Audi TT 225 Engine bay basics

[@AndyFledgeMoor]

You're a f**king legend. Simply by explaining the PCV section, you directed me to finding a diagram and eventually diagnosing a fault in my system. My Vacuum Solenoid Valve (Purge valve) was split apart!

[@BWSTT]

Happy days, glad I could be of assistance

[@DodgyDave]

got to be one of the most informative KZbin videos I have even seen ... subscribed👍

[@donnelhuddleston2478]

Thanks, I’m really fond of the Audi TT Quattro 225, so please keep up the TT content.

[@marksouthard8907]

Excellent video - thank you for the great content! I just picked up an ‘01 225 TT roadster and am bringing her back to life. I owned the same car back in 2001 (new), so this is my automobile 20 year reunion! 👍

[@marksouthard8907]

@SaintWill just hit the 2 year anniversary with the 2nd 2001 225Q Roadster. A whopping 2K miles added in those two years 😀

[@daxpurcell9859]

I’d like to talk about it I have a 2004 225q and it’s been a hassle bringing her back to life

[@sphinxtk]

Way late on this but I’m nosing around KZbin familiarising myself with these engines as I’m after an S3. Great video 👌🏼 just the right level of detail.

[@BWSTT]

Happy to be of help

[@4L10]

Thank you very much. Very well done! I love mine with all of its 100 meters of hoses down there. Slowly changing them all with EPDM hoses. I was tempted by shiny silicone ones but turns out those aren't as good for water cooling system use after a quick material comparison. Just a note for everybody thinking about it. Go for it for air hoses but don't for hoses which will carry hot water. Cheers!

[@mattm8736]

Great videos mate and I'll give you a shout for work on my new 225!

[@matthewfinlay3443]

Thanks alot for this vid man ! Very informative to anyone who has a BAM engine :) Keep them coming !

[@bakeralec2377]

You prolly dont give a shit but does any of you know of a tool to log back into an Instagram account? I stupidly lost my password. I appreciate any tricks you can offer me

[@tristanzayn830]

@Baker Alec Instablaster :)

[@bakeralec2377]

@Tristan Zayn Thanks for your reply. I got to the site on google and im in the hacking process now. Seems to take a while so I will reply here later when my account password hopefully is recovered.

[@bakeralec2377]

@Tristan Zayn It did the trick and I now got access to my account again. I am so happy! Thank you so much you really help me out!

[@tristanzayn830]

@Baker Alec Glad I could help :)

[@Mark-ov9hj]

I'm impressed, WOW! Very good video, very informative. Thank you!

[@96BigWill]

Look forward to seeing a new video uploaded by you, always informative, cheers!

[@VinzSpades]

Yeah ! Thanks a lot. This kind of video is really helpful !

[@Dre50874]

Informative video mate, keep them coming

[@GarageBuds]

Great video! Hope you keep posting. Learning a lot as I do my own work on my TT

[@glennmoss7719]

Amazing video thank you so much. I have just bought a MK1 Audi TT 1.8. I am very happy with the car but I just want to learn more about it so this really helped. Could you go through the exhaust system please as at some point as I want to understand it better. Thanks Glenn

[@spotontheroad1]

Really good video. Pitched just right.

[@HiPpYBoAtErS]

My car is running great mate thanks back in france

[@topmendia]

Great video. I have just bought a Audi TT roadster with APX engine. I appreciate your video for better understanding engine bay. Really helpfull for my project on this car. I noticed it has oil leaks. I desassembled intake mainfold to check pcv valve and hoses. The hose that goes from pcv to intake mainfold was totally broken and all area was full of oil. I tried to clean all the area and I will install new pcv valve and hoses as soon as I receive them. I wonder if you know how may I check PRV valve ( Not PCV); mine is 06A 129 101 (without letter). It is expensive and no aftermarket. Although It is easy and cheap to buy 06A 129 101A or D , I have been informed that they are not compatible with 06A 129 101. Hope you will be able to tell me how to test this PRV valve so that I may be sure the complete system is working properly. Thanks and best regards from the basque country!!

[@jasont8342]

excellent video sir , i have an issue i took off battery neg and now i have crank no start while cranking tacho does not move any ideas new to audi tt 225

[@DougClaytonPrime]

Thank you for this awesome video. I am dizzy from all the selfie video parts though. STOP SPINNING AROUND!!! ;)

[@tri33er]

Great informative video.. can you do a vid on how to check your pads and disks? Are there levels to look out for like as in wear levels and where and when you would think about changing them. Thanks

[@tristantonybusheytail4367]

Hi great video I recently added a catch can to my bam deleting the pcv but I'm now getting a cut in boost at high revs I had fault code p0170 come up would this point to a leak somewhere

[@smgeraldo]

Many thanks for these great videos, very informative, much appreciated mate!👍

[@sherabnamdhak6485]

Really good video how about a talk through on the Audi Mk2 TDI engine as unfortunately I don’t have a Mk1. Lol.

[@R5GTT]

Excellent video 👍🏽

[@johnatello7363]

New subscriber here in the US. Do you have a video on how to replace a "passenger mirror signal?" 2007 TT

[@Hytrinas]

Are things a lot different on the 180fwd one?

[@misterdroneboy8999]

Great videos mate

[@raynbow6]

Excellent work! Cheers. Just what I needed as I hope to tackle most jobs on my 16 year old money pit, I mean TT ;-p

[@garythompson7078]

Great vid😊 I have a 2002 Bam that seems to loose power in top gear when accelerating for a few seconds then comes and goes. Backing off throttle improves it. Only seems to happen when engine is up to temp. Doesn’t happen with maf unplugged. New maf fitted and smoke tested system with no leaks found. Any ideas very much appreciated.

[@neilkennedy8071]

Gary Thompson N75?

[@lootcifer6191]

Learnt a lot in this video, good stuff. Also your audio kept spazzing out, not sure what caused this.

[@geoffreyrawlings9736]

Hi notice you've replace fixings hold down the plastic covers from Audi they are very expensive what are the ones you've used. THANKS

[@HourGlassLife]

Thanks man. I just bought a 04 it has the bea engine. It looks like yours. Do you know the differences?

[@laurentiubancila7675]

Hello BWS! I have a problem with my auq. All houses are new, but when I accelerate hard, it has some hesitation at the 3000 rpm and the boost is in waves. What could it be? I disconnected the n75 and maf sensor and it goes well, but underboost. I measure the n75 cold it has 0.28 ohms and when is warmed 0.29 ohms.

[@chronicmachines6717]

Looks like you got some good TT content

[@steffenscheibler5849]

The real drawback of the N249 delete is that the N249 opens the piston of the diverter valve (DV) under medium throttle when there is no boost. This allows air to go from the air filter directly into the intake without having to bypass the relatively high restriction of the turbocharger, which won't be making any boost at all and mostly just standing 'in the way' of the air. This happens when the engine RPM is ~2000 or lower (the rpm varies a little depending on if you have the 150, 180, 225 bhp turbo engine). This in turn gives you better throttle response and power delivery when you are running in N/A mode, so basically most normal daily driving. You can hear this working particularly well IF you have a metal turbo intake pipe AND relocate the dump-valve to be directly in-front of the throttle body... on a cold engine in particular you can hear the air flow change suddenly at 2000rpm on the BAM engine as the N249 it closes the DV. With the 180bhp 1.8T it happens lower down, around 1700rpm. The drawback of keeping the N249 is that the system is prone to going bad. It can be the N249. it can be a vacuum line. It can be the vacuum storage. It can be all of the above. An aging DV can also cause latent issues as well (sticking due to dirt, sluggish, worn spring,...). So overall, with these engines now being older, an N249 delete will often make for a 'smoother' engine, but it will be less powerful in NA mode, less responsive in NA mode and you will get high boost spikes just as the throttle closes (which a working N249 mitigates as it pre-opens the DV). The N75 is just to be treated as a consumable. Change it when you change your tires (tongue-in-cheek, I know...). I've had a few Audis and the N75 is just a not built for long life.

[@BWSTT]

From what I've read and understood, the function of the DV opening on partial throttle isn't actually utilised on the me7.5 ecu

[@steffenscheibler5849]

@@BWSTT hmm, I have the BAM engine and it definitely does. Year 2000. But also I have a tuned ECU. I suppose I have to go and test now. In the name of science.

[@paulbolton8511]

Hi mate on my tt with the bam engine I'm getting a p1555 is that that there's to much air passing the N75 valve cheers bud

[@Brad8261]

Mate you’re a legend. Can anyone tell me if that pcv valve stuck open would it cause p0172 system 2 rich? Have no leaks buts suspect this valve is gone, have got a replacement and also the prv valve too

[@BWSTT]

If the pcv is leaking, and the pipe after the valve is split then it will pull in unmetered air at idle

[@eclectarama]

Really helpful video. By the way, how did you get on with your Haldex Gen. 1 controller swap [was it the same car?]? I'm now faced with taking the used Gen. 1 lottery as the original is now dead.

[@user-my3km5hv8w]

hi great video (just I am not that smart) sorry. please i was hoping you could help as my sister has bought a 1999 225 tt (apx) a short while ago it has a rough idle but with the maf sensor unplugged it drove much better (so she had been driving like this for a few weeks) but now the rough idle has come again even with the maf still off!! Any ideas what this could be? or where to look for leaks?? p's tried a brand new maf got Even worse! so with or without a maf it has terrible idle issues, any help please would be appreciated if you read this, thanks and I will happily buy you a drink too cheers

[@BWSTT]

J have a look under the intake manifold, I would strongly suspect the hose that comes off the centre underneath being split

[@user-my3km5hv8w]

@@BWSTT hi thank you really appreciate you replying, would I have to take the manifold off to repair to see this? (as I am not fully confident in doing) but either way I will try whatever you tell me to do.. will get back to you soon and let you know how I got on. ps will not forget that I owe you one 🍺 thankss

[@BWSTT]

You can remove the cover In front of the manifold to get access, but you can put your fingers down in between runner 2&3 and feel the pipe I'm referring to

[@teithansen8663]

Very informative video, many thanks. What’s the difference on a APX engine and BAM engine ?

[@BWSTT]

I could do a whole separate video on different engines, but essentially the apx and bam differ in the management, wideband Vs narrowband, and the vvt on bam Vs sai on apx for emmissions

[@teithansen8663]

BWS TT thanks for answering. To make it short, basis your description in the video my TT Roadster 225 has a APX engine, anything special I should be aware of, it has 95.000 miles on the clock ?

[@bossjones398]

Question if your Audi getting no spark ⚡️ what is the most common problem.

[@dopiaza2006]

What's the pipe coming off the top of the throttle body?

[@BWSTT]

Goes to the carbon canister system

[@stuartwinstanley4949]

A fantastic video,I have a 2001 TT, my problem is that sometimes it will smoke when warmed up or after abit ov spirited driving,IV deleted the n249 and fitted a catch can thinking it might have been the pcv fault,any ideas on the random smoking ☺

[@BWSTT]

I'd look at getting a compression test done, but also check that your catch can is in the optimal position and functioning fully

[@stuartwinstanley4949]

@@BWSTT thank you I'll be checking it next 👍

[@mhoga7899]

Hi, BAM, BFV and others identify the type of engine in your TT… they are stamped in the engine, were are they stamped exactly …?

[@BWSTT]

On the thumbnail image, right at the top of the S in Basics, there’s a small tap sticking off the front of the head, it’s stamped there

[@mikeedwards8165]

How do I check one my fans are not cutting in and why did my wiper blades stop working sometimes and he is a bump and I start again

[@ohmygod7361]

Which air filter & cover is that looks tidy.

[@peterpontius]

What system is the Carbon Fiber Air Intake? I haven't seen one like it before.

[@blackanddeka]

gets the thumbs up from me

[@ruialmeida5217]

excelent video

[@1111rikki]

badass video thanks haha

[@mjbstorm]

Thanks mate helps alot that

[@gurvindersian1979]

Good video

[@HiPpYBoAtErS]

thanks for the video bud

[@BipolarSteve83]

Where do you live we need to be best friends I need somebody with knowledge around me pulling my TT out garage in few weeks to start work on

[@a762user]

What brand of intake system is that? Is it still available for sale?

[@AndyG_MTB]

Does anyone know where the carbon canister connects on the bottom?? Iv moved mine to do the timing belt and can't find where the bottom bung connects?!😂

[@BWSTT]

Bottom goes back to the fuel lines area as it’s going to a vent line

[@drddddd]

After revving when the clutch is pressed down the rpm goes below zero and then it comes up again and jumps a bit.. is that just a dirty throttle body or is it something worse ? Sometimes It seems like the car is almost dying. Apx engine.

[@4L10]

Hi, clean the throttle body, re-set it. If that doesn't fix it, clean(with iso alcohol) or replace MAF or both. If neither fix works, take it to a VAG pro. Can be one of the hoses, fuel lines, so many things. :D

[@JorgeR000]

donde compraste el filtro de aire mishimoto?

[@tindraxx7226]

Puedes ordenarlo online

[@bigive2]

Can you point out where the air intake temp sensor is ?

[@BWSTT]

Front side of the intake manifold, at the throttle body end

[@bigive2]

@@BWSTT brilliant thank you very much 👍

[@blackanddeka]

can you do one on overheating

[@BWSTT]

I'll try, just depends what jobs come in

[@blackanddeka]

@@BWSTT i gt one sitting here

[@stevesloan6775]

Maf ... a given equivalent distance below “sea level”. The lower you are the more freaking dense the air is per/ cubic centimetre with sh#ts and giggles how quick the power can be put down. 🤓🖕🏻🤜🏼🤛🏼😎😂👽🍀🍀🍀🤓

[@TheNorville2]

Thanks a lot for this vid man ! Very informative to anyone who has ah APX engine :) Keep them coming !