VAG Overboost Fault - P0234 - Turbo Repair Step By Step Guide
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- čas přidán 1. 02. 2018
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2) Link For Turbo Cleaner rover.ebay.com/rover/1/5282-5...
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In this video I work on an Audi A6 TDI which was having very poor performance showing multiple fault codes, I source the Overboost fault causing p0234 to be logged on the ECU.
I show where the main problem was and what I done to rectify it.
Tool options that I recommend and use. www.amazon.co.uk/shop/gerardb...
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Thanks for watching :)
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Disclaimer:
GerardBurke is a qualified motor technician who has completed modules & courses in manual handling and all aspects of workshop safety. These videos are not intended to be used by anyone who is not trained and or qualified to carry them out.
Due to factors beyond the control of GerardBurke, I cannot guarantee against improper use or unauthorized modifications of this information. GerardBurke assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. GerardBurke recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of GerardBurke, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not GerardBurke. - Auta a dopravní prostředky
Good video, one of the better videos on CZcams showing the whole job start to finish, something I need to get round to doing on my tdi
What a gentlemen. Taking the time to do this and record it for all to see and learn. Thank you 👌👍
Thank you
Very nice brother i had this problem in my car i have watch your video and i have fix my car brilliant work bro happy with your work i am copy cat watching your video to fix my owen car thankyou mate mechanic they were asking me to much money but you are the man save my money double thanks mate i am not mechanic but i can do a work watching a work than i can do that work brilliant copy cat i am lol .make some more nice video sir and boss uk england
Very good video. I have an issue with my wife's car over boosting and this has helped me understand no end. Big thumbs up.
Thanks Adrian for the kind words
Fabulous in depth explanation of the causes, troubleshooting and components of the TDI over-boost problem. Demystifies it all.
An excellent video, well explained and logical. Thank you very much for taking all the trouble.
I would like to thank you for this video< made in a professional way< explained for simple and full detailed. I learned some new thinks thanks to you. I think my turbo needs a nice clean up, my rev is not going more then 2000rpm with pedal down< hope this clean-up will do the job. Thanks again.
Very good video, well explained. Though I'm going down the Mr Muscle way. I understand the turbo much more now. Thank you.
I used this video to check my turbo on my A6. Very good video and easy to follow. Unfortunately my turbo was completely broken. Many thanks for the video
Brilliant work Gerard, from a fellow Irish stuck in Tenerife with a T5 AXD overboost problem looking to get home for xmas, this has been the most informative video I've seen. thank you Mo Chara
Cheers Niall
wow. not only the procedure but also the attitude of the mechanic is just marvellous.
Thank you
Mechanic? lol. The idiot didnt even know what the actuator is for!
Its a VNT Turbo, It doesnt have a Wastegate... the actuator is a variable Vein Actuator... :P
@@MightyGimp comment was 2 years ago dude... Bit behind on the times
@@RGD-Repairs are you mad? He clearly knows the difference in vnt and wastegate, simple word play, it's still an actuator. Most so called mechanics wouldn't even bother with this and would just tell the customer they need a new £700 turbo before labour.
Thank you for uploading,not too hard a job where special tools are required,as you say just be patient organised and tidy,take a few pictures on strip down to aid reassembly
Thank you for taking the time to show us how to clean this Turbo
Brilliant video i wish every single mechanic did his job the same way you do it
Ohhh thanks man!
I've just bought a copy of my A4 B7 engine, to learn from. This turbo is exactly the same as the A4 B7. Lovely work! Thanks.
I know the video is old now, but I appreciate it today. Well done.
Has to be the most detailed oriented video on turbos I've seen...#SaluteSir
Thanks Victor
Thanks for posting you were very thorough and in detail, very helpfull video this put light at heart of the matter..thank you once again...
Hi, I am impressed. You have made this video as much as short without missing any details right from problem description, possible causes, dismantling details with adeqaute video angle, clarity and audio details. awesome.. good..
🙏🙏❤️
Excellent detailed video and thorough explanation, top man Gerard!
This is when a soda blaster becomes your best friend...
Excellent job Gerard
Got one of these turbos on my car, very informative video. Thanks for making it.
Great tuition, thank you much for your time! I understand the turbo much better now.
P0234 gl 320 cdi merccedesk
thanks a lot dear..
Such a clear, enriching and helpful explanation
You answered some questions that were always on the agenda..
Great video. Clear step by step. Increases my chances of doing the job from 0% to about 50%- we shall see.
Thanks Andrew 👌
i have the same problem on my audi b7 tdi 16v 2008 uk model. thanks for sharing, this will help me save some money
Thank you very much for this video and commentary. It's exactly the problem I'm having at the moment. So thanks again 😉👍
i wished i watched all of your video when putting a new core in ive never done one before and ive been compleatly confused why my car still isnt boosting. and i now see where ive went wrong its to do with the turbo fins didnt move so thank you so much im 100% certain that is my issue hopefully i havent screwed my turbo.
great presentation Gerard! God Bless !
Thanks very much Jimmy
i always go for a long drive almost everyday but today my vw passat turbo charge went to a limp mode,,,, glow plug warning light flashing and loss power at the same time,,,this gives me an idea where to start looking for faults,,thanks great upload
Great Vid got this exact problem. Got a good idea how all this works now.
Gold in the form of great content..great quality work and thank you!
Thank you so much for this video well explained too . Car and money saver you definitely are. Massively appreciated 👍👍👍👍👍👍
Awesome description in educating the issue. Well done. A+++
Very good. I learned a lot there. Thank you. I have a similar investigation with my Corsa 1.3 TDi
Excellent video, a good walk threw on how to do the job from start to finish, I've got a diesel meriva to do and this video has clarified a few things for me,I was going to go for the spray option but now I will just take it of and do it the proper way,then its done right first time,keep up the good work
Thanks Lawrence, good luck.
@@GerardBurkeBurkesGarage I took the turbo off and cracked it open, it was packed solid with carbon, and seized a little, got it all freed up and spotless, rebuilt it and gave it a run,its still loosing all boost after a couple of seconds, so the plan is to replace the actuator and vacuum selinoied, found two brand new ones for thirty pound,so it makes sense to do it while I've got all the bits off and good access, fourteen year old bits,so I will keep you posted and let you know if all is well next test drive lol
All the best.
the best video that show one of overboost causes
thanks a lot
Fantastic video. That it the problem i have on my Touran. So i will be ripping my turbo off and clean/replace what i need. What a class gentleman
How did you find removal of the turbo? It's on the back of the engine so did you remove from below? Did you also remove/loosen exhaust? Cheers.
Dziękuję za film , bardzo dobry materiał szkoleniowy.
Pozdrawiam z Polski.
Thank you for the video.my turbo over boosted and blew an pipe.new turbo home now.
Thanks to the gentleman ,same problem with my golf 5 TDI
Great video, my Audi A4 2.0tdi suffers form over boost and restricts to 3,000 rpm, so will definitely be giving this a go.
same with my ford focus :(, i will try tomorrow
@@danield3791 Hi Daniel, I haven’t cleared the fault but it’s so much better after changing out the fuel filter
Awesome vid , thanks for taking the time to make it
Great video! I'm about to do this on my 2.0 DTI. Any tips on blanking the egr ?
I had a P0234 on my Mazda CX5 2.2, turned out a hose had popped off a very difficult to access turbo actuator at the rear. Aside from throwing the error code under heavy and prolonged acceleration, two symptoms were oil in the intercooler (likely from the first turbo working so hard and never swapping to second turbo), and the wastegate readings via OBD2 were unusual. Easy fix once found.
very good video on how to guide. not many of you chaps about anymore. big thumbs up for you sir
Thank you.
Thanks a lot for the very detailed video !
Thank you for a great and informative video
Thx very much Gerard. Please, the return line for Oil down the turbo needs any special glue when you reconnect it? Or you just reput it like that? Thx again for your answer.
Cool video. Im having some probs and suspect the turbo.
Im going to tackle this when the weather gets better. Cheers
Dougie McBride how did it go ?
Very informative, thank you
Excellent guide👍👍. Thanks
I had the same fault on my 2009 Suzuki GV with limp mode, etc. After paying a garage to clean the turbo I now try to keep the variable vanes moving by using Millers Diesel additive, by occasionally pumping in oven cleaner and more especially have blocked the tube that brings the carbon back from the engine. Result ? Many years of trouble free turbo.
Very good job my friend and thanks for teaching me good
Thank You very much sir.
This is an excellent video, but at 1:56 and 3:14 that's not the wastegate. That's the vacuum-operated actuator, which is connected to the actuator rod. The actuator rod operates a variable vane on the turbo. This turbo does not have a wastegate....
yeah this dude had me thinking I myself was the idiot, thanks for reigniting my faith in myself lol
People tend to call it a wastegate, force of habit
Good video. Well explained how it works 👍
Thank you
Does both sides have ring seals? are these universal, fits every turbo? or i have to purchase a turbo kit repair?
Very nice vidio thank you for that 😀👍
Very informative thanks. I'm guessing the pressure that enters the wastegate and moves the diaphragm and rod, comes from the pressure in the inlet manifold?
Great jot and clear Explanation
Great video well explained!
Good video, cheers for the info
Great job , great video
Great job bud ✊🏻
Top job thank you for sharing
Hi, thanks for the great video. How did you establish it was the turbo, not the pressure sensor or actuator?
Great video, thanks! At a garage, would this process be cheaper than a replacement turbo? I’ve been quoted £1000 for a new turbo fitted on my T5.
Hi, can you let us know what was the issue with the air flow that you mention at the beginning related to bad idle?
Wonderful job. Hope you can continue it.
Btw can you share the specs torque of the torx and the other external bolts? Ty
Very good video. I just fixed my turbo. Thank you very much.
Excellent video
Nice video, I did all that to the turbo on my TD6 Range Rover which is basically a BMW M57 and the vanes were seized solid and i was getting P0046 which I believe is caused by overboost. I put it back on and still get the same overboost condition up hill under heavy acceleration, I changed the MAP sensor as the old one showed no resistance compared to the new one and then i started getting a P2038 map sensor fault which says it is shorted to 12 Volts but i think it is actually reading too high pressure as it doesn't give a fault if i disconnect the vacuum pipe to the actuator putting the turbo into minimum boost and it doesn't give the over boost fault either with the vacuum pipe removed . i have already replaced the actuator solenoid and tested everything with a hand vacuum gauge and so I am only left with the length of the actuator arm as far as i can tell. The vacuum, drops to 5 inHg under heavy load and when I looked at the actuator with a vacuum of 5 inHg applied it had already moved a fair distance so my next move is to lengthen the actuator arm unless you have any other ideas? Any help would be much appreciated
excellent video cheers
will turbo strip be very different on Mk 6 petrol Golf 1.4L?
Sweet little strip, clean, rebuild and test drive, Gerard. This maybe something I do on my daughters TD4 Freelander sometime. Are there service kits available for the turbo (new seals etc) or is it a case of just re using what you have etc? TIA
I Gerard, I'm just in the middle of doing this and I need to know should the shaft be engaged with fins when you move actuator or is this free
thanx man i just saved 150€ for used turbin and fixed mine passat 6
👌
Great video, tiny point on terms - this turbo has no wastegate, the item you are pointing at is the VNT vacuum actuator
What tools are needed to get the turbo out?? I have a vw t5 1.9 tdi brr. I replaced maf sensor , n75 sensor and map sensor in hope it was one of them.
oh Bugger... I need to do this on my Jeep Patriot. might get a quote from a Garage first to see if it's worth a weekend of my time or a professionals time.
Great video Gerald !
Liked/Subscribed !
Thank you
Hi, with P0299 fault what need to do what to change in turbo? Thank's 👍
Thanks for this video mate, I have a quick question on this. I have a 2015 Audi A6 that's just had a DPF clean the car has been put back together however with the newer Audi's removing the Turbo & DPF is a good 7 hour job due to the location. My car has now thrown a P0234 code however the problem points towards the electronic actuator that are apparently known to fail in these cars it looks like my actuator arm is moving freely under load causing an over boost and kicking the car into limp mode, my question is does the DPF/Turbo need to come out again in order to remove the actuator or can these components remain on to replace this device? Cheers
I would like to ask you that after the cold start of the Vw Passat b5 1.9 TDi AFN, when the engine is idling, the turbo starts to beep. When I add more gas to the engine, the beep will stop. What can cause the problem?
Unreal video fair play pal!
Thanks a lot 😀
Couple of questions for anyone here:
- has anyone used an electrolysis bath to clean parts like these? I’ve had great success using electrolysis with cast iron cookware and bike parts. Seems like it would be great for engine parts...?
- do you apply any kind of lubricant to the internal parts after cleaning and before reassembling?
Really fantastic video!
Do you mean 'Ultrasonic' bath?
No, you can't use lubricant as the temps would just burn it off!
Actually a light coat of dry fluffy carbon is a good lubricant.
Great video my man!
Good job! One question mate : if I buy the cartridge to replace it on my turbo doest it need any calibration or its just a quick swap?
Thanks my issue started when i bought new turbo for cx7 mazda overboost error and the car knocked when i push gas too much. Any solution before losing motor? How to change or lowering the boost. Thanks
Great video
Thanks Ahmed
Also a damaged diaphragm on the actuator caused by negative pressure in the actuator perforating the diaphragm I know because it's happened to me and no mechanic could find the fault but I found it
Well done man. You are nice
Thank you so much 😀🙌🙏
Is the magnetized Philips screwdriver your best tool ? Otherwise it is a useful video.
Best video.
The way how he is doing and expalaining is good.
Thanks broo.
I will do tomorrow in my car.
Regards for mechanic.
Thank Q Gerard for excellent video... What camera did you use? Good clear videos of yours..
nice video big thumb up!
Cracking video 👌🏼
Thanks very much, I try to put as much info and detail as I can in videos. I hope their are others you can enjoy too :)
When you put the rollers back in did you lubricate the veins & parts before sealing it?
12:30 Can you buy a new vane section and replace with a new one, rather than cleaning?
Please tell when strip it back the same way need to calibration or something like that?