Thanks for sharing. I did my crossover, thermostat, and water pump only to have a leak reappear. Now I know something else to look for.

Such a helpful video showing the parts and part numbers. Thanks for taking the time to create this.

@MidknightMechanics

5 ай бұрын

Thanks very much for the feedback Beef.

after inspecting the top area of the block, that was my exact issue. looking at the antifreeze spray and pudding locations, and the fact that that end of the hose was shaking and letting antifreeze by, indicated that was the culprit... disconnected the fuel line to get to the hose, removed the thermostat to get the pieces, replaced the hose, reinstalled the same thermostat and problem solved. didn't have to take off bumper either. good video! 👍🏾

Love this vid, had the same problem and did job myself, after installing water pump and upper coolant pipe due to false diagnoses. Now i got a whole new coolant system damn there including thermostat. Gotta do that if u take the supercharger off. Which I can do in 30 min now lol

Very useful information man.i appreciate you truly. Very clear and precise Instructions. I. Not sure why your not over million views.i gave a "like"

@MidknightMechanics

4 жыл бұрын

Thank you very much Damion

Nice video Bro, you help a friend out greatly. Appreciate it

You legend. That's what my problem was!! I have been chasing it for literally months. I have had the supercharger off 3 times and I had replaced everything other than that pipe, as none of the other guides mentioned it. Thanks man!

@MidknightMechanics

2 жыл бұрын

Appreciate that comment buddy

Very good video brah!🏄🤙🏻 BTW these are my GOAT QB on my logo as you know.

Good Video very detailed, thanks for throwing in the part #'s

Bro your a beast for doing this...😲👍👍👍

Great info this will hopefully help with mine

Top notch video!!

Good video! 👍

You should really look into that 034 Motorsports tune. You wouldn't regret it after you see the advances they are making on the 3.0 motor. Great video! I am pulling my SC off and about to repeat your steps. Thanks!

@MidknightMechanics

4 жыл бұрын

Anytime Kevin. Makes sure to grab a set of 034's 3.0t SC bleeder screws for the reinstall.

For anyone wondering about adjusting the flaps on the intake manifold for reinstalling them, it's a relatively easy process. You simple press them down to about vertical, hold them there, push the rail down ensuring that the flaps are on the side of the metal tabs/dividers, hold the rail down, put one of the retaining bolts in and screw it down. Then put the rest of the bolts on and torque to spec. I couldn't find a video out there so made one for our similar A7 and posted it.

@vipersb1

Жыл бұрын

Or get a vacuum gun and apply vaccum to the flaps. That's how the service manually instructs the dealerships to do it.

@williamh.8590

Жыл бұрын

@@vipersb1 @@vipersb1 that would be great to do it the prescribed way and hopefully anyone working on these cars can afford the dealership or all of the tools. We all know that collecting tools is a lifelong journey and if you need it once, you or a family member or friend will probably also need it eventually.

3.0tfsi are notorious for coolant leak if there is a coolant leak its probably pcv also known as crankcase breather and thermostat housing can leak too or the water if one of them leaks i recommend doing all three because around 100k miles all of them would leak the crossover pipe breaks just be ready and the coolant pipe above the pcv also know as crankcase breather would break too but i got lucky it didnt break but you can do this at home intermediate level of work but the engine actually pretty strong timing chains are really good on these engines just change your oil every 4k miles if its the dct transmission is perfect strong af. Never had a problem other than coolant issue

Good video and thanks for the tips I saved your video to my watch list to help me when I do mines. How long did it take you in total hours to complete the job? And what was the hardest part? Thanks in adavance

Nice drain bucket...Go Pats.....next year of course!!!

What size bolts did you use in the radiator core support when putting the car into front carrier position? I'm thinking of doing my water pump and serpentine belt this weekend.

Exactly the same issue on mine

Hey really hope you see this today! Do you know what o rings you used for the crossover pipe and the thermostat?

I have an Audi A4. The dealer replaced the thermostat only due to a leak prior to purchasing the vehicle. After driving the car for a month I noticed a coolant smell after parking the car in the garage. Marked the coolant tank to see if the level dropped. It dropped 1/4 inch over a month. I can’t seem to find the leak. Seems odd they would replace the thermostat and not the water pump. My guess is one of the connections is worn or was damaged during the repair.

This pipe is such a common break. Mine just went. Im in there now. Hell of a pain to remove fully from the rear. Not enough videos showing this or actual removal from the special clip hidden in the rear.

Amazing Video! I am dealing with something similar and about to take the supercharger off as I can't pin point it. I assumed water pump as it leaks badly as soon as I pressure test it behind the pump, but it appears to be coolant leaking from just above the water pump everything about my water pump is dry. I am thinking it is this return pipe or the coolant cross over pipe, did you have a hard leak as well? Thanks

Good call on R/R the Thermostat and Water Pump at same time along with associated O-rings. A lot of items may not be the problem now but with 140K they probably wouldn’t be far behind. The extra cost of the T-stat and WP now will be well offset by the peace of mind and reduced work later. As long as it’s done correctly the W/P and T-stat are a good...While your in the neighborhood type of work. For 140K if you decide to remove the radiator for W/P access then radiator R/R would also be cheap insurance since you have to re install. Might as well reinstall a fresh new radiator. WP, T-stat, radiator and the two coolant pipes are a good start. The drawback is the timing belt probably won’t be too far behind at that mileage. Something to consider now instead of having to go back in later. If the OEM water pump lasted 140K miles then probably the replacement pump can last close to that assuming the rest of vehicle engine is good shape.

@MidknightMechanics

4 жыл бұрын

No T-belt on this engine my friend; chains only.

@stephencannon3140

4 жыл бұрын

Midknight Mechanics i was watching a Volvo w/p replacement video before this I guess my reply switched to this video. Sorry for the confusion.

hello amigo i have Q7 how can Take out that supercharge

Thanks for the run through on this repair. Any idea what the book time on this repair would be?

@MidknightMechanics

4 жыл бұрын

Carl- looks like I forgot to respond to your comment; right around 6-8 hours taking your time. I was in no rush, I have a bit of OCD and went nice and slow.

great video. How did the tune work out?

@MidknightMechanics

4 жыл бұрын

Thanks man. It's absolutely night and day. I had an APR tune on an A7 a couple years ago, but the cost was a rip off. I also had APR software on a B7 A4, that one wasn't bad at $499 for the 2.0t.. Otherwise, i also have experience with Unitronic 1.8t tune,(never again), and out of all 3; I wouldn't buy anything but Integrated Engineering again. The power is so smooth, with no lag, it now has the power numbers of an S6.

Do you possibly have the part numbers for the o-rings? Specifically the one that goes to the thermostat from the cross pipe. Also did you have any problems installing the vent tube (06E103213)? ECS tuning says that this part doesn't fit a 2012 A6 3.0T

@MidknightMechanics

4 жыл бұрын

Max I think n90316801 is the one you're asking about, but if you replace that $50ish pipe, it comes with a new o-ring on it. Also 06e103213 vent pipe is correct for the C7 3.0t. I checked my invoice from Audi, that is the correct PN- it stayed in place on it's own because of the guide pin built into it; no issues there.

Wow! I've seen the the water pump and t-stat done without even been in service mode. Now you got me concerned after I ordered water pump, t-stat, belts, etc. I will remove the supercharger, but also my PCV body needs replacing. That will have to be another day. How much coolant did you lose/replace?

Great Video. I have the exact same issue. My pipe failure was due to overheating from blown, hidden, cooling fan fusible links center of the firewall under the support. The fans stopped working and my wife was running errands. In her defense no warning came up on the cluster. So, that caused the front coolant pipe to fail in the same manner. This year the heater pipe finally followed suit. Though most of the job is relatively difficult, the access to connections at the rear pipe to heater hose and retainers are mind boggling. Did you remove the small pcv box and pipes and the flex line to the valve behind the head? I have to make a torx tool for this one! Thanks again for taking the time to make the video.

@MidknightMechanics

4 жыл бұрын

Appreciate the reply. How many miles on yours when that happened? I was praying to god car makers weren't still making and hiding those fusible links inline of power wires anymore. What a terrible design. I just replaced a few on a 1994 bmw 740i (under seat, carpet, under heat shrink tubing). I didn't remove the PCV box on the top of the engine, but i did remove the stainless fuel line, and intake runner flap assembly since they are right above that pipe. It was a challenge. The worst part was exactly what you mentioned, those small torx holding that pipe in place, and the heater core hose connections that are easier to feel than see. I did have to move/shift the flexible PCV pipe to be able to remove the coolant pipe in the end. The other thing, when i closely examined my front coolant crossover pipe from head to head, some tech had previously used a sharp pick to take the O-ring off the pipe, where it goes into the thermostat housing - it was all gouged up underneath the o-ring. So, had to replace that one too.

@khrvette

4 жыл бұрын

We bought ours preowned. Two owners before us both trading after keeping it for 30,000 miles. I think I know why. Ha. It had 70K on it last year when the fuses blew. No issues with the fans themselves before or since. Just crap fuses. Those circuits need to be beefed up with higher rated protection, not just cheap metal ribbon. When I took it apart it was obvious someone had already had the supercharger off. The pad that sits across the Vee was missing as well as 2 retainers that hold the fuel rail tubing. I was able to replace the heater tube without removing the intake runner. The plastic air injection tube was partially torn at the rear from the first guy so I separated it and pulled it up out of the way for access to the heater tube coupling, then cemented 5/16 fuel hose inside to seal it. I replaced the thermostat, waterpump, both tubes and all the o-rings. I love the car, fast as hell, but i don't want to do this again!!!

How fast were you leaking coolant? I have a leak. Same car, replaced the thermostat a couple years ago but didn't know about replacing the O rings on the head connectors. Most of my coolant pooling is slow and looks to be coming from the front but wanted to see if I should take the thermostat off to check the pipe/o ring you show here.

@MidknightMechanics

4 жыл бұрын

The leak was kind of slow honestly, I ended up having to drive home about 1 hour and the expansion tank still had coolant, and the low sensor did not trigger yet. If the car was running, it was a steady drip that ran down the front of the engine (from the pool up under the supercharger) and off off the belly pan. Don't forget to closely check the front coolant crossover pipe that goes from head to head. A lot of people have had leaks from this pipe. At the end of this job, I also had to replace mine but it was because a technician had previously gouged the plastic underneath o-ring where it enters into the thermostat.

If only VAG had made the coolant pipes out of metal instead of plastic... Going to have to do this on my Q7, luckily I won't need to remove anything from the front of the engine because there's a TON of room in the engine bay. Want to do the timing chain tensioners as well and I'm hoping it can be done without removing the engine because of the extra room under the hood.

@MidknightMechanics

Жыл бұрын

Yep you are super lucky on the space in the Q7. Same on an A8 with the 3.0t- MASSIVE space in front of the engine. Please report back if you think of it, after you tackle some tensioner work- that would be much appreciated.

You don't have to take the front off but video help me out but i left the front on and it not easy job lol

So i have a question for this repair, im doing the same thing replaced the coolant pipe under the sc as well as the thermostat yet its still leaking. Do you know what i might have done wrong or what else it could be?

@MidknightMechanics

3 жыл бұрын

John do you remember the oring coming on the new pipe (should have been pre-installed). Maybe it didn't seat correctly? Or it's the other coolant pipe, from head to head that they call the crossover pipe- that one is more common to fail than the one underneath the supercharger.

you make it sound so simple I really want to try and do it myself I took my 2012 Audi Q7 to the dealership and they said yeah it’s the hose and let’s just go ahead and replace the thermostat and water pump $2300 plus tax no thank you

@MidknightMechanics

Жыл бұрын

YIKES MAN. I feel like an independent mechanic that knows Audi would charge you $1500 for all of that. The hardest part about everything you mentioned is the water pump swap (cleaning the mating surface), and the heater hose swap- those are labor intensive for sure.

@MidknightMechanics

Жыл бұрын

I meant to also say, because Audi labor is just so expensive**..

Do you have any videos for newer models? I have a 2017 A6 3.0t supercharged that is under warranty and is getting repairs for coolant leakage.

@MidknightMechanics

3 жыл бұрын

Teresita I do not, but it's the identical engine and procedure that is in this video. The 2017 was only a slight body style and technology change. The 3.0t engine stayed the same. But isn't that going to be covered under the warranty?

@teresitad9516

3 жыл бұрын

Midknight Mechanics it is. I was just thinking for figure reference. Thank you for responding. Mine is a cpo and there were some leaks repaired before I bought it. It concerns me that the car is having leaks again. I bought it in October, it won’t be in cpo warranty forever.

@teresitad9516

3 жыл бұрын

I love my A6 it’s the Mythos Black.

I have an A7 with 105,000 miles on it. I do my own oil changes, stock engine - no tune. I noticed that on Motul 8100 x-cess, i get a low oil warning at 3,500 miles, and i'm wondering if that's related to the pcv. When i did the oil fill cap test, there is no vacuum pull like others have with the same clear issue, however, i do see a shit lot of vapors coming out when opening the fill oil cap while the engine operates at the regular temperature. So now i'm wondering if this is a piston ring related issue.

@MidknightMechanics

4 жыл бұрын

I hate to say this, but i have no doubt in my mind, you have some minor blow-by/consumption. It sounds like it's a bit more than mine, but it could be because of the different oils we are using. I'm using Mobil 1- 0w40, and i'm 1 quart low at the 5K mile marker. So i add a quart, and my change comes up not long afterwards, at 6K which i stick to religiously. If i were you, change up the oil choice (even though Motul is best of the best) and see if you get any more mileage before the low quart warning. Another super premium choice would be Ravenol, Liqui Moly and Rowe

@BoghyFL

4 жыл бұрын

@@MidknightMechanics Yeah, i was thinking about blow-by. I used Ravenol, Edge, Liqui Moly and now Motul. Ravenol to me was the worse, as far as burn smell from exhaust. Liqui Moley has the least smell out of those four. Never tried Rowe. All 5w-40 grades used here in South FL. The funny thing about this, I had the oil lab tested and they said that there are no issues found in the oil recommending up to 5,500 miles when was filled with edge (imagine 4,500 no lubrication like Audi recommended on that oil to be changed every 10,000k?) It makes sense why so many audis are fucked up at high mileage. They aid in the accelerated obsolescence in their engine wear. Normally I do it at 5,000. Now granted, the car is literally driven more often than none in Sport mode and manual. So not sure if that also has anything to do with this higher oil consumption.

Hello I have a 2011 Audi A6 Quattro s-line with a leaking Coolant Pipe . Do you know if you have to purge the Ac and recovery the freon to replace this part?

@MidknightMechanics

4 жыл бұрын

Hi Mary- you do not have to, when the job is carried out the way Audi intended the car to be serviced, by putting the front "lock carrier" in the audi service position. Make sure to watch my video to the end, you'll see what I mean. Some mechanics take the radiator and a/c condenser off the vehicle when it's not required what so ever, and you end up paying more for the fix because unnecessary work was performed.

I have questions regarding 2012 Audi A6 prestige on sale with 57k miles only in the Auction with a front damage , please can I share the pics with you and show you my concerns ??

@goodlifemedia6665

3 жыл бұрын

Haha no way, I'm the one who bought it

Dude,I am so fucking scared ! Have my Audi SQ5 3weeks, about two weeks ago the tank coolant was at Max,now it's below min... really not even sleeping to good thinking about this!

@fredwilliams7893

4 жыл бұрын

Is is the 3.0? I can buy a 2012 A6 but me to is scared as hell! My 08 infiniti M45 with 110,000 miles has been flawless! Although its not as fast as the A6 its definitely more rare. Im torn. not sure what to do!

@joedapro555

3 жыл бұрын

Don't stress too much. It could be a small hidden leak. That's what happened to me. Months past before I could identify the leak. Mine turned out to be the the vacuum pump was leaking oil onto the front coolant crossover pipe and deteriorated the seals/o-rings. I only saw coolant leaking once in a while. I didn't know I had an oil leak as well. My coolant level would go down from max about once a week to every other week. Then eventually it would leave wet spots on the ground at the same intervals. Everything he shows in this video are the main areas to find leaks. Additional areas to look for is leaking PCV valve and supercharger intercoolers.

@quattro4944

3 жыл бұрын

Maybe you was checking when the engine was hot and after when was cold ^^

@Sylique

3 жыл бұрын

Bro did you find out anything? I just got an A7 yesterday and now my coolant levels are low. Drove it from Virginia to pa

Great video.! I think I have the same coolant leak spot. But is very slow on mine now.. Could you add the parts numbers for the orings by chance? The ones for the coolant pipes on the front. Thanks

@MidknightMechanics

Жыл бұрын

Do you mean the ones on the front crossover pipe?

@MidknightMechanics

Жыл бұрын

Because the pipe that runs the length of the engine, front to back, comes with the ORings. And even the new crossover pipe, (oem, from say FCPEuro) comes with those orings as well.

@luiszubillaga1463

Жыл бұрын

​@@MidknightMechanics yes

@luiszubillaga1463

11 ай бұрын

Just fixed this, someone put a new pipe (URo brand) but didn't installed correctly and it was leaking. Actually the URO pipe is nice because is not plastic, is aluminum and more durable seems like.

Looking at getting back into the A6 market...I realize a professional inspection is recommended for all purchases but anything the mechanic/inspector should be looking for specifically regardless of mileage? Any known “Gotchas” on the A4/A6/A7/A8 market? Most likely A6 but keeping options open!

@TheEdd212984

4 жыл бұрын

I currently bought a 2015 A6 3.0t let me tell I love it I got it for 11k private seller with 120k alot I know but amazing car check out my KZread channel I got a video of it and also coming soon a HPS intake oh maintenance wise just did valve cover gaskets super easy and gonna do thermostat soon just cause those are common issues with these 3.0t engines parts only 60 on rock auto not bad just doing it looks like a pain in this video lol but shops charge around 550 for thr job might let them do that on mine and then waterpump my self since its literally under the supercharger pulley

@randallbrown4540

4 жыл бұрын

Have had my 2012 A6 3.0T for about 3.5 years so far these are issues I've had to fix : Thermostat Water Pump TSC Valve and Connector

I’m in the middle of this same project on the same car. Did you have to remove the high pressure fuel lines to remove that coolant pipe?

@MidknightMechanics

3 жыл бұрын

Hey Jon. Unfortunately, yes. It's in the shape of a Y if I remember correctly? Or a kind of messed up looking Y.

@macrolosses

3 жыл бұрын

@@MidknightMechanics does the car have to be in service position if supercharger is off? Im doing water pump, cross pipe, PCV on audi A7.

I have the exact same issue

@MidknightMechanics

Жыл бұрын

Sorry to hear.

What else will you have to remove to get that coolant hose replaced.

@Wootstapler

2 жыл бұрын

Basically if you're doing the PCV the fuel lines will come off and make it easier what about the back side

Are you located in San Francisco bay area? I would be glad to pay for your labor.

@MidknightMechanics

4 жыл бұрын

I wish I was my friend. I'm in MA.

Hey i got a 2012 audi a7 supercharger it started leaking coolant out of nowhere where did u buy all ya parts from

@MidknightMechanics

4 жыл бұрын

Right from the dealer and fcpeuro.com

@cscott585

4 жыл бұрын

@@MidknightMechanics thanks alot

Hey, any idea of many hours of labor I’ll be charged for this? Kind regards and thank you in advance.

@MidknightMechanics

2 жыл бұрын

No worries, I would say 4-5 for a dealer trained tech but more for an independent (8).

@naviharriram9785

2 жыл бұрын

Get rid of the car.

Mine just started blowing white smoke out of the exhaust with only 26k miles. I think the inter cooler has a leak and it’s going into cylinder 3 because I’m having misfires

@MidknightMechanics

3 жыл бұрын

Enzo that's a terrible sign man. Get to a dealer and cash in on the warranty.

@S54VR6

3 жыл бұрын

@@MidknightMechanics my car is IE stage 2 DP LOL you think they’d still warranty it?

Great video. A few questions. What is the need for removing the bumper & placing the car in the service position? Did you contemplate replacing the PCV valve while you were in there? And was the install of the leaking pipe difficult, i.e. was it a bitch to wiggle out? Also, where did you get any of the needed torque values or did you just use common sense when tightening things back up? Thanks again!

@MidknightMechanics

3 жыл бұрын

Appreciate that. I went into service position to more easily replace and clean the mating surface of the water pump, replace the drive belt tensioner, drive belt, and coolant crossover pipe. But, you don't have to use service position for the coolant crossover pipe, OR the heater core pipe that was under the supercharger which was my main issue. I did in fact consider replacing the (pricey) PCV, but it was already done at Audi during the last owner's service records. Nope, it wasn't hard to remove from the thermostat side, it was just horrible to unbolt from the rear side of the engine because of the brackets that hold it in place. For torque, i use a mixture of common sense after feeling how tight things are during removal, AND a Bentley repair manual.

@mechsuit80

3 жыл бұрын

@@MidknightMechanics Thank you for the reply, it's been a great help. Off to amazon to look for a manual :)

@richardgraham7672

3 жыл бұрын

@@mechsuit80 Just did the PCV and the rear coolant pipe on my C6A6 3.0T. All genuine PCV was about $170USD and rear pipe $38USD. You need to go further and remove one of the lower manifolds to get enough room to remove the PCV and that means you need to remove the fuel line - you have to depressurise the fuel system BEFORE YOU START THE JOB. You will need to replace all the top injector o-rings at $30/set per injector. The rear bolt for the coolant rear pipe apparently is a pain on the S4. On the A6 it's not so bad - as hey, they did fit a V10 in that engine bay. The main issue you have is the EGR pipe runs straight behind the bolt - I was able to undo this at the LHS combi valve and move it out of the way just enough to access this bolt. Other than that, it's pretty straightforward. PCV bolts = 9nm. Lower manifold bolts = 10nm. Fuel line bolts = 9nm. Fuel line union fittings = 40nm (use a flare nut spanner in conjunction with a torque wrench, and once you've installed them, fire up the fuel system again and check for leaks BEFORE you reinstall anything else). Supercharger nuts = 20nm. Really was a very straightforward job, but I'll be making a tool to compress the supercharger belt tensioner next time as that really does suck if the car is not in service position!

Would you get splatter on the hoses due to the leak?? I’ve been noticing white splatter marks on some hoses due to the leak landing on the belts while the car is on? Would you recommend just replacing the oil separator unit while I’m there??

@MidknightMechanics

2 ай бұрын

This one in particular did not create splatter but that was just good luck i guess. This one had a small stream that ran down the front of the engine case. I would definitely replace that PCV; Even if it's early in your service interval. I think it's an every-70Kmi service item.... Thanks to direct injection.

@thefittedfew

2 ай бұрын

@@MidknightMechanics I appreciate your response. I’ve notice some splatter marks and the smell of coolant. So I’m due for this repair and I figured I’d replace the PCV while I was at it. I’m at 84k miles currently on my 2014 Audi A6 so I’m going to get this done soon. Thank you!

@thefittedfew

2 ай бұрын

Another question, how long would you say it took you to replace that hose? Do you think with replacing the PCV valve also it would be a 4 to 5 hour job?

How much should an 2016 Audi A6 thermostat replacement cost?

@MidknightMechanics

3 жыл бұрын

www.fcpeuro.com/products/vw-water-pump-genuine-vw-06e121018l

ha i remember having to replace that pipe on mine and i got so mad i had to remove everything it was a pain that they run it under the fuel rails

@shanewhite7164

2 жыл бұрын

I know it sucks got to love it.... lol

2010 a6 coolant fan comes on when a/c is on but doesn’t come on without a/c any ideas what I should check

@MidknightMechanics

3 жыл бұрын

eric, doesn't your 2010 have 2 fans?

@eric1hd

3 жыл бұрын

Yeah it was my thermostat it was bad the fans would come on when a/c is on but the thermostat was turning it on.. ended up replacing thermostat and housing waterpump two intercoolers and a crossover pipe and intake orings etc..just because you had to remove everything might as well replace the waterpump and while bleeder one of my intercooler bleeder broke so had to replace them... shop did all the work 1500..

Do I need to remove intake manifold if I only want to replace water pump?

@MidknightMechanics

4 жыл бұрын

Nope!

@kyleformosa1847

4 жыл бұрын

Do I need put it service position in order to replace coolant pump?

I have the exact same car, but can't figure out how to get it in service position.

@MidknightMechanics

3 жыл бұрын

CE, watch this first, kzread.info/dash/bejne/d6BpzZJthJrPldI.html then use this link for the lock carrier www.audiworld.com/forums/a7-192/service-position-c7-platform-2993961/

@ceem4418

3 жыл бұрын

@@MidknightMechanics thank so much for the response. I now have the bumper removed, found the t30 connected to the radiator carrier...the rest got me confused. Can't find the t30 on top of the radiator and the lock carrier bolt positions. Now I'm confused, lol....I need your help please.

@MidknightMechanics

3 жыл бұрын

@@ceem4418 I just noticed you dropped this other message man. Did you get it?

My ac on my A7 sometimes works and sometimes doesn’t. If I drive my car on a hot day sometimes the ac will not work for the first 5 minutes and then start working then a few minutes later stop working and blows warm air. Anyone know what the problem could be??

@MrPangulo007

4 жыл бұрын

Replace,...... your car.

This problem happened to me about a year and a half ago , almost 2 years ago. Ordered new water pump and thermostat and crossover engine coolant pipe and bingo all good. BUT TODAY had the same issue happen just the same way. Coolant spewed out all over and covered my belts and fans with coolant. What happened to me this time ? Water pump again ?

@MidknightMechanics

Жыл бұрын

So Joerrel, the most common coolant crossover pipe connects the heads together - the pipe in this video that I call out, is a heater hose that runs from the thermostat housing to the firewall (heater core), and it deteriorated from all the heat cycles, and crumbled apart. You could easily have this same pipe needing replacement. When it leaks, it runs out of the thermostat housing, down the front of the engine, around/on the water pump, and drips right off the oil pan.

@joerrelsaguin4550

Жыл бұрын

@@MidknightMechanics Is that the pipe thats located in between the the crank case and fuel lines ? I don't know the exact name of the pipe but it's tucked between the crank case under the fuel lines. Do you have a time stamp for that heater core hose ? Sorry I was frantically tryna solve my issue 😪 thank you sir I appreciate your help man By the way my car is the 2011 audi a6 3.0t

@chrisbaker2605

Жыл бұрын

How much it was the full cost?

Hello, I’m trying to buy this Audi A6 2012 with 131000 miles in it, the guy who selling it He said I’m the second owner of the car, any recommendations for me what to look or ask the right questions? Thank you

@luiszubillaga1463

Жыл бұрын

Have the same car. Looked for control arms bushing, coolant leaks, oil leaks for valve cover gasket, PCV ( remove oil cap and check suction, small suction is normal).

Very sad basically every single damn one of these engines will have the same issue...just outside 50k miles of course. How many hours of labor do you think?

@MidknightMechanics

4 жыл бұрын

Yep; Unfortunately those plastics will always break down from the heat cycles. Most people (working on their own) have only found that the front crossover pipe (head to head) is to blame, but not in my case. If I had to guess, 6-8 hours, and I did not rush.

@kckrol85

4 жыл бұрын

@@MidknightMechanics It's crazy to me that for as many years as this 3.0T has been around that it has not been corrected! The motor mounts fail prematurely as well. It's unacceptable. Basically, this entire cooling system is a piece. Frustrating!

wish you would've shown how you changed the pipe. that thing is a PAIN IN THE ASS! ridiculously tucked in tight to the heater core hose, having trouble getting to it to remove it. I've got the same problem with it leaking. purchased all genuine Audi/VW parts through ECS tuning for about 170$ (thermostat, cooling pipe water pump) pump was HD brand... good video though!

@98f5

2 жыл бұрын

i did this, i remember being so mad about how hard it was to change a 50$ part

Was your car overheating? Or just losing coolant

@MidknightMechanics

10 ай бұрын

Just slow coolant loss. (Leak)

@Jaben620

8 ай бұрын

@@MidknightMechanics can you link the place where you found the parts?

Always broken lol.

I’m about to lose my mind!! I really gotta remove all this?!!?

@MidknightMechanics

Жыл бұрын

Sorry man, yep. Especially to get the PCV out also.

@paulywally3780

Жыл бұрын

@@MidknightMechanics I wonder what Audi charges for this job.. I bet these numbnuts give a 60k mile warranty too. Mine has blown out at 70k.. plastic 🤬🤬🤯

Audi's plastics, rubber hoses, seals...... poor.....

Sorry 2 min in couldn’t take the mic crackle anymore...

@JohnKaufmann

3 жыл бұрын

I must have hearing problems. Did notice any crackling!