistor .. I want yo purchase my self to because I have the same problem

[@AdrianSimonJacquemai]

Hello, i have exactly the same car and problem. First I tought tht the problem was the throttle. What is exactly the brand and model of the emulator you plugged in? And how can the car still run without the Flap motor? Thanks

[@ktserver4164]

Danke!

[@Mymatevince]

Thank you 👍👍

[@raymondwright5461]

How can I get that adapter? Any links?

[@JasonSmith-tv2zw]

I had my swirl flaps removed years ago, already had 3 children

[@modestasandrijaitis5412]

Does it still drive okay with this bypass?

[@yurdan100]

Work for every om642

[@philm6517]

Still have the issue with mine limp mode all the time after few miles

[@ShaShaheen]

Hallo, I have the same problem with Mercedes Viano 3.0 CDI 2009 model, engine OM 642.990 please can you tell me where can I order the same plug. Thank you for the help.

[@piotrm9157]

Full Pro 👍

[@donowens9635]

Is there a name for that part on a 3.7 v6

[@bekodimi7798]

Hello, where can you buy this plug? Thanks in advance.

[@harryharnoth193]

Your link for the emulator does not work. Could you please let me know where to get one in Canada?

[@trevorbyron9448]

Why didn't you attach the resister as you advised..

[@robbie3304]

I tried the link in the description to eBay uk but not showing the emulator 🤷‍♂️help,