Amaizing video with complete information from start to finish. That is the way it should be done. My hats off to you sir. You will have my undenying attention from now on. Cheers. From year of the vehicle, symptom of the problem. Step by step inspection of the system Andy why you are doing it and finally the cause of the problem. The fix and finally the graph test confirming everything is running great. Just simply amaizing.

@CoolAirVw

2 жыл бұрын

wow! Thanks for the complement!

@MetaloMan007

9 ай бұрын

Hats off sir. Thank you so much for your efforts.

@CoolAirVw

2 ай бұрын

@@MetaloMan007 your welcome

literally the only true video that explains vacuum pressure, vnt boost control, and n75 with any significance on youtube. thank you!

@CoolAirVw

8 ай бұрын

awe shucks! Thanks

Excellent diagnosis skills, some people think all main dealership garage mechanics are massively competent and thorough like this guy, if only.

@CoolAirVw

4 ай бұрын

thanks

They did this because the PCV valve that you pointed to failed, and they went internet spelunking for an answer. Someone on some club told them to drill a hole to give them a handle to pry that cover off and removed all the baffling. After the surgery they put a "dab" of rtv that seals it... for a few .. It's a "mod" that was removed from the forums back in 2018 ish. SO MANY people drilled holes in this and then RTV'ed over the hole when the PCV was stuck closed sucking oil into the intake and through the PCV system. It later gets sucked in or blown off then this condition presents itself.

U have got patience n knowledge hard to find a good tech like u well done

@CoolAirVw

9 ай бұрын

thanks

Thank you! you just saved me several hours of research. I did short cut some of your checks. I did find the muscle line to the N75 split. A quick section of hose to replace the moulded 1. All Ops normal! Test drive improvement Proved a good fix. I'll pretty it up later, back up and running for the rest of the work week!! THANK YOU!!

@CoolAirVw

Жыл бұрын

Well then, NICE DIAG to you!

I have now subscribed to your channel after watching this video. It is very satisfying to see a mechanic who knows what they are doing. I'll bet you are never short of work. Thank you.

@CoolAirVw

2 жыл бұрын

thanks!

One of the best diagnosis videos I’ve seen in a long time. Thanks again for the excellent video and explanation.

@CoolAirVw

4 жыл бұрын

Thanks for watching.

Thanks, very nice video explaining vacuum fault finding at its best! Basic tools, effect fix!

@CoolAirVw

4 жыл бұрын

I appreciate the compliment. Your welcome.

A great & concise visual display of fault finding...thank you.

@CoolAirVw

6 жыл бұрын

Thanks.

Absolutely wonderful video. Well done mate.

Best vid so far to approach this issue...great job, superb!!

@CoolAirVw

4 жыл бұрын

thanks for the complement

This has been a great video. I have a turbo issue on my 06 and this will be my reference video for diagnosing it. Thanks so much!

@CoolAirVw

3 жыл бұрын

Glad it helped

I've used this info to perform the test. Thanks for posting.

@CoolAirVw

5 ай бұрын

your welcome

I have a 04 Jetta TDI and never knew how vacuum circuit worked. You clearly explained each component for a idiot like me to understand, thank you very much Sir!!

@CoolAirVw

6 жыл бұрын

thanks

Super super super it's very useful for me. Thank you so much

@CoolAirVw

2 жыл бұрын

your welcome

Brilliant and thank you, your info was so comprehensive. Wonderful Kind regards Jay

@CoolAirVw

2 жыл бұрын

Glad it was helpful!

Thank you very much for posting this. It helped me a lot understanding how the vacuum system works. I will perform a similar test on mine as yesterday suddenly the power dropped and the car was not pulling more than 2100 rpm. I could not hear the turbo either..

Best video I’ve seen that explains test for vacuum 👌

@CoolAirVw

3 жыл бұрын

thanks

Great job really i don't say it often.. The little details you pay attention to are really important for people.

@CoolAirVw

6 жыл бұрын

Thank you so much.

@Naughty_Squad

4 жыл бұрын

@@CoolAirVw Here i am back again needed to refresh my memory. I love the fact that you showed the good vacuum for the n75 just what i was after.

Excellent Diagnose Boss... Will keep this in my notes for my very own vw repair manual...Lol

@CoolAirVw

4 жыл бұрын

Just dont drill holes in the VC and you'll be set.

I wish I could find a shop like yours here in Fla. I've been at the jaws of a dealership for the things I don't know about. The turbo tear down was great and you can bet they would want to sell a turbo. I could go on and on. I'm glad to have found you and if you know anybody in or about Parrish, Fla. that works on VW's even Tampa let me know. The scanner info is great I'm looking into Hack your car so I don't have to but a scanner but have the program on my computer. I'm doing my best to learn how to keep my 06 Jetta TDI.

You are great!!! With your video I discovered why I had this error. All mechanics I visited Sayed the wastegate needs to be changed. But in the end it was just a hose loose! Solved with you and a obd 2 scanner ! Keep up the good work! Forgot to mention 2011 VW polo

@CoolAirVw

5 жыл бұрын

thanks for the kind words

@adrianadrian9479

5 жыл бұрын

poti sa imi scri in romana cum ai rezolvat problema?

@CoolAirVw

4 жыл бұрын

@@adrianadrian9479 Nu, nu pot. Dar dacă vizionați videoclipul puteți vedea ce parte am înlocuit.

Great video, best explained one I've seen in a long time.

@CoolAirVw

5 жыл бұрын

Thanks!

WOW ... now this is the video if been trawling trough KZread for ever! A rare find indeed - all the evidence and the solution backed up with graphs - a demo that's punching way above it's own weight!! Thank you so much for sharing your deep knowledge on this subject. I'm sure I'll find the solution to why my Peugeot 308 's thrown up a P0299 Code.

@CoolAirVw

Жыл бұрын

I have other video's on P0299. Thanks for the compliments

Brilliant video guys 👍🏻

@CoolAirVw

4 жыл бұрын

Thank you.

Excellent video, helped me a lot!

@CoolAirVw

4 жыл бұрын

cool! Thanks for watching. Be sure to watch our other boost videos.

Thank you for the great video!

@CoolAirVw

4 жыл бұрын

thanks

Thanks for the video. Very informative.

@CoolAirVw

Жыл бұрын

your welcome

Great, succinct, informative - thank you.

@CoolAirVw

4 жыл бұрын

Thanks. More boost related video's coming.

Great video. Thanks for making it. My guess is some crooked mechanic, in the car's past, drilled that hole.

@CoolAirVw

4 жыл бұрын

maybe but remember the cap was broken off and glued back on for some reason.

recently had very simillar problem. traced the vacuum lines and saw one had fallen off its clip and worn a hole by contacted the axle. $7 fix. Excellent video. I'd like to see the opposites of some of your findings in this video. Like what if the vacuum had been bad at the pump, or solenoid, or if the plunger hadn't gone all the way down. Great vid!

@CoolAirVw

5 жыл бұрын

thanks for watching. More videos coming. Maybe one will come in with a problem like what your describing.

OOOOOhhhh... 🙃Well, that explains everything. I accidentally damaged my Valve cover and attempted to reseal it with epoxy and high temp silicone, quite clearly that has failed, little had I known the damaged section was a reservoir for one of the vacuum lines 🙈. I did trace the pneumatic lines and ssimilarto what you showed in this video, the line is fed to a solenoid which feeds two other vacuum lines but iIwas naive and only presumed it wouldn't affect my boost levels Dah🙄. I had been getting the following codes P0299 and P2564 but found no fault on my actuator, therefore, the damaged cover must be the culprit, luckily I have already ordered a new cover and stumbled across this awesome video in the process of fault finding various causes and fixes for this issue. Here is to more Boost 🍻 Many Thanks CoolAirVW Rm 😁👍🏾

@CoolAirVw

6 жыл бұрын

Best comment ever! Thanks! Its nice to be appreciated.

@pauliekruger7639

5 жыл бұрын

Junk Yard, recycle.

Great trouble shooting video my guy. Just went through a similar situation, the main feed line from the vacuum pump was clogged with carbon build up resulting in weak vacuum supply to my turbo boost solenoid. Also my valve cover vacuum line needed to be plugged to maintain vacuum which makes me think there is a second failure along with the carbon build up. Suspect the vacuum reservoir in the valve cover has some internal failure. Plugged the hose and test drove and def have boost again, will order a valve cover ~$475 and see if that is the last piece of the puzzle! Good work!

@CoolAirVw

Жыл бұрын

get a used one or use a vacuum reservoir from a older one that is external of the VC.

Great video! You got it right on!

@CoolAirVw

4 жыл бұрын

thanks for watching.

Great video, good troubleshooting ...

@CoolAirVw

3 жыл бұрын

thanks. Have lots of boost replaced video's on the channel.

Thank you very much for your video excellent

@CoolAirVw

3 жыл бұрын

Your welcome!

Excellent video ive got s vacuum hand pump on the way, bit this video has shown me what to do, my engine is a bkd, and has a vac box instead of the n75 and egr one

@CoolAirVw

3 жыл бұрын

thanks for watching and I appreciate toe t positive comments.

Brilliant - well explained.

@CoolAirVw

4 жыл бұрын

thanks

Great video!! Thank you!

@CoolAirVw

2 ай бұрын

Youre welcome.

Great video! I went through a similar process of trying to find the cause of my power loss, which turned out to be pinched vacuum hose. I now have a new issue unfortunately, which is that the power delivery is like my old 2 stroke Yamaha 350! At about 2500 rpm the power kicks in very abruptly. I've ordered a new N75 valve as I've checked that the variable vane actuator moves smoothly when applying vacuum with my vacuum pump, so it doesn't seem as though it's the mechanism jammed. Steps so far: Cleaned MAF using MAF cleaner Stripped and cleaned EGR valve (no significant carbon buildup but at least now it's clean) 2008 103kW / 140HP 2.0 TDI Tiguan

@CoolAirVw

Жыл бұрын

If you have an 06 like this one there is a smoke and hesitation problem that can be solved.

Excellent video I’m doing turbo on my Ford Focus at moment but I wish ide seen these videos before may not be my turbo

@CoolAirVw

4 жыл бұрын

Obviously some of the SAME DIAGNOSIS STRATEY MIGHT APPLY TO OTHER TURBO CARS .

Enjoy your videos a lot. Thank you. I would think a bit costly to purchase a new valve cover when the hole could be easily sealed shut with a simple patch etc. Minor detail tho.. Love the diagnostics!

@CoolAirVw

3 жыл бұрын

Lots of people have commented that allready but I would guess few of them watched to the end where the cap of the valve cover was shown that it was broken off and glued back on.

@rowdyrickshallr9305

3 жыл бұрын

@@CoolAirVw Thanks for the reply. i watched thru. Makes sense now. I had figured it was just customer's wish. Keep the vids coming. I learned a good deal here to use on my Tdi. Your videos are easy to watch. Talking things thru as you work is awesome. Thank you. 👍

fantastic video

@CoolAirVw

3 ай бұрын

thanks

good video you explain it well.

@CoolAirVw

4 жыл бұрын

thanks for watching

So I had a similar problem, but no one had drilled a hole. What happened is that the glue joint VW had between the part you showed and the plastic cylinder head cover casting had developed a leak. I simply applied a silicone seal around the entire joint, which eliminated the vacuum leak and solved my problem. You could have saved quite a bit of money by simply similarly plugging the hole with silicone rubber.

@CoolAirVw

6 жыл бұрын

Very good to know. Of course plugging the hole was an option, but with the part being broken off and the fact that it was for a customer I had to guarantee it was a good fix. Plugging the hole has been mentioned before in the comments.

Dam good video.... Good explanation

@CoolAirVw

5 жыл бұрын

Thanks.

Many thanks for the video sir. I used your video as a reference and checked the source vacuum on my 2014 Jetta TDI and its only generating 12hg of vacuum! Looks like I might be having a bad vacuum pump. My brake pedal go hard when I press brakes repeatedly in a short period of time. Car also feels sluggish .

good job finding that took some tracing.

@CoolAirVw

3 жыл бұрын

thanks for watching.

Brilliant video. Lots of really good info on this issue. I've got the exact car with the same issue. Planning on digging into it tomorrow.

@CoolAirVw

6 жыл бұрын

Thank you. Very common for the turbo actuator diaphram to be ruptured. Look for vacuum leaks also.

@rsage_

6 жыл бұрын

Question: I've got a 2006 Jetta TDI (BRM) with an automatic transmission. I'm getting a low boost code (P0299) and can't find any vacuum leaks. When I connect the vacuum line to the N75 (pressure converter), it seems as though it sends full vacuum to the turbo actuator (the actuator holds vacuum just fine and is set to open at around 3-5 PSI vacuum and fully opened at 18-20 PSI), thus forcing it to open completely and run horribly. Do you know if the actuator is supposed to send full vacuum to the actuator at idle?Hope that all makes sense.

@CoolAirVw

6 жыл бұрын

I think your question is answered at 13:43 in the video.

@rsage_

6 жыл бұрын

Thanks, so I guess I'm getting the exact same vacuum from there, but for some reason when I connect it (as seen at 13:45) to the actuator the car starts running horribly. I can see the pin in the actuator drop all the way down. It has a new turbo on it and I know the veins are moving just fine.

@CoolAirVw

6 жыл бұрын

Thats strange. Can you define what you mean by "runs horribly"? Are you still driving it? What brand or supplier is the new turbo from? Does it trigger trouble codes? Have you inspected for camshaft wear? Camshaft wear problem would be very evident if the intake tube was removed from the intake (at ASV/ EGR ) valve and you ran the engine. It would sound like popping from intake usually.

I’m going to have to look at my vacuum lines. I’ve two Jettas that are identical with one being a manual and the other is a dsg. The manual feels like if you barely take the throttle it’s very responsive, where as the dsg Jetta definitely has lag to it. It’s gets great fuel economy, but every so often goes into limp mode which is a pain especially if you’re on the highway. Thanks again.

@CoolAirVw

2 жыл бұрын

thanks for watching.

+1. .. Excellent vacuum tutorial specific to the 1.9l BRM TDI. .. Our 2006 Jetta 1.9 BRM has a similar if not the same driving condition as your 1.9l TDI Jetta; soft power and occasional limp mode. .. I have diagnostic's to get with. .. Have VCDS, will travel. .. Thanks!

@CoolAirVw

4 жыл бұрын

got another BRM P0299 code video coming up.

Very sequential and systematic test. I have the same issues with the tdi passat. I have ordered the handheld vaccuum pump and will test and update. Will be hard to find the actual line but will update what happens. Thanks again

@AjmalKhan-rq5xu

Жыл бұрын

Mechanic said the whole turbo needs to change which is £1600. But will test it in the sequence you did to find the exact problem. Hopefully it is something minor

@CoolAirVw

Жыл бұрын

@@AjmalKhan-rq5xu what year passat do you have?

nice catch,and also you got it easy; suppose the engine ECU had gone astray and was commanding the N75 wrong, now that would have been a job; have a 2004 Laguna 1.9 DCI here with the opposite problem (takes off slow,then goes to over 2.5 bar of boost, scary fast,and i'm running out of options!! everything is ok, no check eng.light,no error codes... but the ECUs on these sit under the battery,very low, and they are prone to heavy corrosion on the terminals...

Nice video!

@CoolAirVw

4 жыл бұрын

thanks.

perfec 👏 sen bir harikasın usta

@CoolAirVw

4 жыл бұрын

thanks for watching

That’s a great video…..you know yr stuff…. Shame most garages don’t…. Wished you was by me😳

@CoolAirVw

2 жыл бұрын

thanks

That's a real good research into that vacuum side of things ...dont know if u can remember but I asked about hydrolocking on a 2002 jetta well it turned to be good after I changed out the charge air cooler with a new one car drives good ...but I have a similar problem as u just described loss of power but it will come and go as you drive the car would it be possible for the vacuum side to cause that type of symptom...thk you for your videos they are very helpful keep up the good work.

@CoolAirVw

5 жыл бұрын

Yes it is possible.

Good job sharing

@CoolAirVw

Жыл бұрын

thanks for watching.

Good works!

@CoolAirVw

5 жыл бұрын

Thanks

VERY HELPFUL. THANS .

@CoolAirVw

3 жыл бұрын

thanks!

2014 VW 2.0 tdi. It had an underboost issue p0299 edof last year, It had a new turbo fitted this January. Shaft / bearings had worn, Veins has seized up and It has been fine up until 2 weeks ago. once again got the p0299 underboost. I’ve Checked all vac pipes Vac pump Checked the n75 Checked the actuator travel and diaphragm Checked all boost pipes, clamps ect Fitted a new EGR and the checked the exhaust had carbon built up.... Any ideas? Thanks

Is 25+ pounds the correct specification for vacuum pressure? I am having a low power problem and I am getting 18 pounds of vacuum at an idol directly off the pump. Obviously I’m leaning towards a bad vacuum pump

Muy bien. Gracias

@CoolAirVw

4 жыл бұрын

denada!

hi have a 2006 vw jetta tdi 1.9 same problem with the turbo if im desconnect the EGR Vac and Evap Press Regulator Solenoid Valve Pierburg valve connected to the turbocharge wastegate and the car works fine but , if im connect the valve from the egr to the turbocharge waste-gate the car stop no leaks and any of the valves. the egr cooler turbo replace 2 years ago any help thanks

good video

@CoolAirVw

3 жыл бұрын

thanks for watching!

Hello friend, i have a gli 2006 turbo, it has a problem very very similar as this one, bur my motor is gasolined, and i was wonder, the n75 would function the same way as this TDI? The wastegate of my car opens with pressure, not vacuum like you show us on video, i apreciatte any coment or help. Thanks!!

Mine car goes into safe mode on a highway after 40min. City drive does not habe anny issues you can drive as fast as you will turbo is working perfectly. On a highway slightl hill it goes into limp mode. On off und he is doing great again for sometime you cant predoct when will he get in limp mode. Po299 underboost code. All leaks habe been checked intercooler changed. Could it be n75? Turbo should not be a problem, can you help please??

תודה רבה על הסירטון תקלה לא פשוטה

@CoolAirVw

3 жыл бұрын

בבקשה

Thank you

@CoolAirVw

5 ай бұрын

your welcome

at 14:43, you cycle the on/off of the n75 valve - are you doing that manually or by operating VCDS? does the computer normally elevate to 25mmhg of vacuum then 0? Mine sits at 25psi and does not fluctuate.

@CoolAirVw

8 ай бұрын

scan tool puts engine computer in a test mode that cylcles it. If yours isn't fluctuating then either the test isn't happening or the solenoid is stuck open or the computer is incapable of closing the valve.

Any specs on the alh for output tests on the vacuum I’m getting ready to replace all my vacuum lines because they are worn pretty good and plan on doing these tests on mine for good measure

@CoolAirVw

4 жыл бұрын

See my other video kzread.info/dash/bejne/YmZ_rNqHnrzPis4.html

Great video, my 2006 VW Jetta TDI has similar problem, goes into limp mode. I am not willing to pay VW what they want to fix my car's problem. I can at least tackle this problem with some education on what to look for.

@CoolAirVw

4 жыл бұрын

thanks.

@bumfluff4133

3 жыл бұрын

I’ve got the newer 105 engine and there’s no tutorials on it for p0299 all boost pipes on turbo trying to boost but just vibrating

Would a evap smoke machine have worked to find this fault as well ?

i have been looking at my hoses and testing the vacuum, everything is super similar, i only have around 5 in. Hg at the solenoid, but my vacuum is 28in. Hg. I just have no idea where the leak is

Awesome video for both VW PD TDi and fault finding in general! I’m having similar issues with a BMN Engine. Any idea what vacuum the storage tank in the rocker cover should hold?

@CoolAirVw

4 жыл бұрын

It holds vacuum. Full amount. As much as you can pump it up with a hand pump it should seal.

@richardroope1424

4 жыл бұрын

CoolAirVw Rm thanks buddy! The system is doing about 28in mercury from the PD pump. The storage tank though is taking 20+ pumps to get up to this, and only hits about 20?. When this turbo under boost fault comes on, I heard a “pop” sound like something had unstuck (10th time in 2 days I’ve generated it on test so I know it’s not loose pipes etc)

@CoolAirVw

4 жыл бұрын

@@richardroope1424 If it doesn't bleed off after you pump it up to 20 then its probably fine.

i wish i have a mechanic like you in my reach..

@CoolAirVw

Жыл бұрын

thanks for the compliment.

@dane4890

Жыл бұрын

Me too

@nedimmrsic4650

Жыл бұрын

@@CoolAirVw i have similar problem with my audi a4b6 1.9tdi.. when im in 2nd gear i floor it, and until it gets to 2100rpm it feels like im driving 1.0 engine, the moment i reach that 2100rpm turbo starts, and it rips tires. my ecu is ABT mapped to arround 170hp, im not sure, but i feel like it should be more agile in low rpms and have better acceleration.. any ideas of what sould i check? our mechanics here are nowhere near your knowladge lvl, pls give me some pointers.. and sry for broken engl.. :S

Great video! Having code “P17705 - Pressure Drop between Turbo and Throttle Valve” on a 1.8t, stored associated with a boost problem, might want to give this diagnose a try.

@CoolAirVw

3 жыл бұрын

Not too much the same on 1.8T as this one. Look for boost leaks and check the wastegate adjustment. Lack of power or clogged cat makes boost trouble codes also. check diverter valve.

@jakobbedholm3352

3 жыл бұрын

@@CoolAirVw I know, but your way of using the gauge was well done. The N75 valve basically has the same layout, and I’m worried it could be the problem. The diverted valve is a good point too! Thanks for the reply.

@CoolAirVw

3 жыл бұрын

@@jakobbedholm3352 You cant run output tests with engine running on 1.8T so vacuum checks have to be different.

@jakobbedholm3352

3 жыл бұрын

@@CoolAirVw oh I see.. well I did some output test, and all responded. Did a smoke test and no leaks. Did a short driving log, and saw a small hiccup where the MAF sensor dropped, so i am not sure what to make of that, but a longer drive will definitely give a better reading. I did purchase a new diverted valve just for good measure.

@CoolAirVw

3 жыл бұрын

@@jakobbedholm3352 did the maf sensor drop out cause the hiccup or did the hiccup cause the maf sensor drop out?

Where did you get this vacuum pump, I want to try to diagnose the problem myself first on the car

@CoolAirVw

4 жыл бұрын

you can get this style of hand vacuum pump everywhere. Oreilly auto parts carries them. Harbor freight has a crappy one. Amazon, ebay ect.

hello friend, where in the US do you work, I have a problem with my vw cc car, I changed the turbo and the wastegate valve is not opening, I tried the solenoid and it has very little air pressure, it is very significant, what do you think it could be?

thanks

@CoolAirVw

Жыл бұрын

welcom e

hi, on my pasat b5,5 TDI 130 hp . my turbo actuator is working all the way with vacuum pump the same as yours But or I think the n 75 valve cannot move the A turbo actuator enough just 1 centimeter. . Do you think if i change n75 would be ok? do you think the turbo actuator should all the way up? when the car start also i didn't find any holes in vacuum pipes any idea what should I or could do thanks

@CoolAirVw

2 жыл бұрын

please explain how you came to that conclusion? Is the actuator moving all the way to the sop? If you use a hand vacuum pump will the actuator move all the way to the stop?

When repeating your tests on a BLS, my vacuum at the tandem pump was good - 25. But I realised actuation of the egr solenoid (n345?) was robbing vacuum and what was getting to the n75 was sometimes 25 and other times just 5. If I unplugged the egr solenoid the n75 would always receive 25. With the egr solenoid connected, blipping the throttle would also instantly trigger vacuum entering the n75 to drop to 5 indefinetely. Would you be so kind as to advise whether you think this is a faulty egr solenoid? Surely it shouldn't randomly leave the n75 with virtually no vacuum to work with? Strangely my codes were an occasional P0299 and a couple of glow plug open circuits. With the way my vacuum to the n75 is behaving I would have expected very erratic boost. But when it isn't sent into limp mode the power and response is great. Confusing. Any insights from your knowledge is very much appreciated.

@CoolAirVw

5 ай бұрын

No it should not. You didn't state year make model, but I'll assume its something similar to the 06 in the video. The valve cover has a vacuum chamber built in to supply with vacuum if there is "low vacuum circumstance" also there is a one way check valve to seperate "important" vacuum functions from not so critical functions. Check those things.

@03056932

5 ай бұрын

@@CoolAirVw golf 2008 1.9tdi BLS. I just tested the vacuum line going from the egr exhaust cooler solenoid to the exhaust cooler and it holds no vacuum. Which is typical because its hard to access and I'm reading to replace the diaphragm of the valve I would have to replace the whole cooler and not just the valve controller stem which I see in parts stores. Have you dealt with this part much? Seems like the bls is less common than the (seemingly) simpler and better designed ALH etc. Thanks again for any help

is this a cause even you can move the turbo actuator high enough - by hand Do you think it still could be fullc arbon ? cause i can move it the turbo actuator all the way, but i can feel it its not so smoothly / i did the clean the turbo with oven cleaner and its much better move now; might i wrong; do you think i should buy a new turbo from Volkswagen thanks so much, i think you help lot of people

@CoolAirVw

Жыл бұрын

I do not know.

well done you did all the right diagnosing to find the fault. The hole was anyone guess some idiot more than likely.

@CoolAirVw

4 жыл бұрын

thanks

Where did you get your vacuum pump and hoses? Also, what program are you using that's caked vcds? How do I get that

@CoolAirVw

3 жыл бұрын

hand held vacuum pump is available everywhere. Yes, VCDS. get it at ross-tech.com or cascadegerman.com

Very useful video. I have a similar problem on the exact same car. I had the turbo rebuilt by a reputable turbo rebuilder, installed it, and the car runs like crap. No power until 2200 rpm, black smoke, rapping noise, acidic smell from under the hood like the converter is overheating. It ran better BEFORE the rebuild. If I remove the hose from the VNT actuator it's a whole different animal. Tons of smooth power, no significant smoke or noise. Ran some tests. Put vacuum to the actuator and the rod moves smoothly and holds vacuum. Checked the solenoid and it puts out good vacuum to the valve. Do have the code P0299 low boost. What to check next?

@CoolAirVw

5 жыл бұрын

black smoke and low boost probably means a boost leak. Look for splits in hoses or disconnected hoses. I have a video on a boost leak, but its a different car. Point of me sharing this video link is, smoke plus low boost is boost leak. kzread.info/dash/bejne/eYGl0qufkZmZmqQ.html

Very informative video. The turboboost solenoid valve of my polo tdi is producing a Tik-tik noise . Is the valve damaged?

@CoolAirVw

3 жыл бұрын

I wouldn't assume that the noise makes it damaged. but if it cant control vacuum then it is damaged.

Well done very good vid. One qstn though, in fixed condition of error, what is the reaction time to turbo after you floor the throttle in terms of seconds?

@CoolAirVw

3 жыл бұрын

thanks for watching.

@umuttokatli65

3 жыл бұрын

@@CoolAirVw you are welcome. And what is the response time of turbo to throttle??

does this work with the check engine light? i don’t understand if my actuator is bad or if the check engine light cut power to it. i’m not great with cars so sorry if i don’t make sense

@CoolAirVw

4 жыл бұрын

The trouble code that you saw me get out of the computer using the laptop with the vagcom system will trigger a check engine light. Be sure to watch my other videos on boost problems.

Had this error code alongside a few other indicating the same issue. It turned out to be a single small hose that chipped a bit at the end slipping off. I cut it off a bit at the end and it's all back to normal now. It was a small hose located just over the turbo.

@CoolAirVw

Жыл бұрын

excellent!

Bonjour monsieur Bravo Pour votre bon diagnostic Vous permettez, juste une question Sur le graffe on vois la couleur qui est la pression demander par le calculateur Par Contre si la pression réel qui est de couleur jaune n'apparaît pas sur le graffe A ce moment là à votre avis c'est quoi le problème ?

@CoolAirVw

Жыл бұрын

Si votre ligne jaune ne s'affiche pas sur le graphique, l'échelle est peut-être mal définie. Quel nombre est affiché dans le groupe 11 champ 3 ?

Any ideas why someone would have drilled a hole in the valve cover / vacuum reservoir? What would they be trying to achieve (other than causing this issue)

@davidmbell

6 жыл бұрын

And also, if you fitted a camshaft to it recently, was the hole there then, and if so, were the owners getting this issue back then too?

@CoolAirVw

6 жыл бұрын

I have no idea why someone broke the top off and drilled the hole. The customer was having intermittent limp mode before and after the cam.

@stevenr21

5 жыл бұрын

Maybe they mounted a vacuum gauge?

Hi mate, i have simler issue and no one can see to find my issue. i have changed and swapped everything. i have a bigger turbo fitted and mapped. was runninng fine in my a4 sallon but now i changed to avant same engine code and put my turbo and ecu on to the avant. but if i rev car and hit breaks i lose all vac. if i drive and press my brakes the brake pedal goes rock solid. Could this setup require something like boost bottle to hold more vac or do you think tandem pump is going? N75 is replaced and simplified, no egr or flaps. vac line come from main vac too the N75 then from n75 to turbo actuator. Car is AUDI A4 B7 Avant Quattro 2.0TDI BLB PD140 (Ecu is from 2005) body is 2007. Some mechanical mods (Witch i had on my saloon and had no issues was mapped by FADR) 120% injectors nozzles GTD2263VZK running (3.1bar) BKD Inlet (flaps delete) EGR Delete ASV Delete MAF Delete try to give you as much info as i could hope you have some ideas i can try.

@CoolAirVw

2 жыл бұрын

Dont know.

@Ni1kko

2 жыл бұрын

@@CoolAirVw bit blunt but thanks anyway worth a try.

Being a cheapskate I would have put a self tapping screw in that hole, much cheaper than making VW richer.

@CoolAirVw

5 жыл бұрын

Certainly was an option and was considered. Customer wasn't cheap though and after considering that the cover had been broken off and glued back in place we thought it might be nice to have it right, for longevity.

@ninjagame69

4 жыл бұрын

Photography is not enough

@51coronet

3 жыл бұрын

Or JB weld it shut haha. I would do the exact same.

So I am having the same issues as what the vehicle in the video is having. I found a couple vacuum lines that has holes in them. I replaced every vacuum line I could. I'm getting 25 inches of mercury from source vacuum but only 15 at n75 valve. No holes in the valve cover no other vacuum lines to be replaced.

I have a vow caddy 1.9tdi that goes into limp mode bringing on p0299 low boost If I clear the code the van flys and can be like this for days and sometimes it will last for minutes before it goes back to limp mode I have had it smoked tested for leaks and it was ok When the code is clear the van boosts very well and if you clear the code when going along it will fly again Any help on this

@CoolAirVw

5 жыл бұрын

try the tests in the video

and also this came up from computer 19586 - EGR System P3130 -35-10- Regulation Range Exceeded-Intermittent 17964- Charge Pressure Control P1556 -35-10- Negative Deviation-Intermittent

@CoolAirVw

2 жыл бұрын

Overboost and underboost, probably means something is sticking. Check vanes of turbo for sticking. I have other video's on this. Graph boost to see what is actually happening right now and diagnose it accordingly.

Also inspect the intercooler for signs of damage.

hi just one question, can I clean turbo on Passat b5 with special spay to spray it inside the EGR valve when the car is on with full power around 4000 rev engin

@CoolAirVw

3 жыл бұрын

uh, you can do whatever you want. Lots of people try improvised cleaning methods. I dont know that I would rev the engine to 4000 that might be a it excessive. Personally I wouldn't spray anything in the intake (or egr)

@dez945able

3 жыл бұрын

thank you so much, do you have a video that how to clean turbo, thanks Passat b5.5 1.9 TDI. 130 hp I think you only smart person around me