VW MK4 2.0 Coolant Temp Sensor Housing Replacement (Coolant Leak Fix) '98-'04 | DIY

[@Mechani_Cole]

eManual Repair Manuals for Any Vehicle - shrsl.com/43l4o

[@slipperyslope3912]

Had no idea they made an aluminum version of this housing. I'm on my 3rd plastic one. That would have saved me 5yrs ago. 🤣

[@Havingbaby13]

Good job bro!!! Mine just started leaking an hour ago and I know the job isn’t that had. Thank you for the refresher- I’m trying to do mine tomorrow!

[@fredl8888]

Cheers Cole, great video! I broke the thermostat housing yesterday when replacing the ignition coil of a Skoda Octavia of the same generation so I'll have to replace that. Always good to someone else do it first, very helpful man!

[@Mechani_Cole]

Thanks Fred! That sucks you broke it, luckily this job isn't too hard. Thanks for watching and commenting, happy I could help🤙🏼

[@mariamiguel4778]

I think I have my answer with this video. My first car I have is a vw 02 Jetta sedan and I been driving it for 4 months it has a coolent leak now I know I would tell my mechanic to check that out. Thanks very helpfully videos!! 😊😊❤

[@FranklinArtSite]

I really appreciate you for making this video. It is exactly the problem that I am having with my 2004 New Beetle, 2.0 engine. It took a while to figure out where the radiator fluid was coming out. The smell was easily detectable well in advance of finding the location of the leak. The housing split along a seam in the casting. I imagine the extremely cold weather we had last year was at least partially responsible for the crack. I don't believe I had the correct blend of antifreeze in the system even though the car had been worked on by a reputable foreign car repair company. Cheers. Just the advice I needed.

[@Mechani_Cole]

These are the comments I like, I love that my videos can help people! Thanks for watching, glad you found the problem! Upgrading from plastic to the metal ones will also prevent any cracking and aging😁

[@willtoulan]

Awesome video thank you man. This vid had the best lighting and camera work for this job that I've seen. Very helpful

[@Mechani_Cole]

Appreciate the comment🫡

[@davidriley9194]

That fixed my really bad coolant leak! Thanks for the video and that saves me loads of money from taking it to the garage and i thought it was the head gasket!

[@Mechani_Cole]

Glad to hear! Wish i could make a job out of helping people save money🫡

[@maulerfranco666]

Really useful video! I have an 03 Jetta which had the same problem, and I was putting it off for way too long. The coolant temp sensor housing on my car was brittle and actually broke when I was pulling off the large hose! Everything's back together now, and I'm really glad I finally did it. Thanks, man!

[@Mechani_Cole]

Thats awesome hear! Glad this video helped you🤟🏼 Those plastic parts can be really brittle for sure, thanks for watching and leaving a comment! I am just about to post a video doing all the engine mounts on this same exact car. This was much needed and actually pretty easy as well😁

[@stevenherrera2635]

😮l bm❤ppmhjjjip0ppppp😊😊😅0⁰op00099

[@markschlechte6106]

I believe this task is is in my future so just wanted to say great job on providing lots of detail from start to finish.

[@Mechani_Cole]

Much appreciated, glad it wad helpful. Best of luck!😁

[@huggyb2007]

Great video, I am attempting to do mine today

[@charleymyrick4089]

Vice grips will make your life easier with the clamps they will pench down and hold the clamps open. just thought you should know and you have me very valuable information and I thank you

[@Mechani_Cole]

Not sure how many of these you have worked on, but vice grips will only work sometimes due to the angle and location of the clamp. In the tight spaces, the vice grips are too big. Thanks for watching and commenting, I appreciate that🤙🏼

[@charleymyrick4089]

@@Mechani_Cole I can see your point of view they won't help every time but when you can use them they sure do help. Just trying to be like you and pass valuable information to the people who need it. KZbin is a powerful resource and people don't appreciate it the way it should be. Thanks for the video. It Definitely made my life easier

[@Mechani_Cole]

@@charleymyrick4089 totally agree! I actually appreciate your comment and sharing any tips, thank you for that! Happy to hear my video was helpful🤟🏼

[@charleymyrick4089]

@@Mechani_Cole I was an standing in my kitchen drinking lemon drop shots and came up with a idea we need to invent you know how fantastic floppy headed box end ratchet wrenches are we need a 3" vice grip Pliers that the end will swing left - right where you can get them in the really hard to reach places

[@Mechani_Cole]

@@charleymyrick4089 not a bad idea there! Like flexible locking pliers🤟🏼

[@willyborelli2280]

This helps a lot, o just have my done ✅ after watching this video 🎉

[@Mechani_Cole]

🫡

[@vgrof2315]

Question - The small hose clamped on the thin tube at the upper most part of parts worked on. What does it do and what is it connected to at its other end (hidden)? I suspect it's an overflow of some kind. Thanks.

[@Mechani_Cole]

I believe it goes to the overflow tank

[@vgrof2315]

@@Mechani_Cole Thanks

[@Sir.AdamsVIII]

Informative and humorously entertaining.. subscribed .

[@Mechani_Cole]

Much appreciated 🤟🏼

[@masonpugh3637]

What type of flange was that you removed the very first one that's bent and has a small connector on the end mine's broke

[@admiralhackett7686]

I have an 02 jetta that's been giving me grief, pretty much identical everything around the flange, but the metal pipe that goes over the second stud won't lift out of the way, it's securely held in place. Any insight on how I can move it?

[@Mechani_Cole]

Did you remove the bolt on top that holds it? Sometimes you just have to pull/pry it a little harder

[@ohska7735]

@6:07 Nasty! Nice work man

[@Mechani_Cole]

Yummy stuff! Thanks for watching bro!

[@m1k3y992]

I bought the alloy coolant flanges that this guys is putting on and kept having leaks so I've put new plastic ones on and not leaked once

[@Mechani_Cole]

First comment mentioning that. But definitely good to know🤙🏼

[@MightyNib]

Great video! Thanks a ton my guy.

[@mndzy4]

i’m 3 years late but what should i do if my new gasket for the aluminum part ripped in half while i was putting the new part on? do they make those separately? if so where do i get it from

[@Mechani_Cole]

Yes. They make them, call the local automata store and ask for a new gasket. If they don't have it they can usually order it

[@FEXNTGLXW]

I know I'm a year late but any guess's for the 05 mk4 2.slow that's leaking coolant I've replaced the housing sensor and thermostat I'm thinking warped block hopefully not but cheers if you say the same 😂

[@Mechani_Cole]

Can you see where it's leaking from? If it's a head gasket, it would leak right where the engine block meets the head. Lots of places it can leak from

[@FEXNTGLXW]

@@Mechani_Cole right out the bottom bolt of the Thermo housing I was thinking gasket too but I have a feeling my jetta would throw a fit if it was the gasket

[@Mechani_Cole]

Have you replaced the Thermostat housing with a new part and new gasket? Replace that and it will fix the leak. What do you mean by "your car would throw a fit if it's a gasket"?

[@FEXNTGLXW]

@@Mechani_Cole I've replaced the housing twice cause the og was trashed from the last dude I bought it off of and the second was a metal one that was warped from factory Ngl I haven't tried the gasket cause this is the only mode of transport until I get a truck and I have been biting my nails on that And a tiny bit of info of my mk4 God knows how many owners previous one smoked so much that the headliner is gone granny sag mode, error codes some are dummy codes others are like the cat code and egtr code, first actually bit of maintenance I got done on it found out from the guy I had change the serpentine for me show me that 32 teeth were missing and somehow it still started and found out that it had an engine replacement Safe to say I probably shouldn't have gotten it but now I'm neck deep in coolant 🤣

[@jamesmike8192]

Best video yet

[@Mechani_Cole]

🫡

[@frankpineda1832]

Hey you got to work with what you have 👏👏👏👏👏👏👏🙏thanks

[@markuscooper2433]

I’m trying to remove the bolt that holds the metal line and the part of the flange that mounts to the engine block. The bolt is already about 85% out, but after about 3 rotations the bolt clicks and recesses those 3 rotations. Any ideas how to get it out the rest of the way?

[@Mechani_Cole]

Is it because the metal on the metal line is hitting the top of the bolt? It should just come right out. I had to push up on the pipe to get it out of the way to remove the bolt. That would be my only guess, hope this helps🤙🏼

[@markuscooper2433]

@@Mechani_Cole that was it. The metal line wouldn’t budge so I had to remove the air box to get leverage to be able to lift the pipe up. Thanks a ton for the reply! Appreciate the help and great videos! 🤙

[@Mechani_Cole]

@@markuscooper2433 awesome! Glad I could help! Thanks for watching🤟🏼

[@EL-Duder-Reno]

Nice video, what's the like for the thermostat housing. Thanks

[@EL-Duder-Reno]

Link.

[@Mechani_Cole]

Thank you! We didn't end up doing the thermostat housing on this one. However, it is VERY easy to do, probably easier than the coolant temp sensor housing. After you drain the coolant, just remove the hose clamp, then the hose. After that remove the 2 bolts holding it in and it comes right off. Replace the thermostat to, sometimes they get stuck so just pull on it a bit. But have a bucket ready as more coolant is behind the thermostat and will leak as soon as you pull it out. Replace with new parts and don't over tighten the aluminum bolts. Make sure to "burp" the system so no air is in the system after doing all this as well. 👍

[@josephorr6414]

Why can't I find a whole flange kit for a 2.0? Are 1.8s the same?

[@Mechani_Cole]

Not sure, I've only worked on the 2.0's myself

[@sletourneau3]

Currently chasing a leak in my mk4 golf, totally getting the aluminum parts now, aaaand the tools 🤣 great video, thanks for making it. 👍

[@Mechani_Cole]

Hopefully you find the leak! Thanks for watching, glad the video was helpful😁 Best of luck!

[@4777512]

what is that thing you took that hose from and is connected to the airbox ?

[@Mechani_Cole]

That's the secondary air pump hose. Here is a link to one - amzn.to/3HK8RSX

[@stripeytawney822]

You had me at "11year old schoolgirl"...

[@Mechani_Cole]

Haha, thats great!😅 Thanks for watching👏🏼✌🏼

[@stripeytawney822]

@@Mechani_Cole thank you for putting useful content up. Good for at least 30 IQ points for this dummy to be able to watch it done before getting after it myself.

[@Mechani_Cole]

@@stripeytawney822 appreciate that! & don't feel bad, I usually watch a video before every job I do. Then I just explain in my own terms. "Monkey see, monkey do" works great for me! If I had to read it in a book, I would most likely fail to remember. 😂 Videos help so much!

[@6sinsero]

Thank for this video

[@Mechani_Cole]

Thanks for this comment🤟🏼

[@FantaLaStrada]

great video thanks a lot!

[@AustinJD17]

would a bad coolant temp sensor or even a bad thermostat cause no hot air to blow inside the car? or would it be more likely to be a bad heater core?

[@Mechani_Cole]

Heater core most likely

[@devanthomas8653]

What are the two sensors on the outlet I know the engine coolant temp sensor but don’t know the other onr

[@Mechani_Cole]

There is only 1 sensor on the outlet to the best of my knowledge. Just the coolant temp sensor on top

[@devanthomas8653]

@@Mechani_Cole weird mine has two

[@devanthomas8653]

Gotta 96

[@Mechani_Cole]

Interesting, can't say I'm familiar with the '96 honestly

[@Chicago611]

Great video, thanks 🙏

[@Mechani_Cole]

Thanks for watching, happy it was helpful🤟🏼

[@DarkManagerful]

Was the original coolant orange or was it a watered down pink?? TIA

[@Mechani_Cole]

Watered down pink. But overtime, this coolant can appear orange when it is really old. This hadn't been changed in a long time before this job🤙🏼

[@DarkManagerful]

@@Mechani_Cole thank you

[@MrSalazar33]

Great video!

[@Mechani_Cole]

Thank you, much appreciated!

[@Clipzz323]

Hello!! Where’s is the thermostat located at?

[@Mechani_Cole]

Right inside the thermostat housing

[@fancy8365]

Hey what part of the country do you live? Have you been working on Vws along time. Love your channel. Your funny. I already replaced my thermostat, waTer pump, cool fans and ac hoses. Haha I hope they did the sensor when they put fan in but I doubt it. I guess I get to do that now myself. Because I can't trust anyone around here to even put the manifold back on right. My car is still leaking coolant. I been refilling it every two weeks and start sweating if I am getting anything out trunk with car on. It feels so hot by exhaust. I guess I'll try the flange next. I love youtube. I understand my car now as good as some non mechanic men and keeps me from getting ripped off anywhere now. I have to put the stupid battery connections together tomorrow. My computer seems cray cray after battery got jumped. I pray it fixes some shit. Anyway I am waiting to see if I'm rich or with good credit by the time the electric vw bus comes out in USA. I love all the videos and pics of it. Especially the buzz. Of course I wish I could remodel the old vws but they cost alot to keep up and Renovate and not always reliable or emission friendly. Unfortunately the old ones they are cop magnets when your in Bumfuck nowhere but I would love one still. Even traveling the country in my Chevy venture was like I had arrest me on my plates. Which i thought it looked like a 2001 mom van. With the vhs feature i thought it screamed luxury and class. They didn't like it one bit though. I would probably still be in prison if the stupid thing didn't have so many tire issues and eat rack and pinions. Hopefully once I get my buzz I'll have better luck haha if I get it

[@Mechani_Cole]

Thanks for watching! Located in WA state🤙🏼

[@fancy8365]

@@Mechani_Cole haha made the drive there before from GA. Don't think my car is in shape to be tackling that. Lol I think it's the ignition switch now or the wires to it. I haven't gotten to the coolant issue because the electronics

[@HardWhereHero]

The plastic clamps on VWs are all going to break even if you use the right tool. Every time you disconnect and break something you have to come up with a new creative way to keep it in place because the plastic snap broke off the end. Always happens with VW.

[@Mechani_Cole]

Not always the case. After a few years you learn how to keep even the most fragile clips together when removing😁

[@jacobwheeler3368]

What did you do to keep the temp sensor in. That clip is a pain in the a** I broke 3 trying to get it in and still can't. I found metal to hold it for now but not the best

[@Mechani_Cole]

It goes in different then you think it does. Look up a pic on Google it may help, I struggle as well. Once you figure out how it goes then they pop right in

[@josephmbmorales]

My turn next , 👍

[@5er593]

You dont wana do this on this engine when is inline orientation

[@Mechani_Cole]

I do alot of them🫡

[@5er593]

@@Mechani_Cole engine out?

[@Mechani_Cole]

@5er593 no

[@5er593]

@@Mechani_Cole i just removed from a4 b7 1.9tdi had to tilt engine and alot more...

[@HardWhereHero]

Dude I'm fucking shocked that your buddy still has the pull rod on his oil dipstick. On every 1.8 and 2.0 Jetta or golf I've ever worked on that's the first freaking thing that breaks.

[@Mechani_Cole]

The A4 I just picked up has it broken as well, just had to order a new one