Volkswagen ALH TDI vacuum pump oil leak fix

[@nominalvelocity]

Great tip on the 10mm socket. I'll be trying that out. I cursed so many German engineers once again when I encountered that little **** nut. I swear if I'm ever in Wolfsburg and find one of them in a dark alley... Gonna be trouble!

[@kylecampeau-qg7vg]

A swivel socket adaptor would’ve worked easier. But I like the creativity!

[@Corysdiyauto]

I know, I didn't have one so I needed to improvise. Thank you!

[@RKXTECHcom]

Great tutorial thank you for posting it up! I am glad our kit worked out for you.

[@Corysdiyauto]

RKXTECH.com - Thank you and I am very happy with the kit.

[@TheBlankenman]

Awesome video Cory. I just got finished replacing my injection pump and needed to figure out the bracket went back on the vacuum pump and duh you just showed me and also showed me how to change both seals. Thanks

[@Corysdiyauto]

tom b - Thank you! Glad the video helped you.

[@petrovanwyk6066]

Thanx Corry. You helped us with this great video.

[@Corysdiyauto]

Thanks for the comment. You're welcome.

[@fernandop.3883]

perfect presentation!

[@Corysdiyauto]

Thank you!

[@Davran2742]

Fantastic vid, thanks.

[@Balajis_Mart]

I could sense vacuum leak when the brakes are applied. There is a hissing sound. Also, the CEL comes up with errors P3130(N18) and P3105(N239). I found traces of oil in the main hose connected to the nipple of vacuum pump. Can replacing the seals fix the issue? The nipple shakes very lightly. Is that an issue?

[@Balajis_Mart]

@@revvmat Yes

[@shamskl3245]

Awesome Great job

[@Corysdiyauto]

Thank you

[@mrsamopus]

Hey! You did awesome job with this video! Does this seals kit solved the problem with the leak?

[@Corysdiyauto]

MrSam - Thank you! Yes, the leak is gone. Problem solved!

[@brokenlowridervw]

Would this fix any brake problems I'm having? I only have the new gaskets

[@Corysdiyauto]

I don't know? It depends on your brake problems.

[@Corysdiyauto]

@@brokenlowridervw - Well, there's a lot to check there. Make sure that there aren't any cracks in the brake booster line and be sure that you have all of the vacuum lines hooked up correctly. The leaking vacuum pump needs addressed too. It's not that bad of a job either.

[@brokenlowridervw]

@Cory's DIY Auto Thanks so much! Great video.

[@Corysdiyauto]

@@brokenlowridervw Thank you! Good luck with everything.

[@chrislareau8110]

Thanks for the great video!

[@Corysdiyauto]

Chris Lareau - Thank you!

[@levski1914fann]

Hey , are you sure that the pump should not be filled with oil? Because when I opened my pump, it was hapf filled with oil and I checked that the oil makes good vacuum in the lower engine speed

[@Corysdiyauto]

Stiliyan Bozhilov - There might be some oil residue, but the pump shouldn't be filled with oil on the vacuum side. If it is, the pump is definitely worn out. If your brake booster line has oil in it, then that's a bad sign.

[@mariusstelu6799]

Corey, i mk4 golf has a problem with brake system, i belive is the boost system because when i stop the motor i cand hear a sound from there...also my vacum out put pipe(aluminium) is weak. So i dont know where the problem is, vacum pump or booster system?can you help me?

[@Corysdiyauto]

Marius Stelu - I would be surprised if your vacuum pump is bad. I would guess that your boost system might have a leak. Try looking for a cracked hose.

[@mariusstelu6799]

I will check

[@AnthonyJones-hk3ie]

That vacuum hose you had to disconnect before removing the large vacuum hose on the brake booster, where does the other end of it go? I’m going to soon replace all of mine within a few days due to 4 of my hoses missing but I’m not sure where that one goes, the reservoir, and the actuator. I’ve looked at diagrams but for some reason it isn’t clicking 😅

[@Corysdiyauto]

Anthony Jones - That vacuum line runs from the reservoir towards the firewall and connects to a plastic "T" connector. The connection happens right below the passenger wiper arm pivot point. I hope that helps you.

[@AnthonyJones-hk3ie]

Absolutely!! Thank you I and highly appreciate it!

[@Krzychukrk]

Hi! I know my comment is not related to the subject of this video but maybe you know this... Is there a second oil pressure switch (sensor) in ALH (0.9 bar)? I know there is one just below the oil filter, but can't locate the other one!

[@Corysdiyauto]

Krzychu - There's only one oil pressure sensor to my knowledge.

[@Krzychukrk]

@@Corysdiyauto Thanks for your swift reply! I was told so and I found there is a different type of a sensor, also 1 pin but different plug www.google.com/imgres?imgurl=https%3A%2F%2Fcdn.motordoctor.de%2Fuploads%2F360_photos%2F2472800%2Fpreview.jpg&imgrefurl=https%3A%2F%2Fwww.motor-doctor.co.uk%2Foil-pressure-sender%2Fvw%2Fgolf%2Fgolf-iv-variant-1j5%2F11606-1-9-tdi&tbnid=T0skaaZpbzKjeM&vet=12ahUKEwijjcC9koHxAhXKyCoKHb1CBfkQMygCegQIARBc..i&docid=j0pMBRzP8AguiM&w=650&h=582&itg=1&q=1.9%20tdi%20alh%20oil%20pressure%20switch%200%2C9&ved=2ahUKEwijjcC9koHxAhXKyCoKHb1CBfkQMygCegQIARBc

[@brokenlowridervw]

What did you use to get it so clean?

[@Corysdiyauto]

I believe that I just wiped it out with a lint free cloth. I don't remember spraying it with anything.

[@DD-uy3gn]

Can I clean it with brake cleaner?

[@Corysdiyauto]

You should avoid using it on rubber and plastic areas. I would use it to clean the pump itself once removed from the vehicle.

[@W-Will53]

What did you use to clean the surfaces? Brake cleaner?

[@Corysdiyauto]

Will Webster - I just used a clean lint free rag and it worked well.

[@xdrabbit]

Hi Cory. Great job on on your video! I'm doing the same job. The reason I'm doing it is that i experienced a stiff brake pedal for a while then limp mode. The turbo was not kicking in. When I opened the vacuum pump it had quite a bit of oil in it. Is it supposed to have oil in the pump? I imagine replacing the seals will help with that.

[@Corysdiyauto]

Tom Ashby - Thank you! The pump shouldn't have oil in it. Check to see if the vacuum line that goes to the brake booster has oil in it. If it does, then it's not a good sign. You might have a bad pump.

[@xdrabbit]

@@Corysdiyauto I'm seeing signs of oil in the throttle body and intercooler. There was a little oil in the line to the brake booster. All the parts in the vacuum pump are intact and move freely. Would bad vacuum pump seals explain the presence of oil in the throttle body?

[@Corysdiyauto]

Tom Ashby - Throttle body? Diesels don't have throttle bodies, unless you don't have a TDI. Those seals prevent external leaks on the vacuum pump. It's normal to have a light coating of oil inside the intercooler piping. If you have major amounts of oil in there, then your turbo is probably worn out. How many miles are on your engine?

[@xdrabbit]

​@@Corysdiyauto You're right it's not a throttle body. Air intake manifold has a control flap mechanism, its that. I was noticing oil leaking through where that connects to the intake manifold. Seems like there shouldn't be oil there either. Car is nearing 150K miles. I had to replace the turbo at 95K and it's been working great until a week ago. I know the turbo actuator is on the vacuum system so fingers crossed I'm counting on the vacuum pump fix, fixing the turbo. Thanks again. Great video.

[@Corysdiyauto]

@@xdrabbit - I'm still on my original turbo at 170,000 miles. I'm surprised that yours failed at 95k!?

[@mohammedzarifkhan8080]

Hi do you have to buy the seals from vw?

[@Corysdiyauto]

Mohammed Zarif - No you don't have to. I have a link up in the description for Amazon so you can get them there if you want?

[@Magnificafoto]

On 2:45 where does vacuum line connect to on the other side?

[@Corysdiyauto]

Albert Rivera Lozoya - That line goes to a plastic "T" connection.

[@taushrahimi2656]

Prefekt

[@AnoniMArtShowPhotography]

if that vacuum pump leaks oil , the car drives diferenly ? Ohh and you sould replace the vacuum hoses too ...

[@Corysdiyauto]

Victor Nenciu - My car didn't drive differently when the pump was leaking. I replaced a vacuum hose that went to the brake booster because it was cracked. You should always check the vacuum hoses for any cracks. They get brittle with age.