Replacing leaking/broken parts-brake vacuum, coolant flange, clock spring

I need to replace some parts on my 03, namely the coolant flange, brake vacuum (pump?), and the clock spring. My car does not have ESP, so luckily its the cheap clock spring. As for the other parts, I know the part number for the brake vacuum (I think its a pump-its the large silver round thing above the coolant flange), and the coolant flange below the brake vacuum thingy.

Does anyone know the proper flange number for my car? It appears to have a sensor on the backside. The brake vacuum (pump?) has a leak and that has caused the flange to become brittle and develop a leak. So, its going to be replaced.

Here's the brake vacuum (pump?):

https://photos.app.goo.gl/rra2R0a8W71a2UyD3

Here's the flange:

https://photos.app.goo.gl/WQ8XL7mSx5ZYDVhs7

Here's a video looking at it:

https://photos.app.goo.gl/m6fHfAjPIXd3n3py2

I appreciate any help. I've been struggling with this car recently and have resorted to my Jeep Cherokee for my Daily Driving (17mpg!!! )

Did you check https://www.idparts.com/ ??
I have bought stuff from them, they are a trusted vender.

The vacuum pump may only need seals.
The picture sorta looks like it any way.
The vacuum nipple on it is loose on all of them.
Some clean it and use silicon, epoxy, and/or carefully peening the edge to tighten it.

The hard vacuum line to the brake booster is known to crack where it's not easy to see.

wonneber said:

Did you check https://www.idparts.com/ ??
I have bought stuff from them, they are a trusted vender.

The vacuum pump may only need seals.
The picture sorta looks like it any way.
The vacuum nipple on it is loose on all of them.
Some clean it and use silicon, epoxy, and/or carefully peening the edge to tighten it.

The hard vacuum line to the brake booster is known to crack where it's not easy to see.

Click to expand...

I'll give it a shot. A new one is $200+ and a gasket kit is $25...

Is there a way to tell the part number for the coolant flange without taking it off? I plan on doing all the repairs at once and don't want to get stuff disassembled and have time pass and lose them .

Thank you for the help and reply.

ETA: Just checked that link and it looks like they sell the rebuild kit for $3!

https://www.idparts.com/vacuum-pump-seal-a4-alh-p-1199.html

Generally if you're looking for part numbers you need some basic information...year, make, model, engine and transmission does the job most times.

You're listing "TDI's" in your info, so guessing it's a TDI...I didn't see any glow plugs on your coolant flange, so I'm supposing you have an automatic transmission...

Coolant flange for an automatic... https://www.idparts.com/coolant-flange-for-cylinder-head-a4-auto-p-1127.html

Depending upon "known" condition of the coolant and cooling system in general... and if funds can be made available...would suggest changing the coolant, thermostat, it's housing (or at least the o-ring gasket) and any hoses that are at all questionable while you have the system drained.

The temperature sensor in the coolant flange also seems to have a reputation for failing...


JM .02

Al

I guess my info is lacking.

Its an '03 automatic. I recently changed the coolant, the thermostat, and the thermostat housing. I think I did the temp sensor too...but can't remember.

I found the proper flange on Rock Auto for $6. The ID Parts wants $13 to ship the vacuum pump gasket, so I'm not going to mess with them. Thank you for confirming the proper part.

I ended up buying parts on eBay and Amazon. Total spent $50ish. The flange doesn't need a glow plug heater as the transmission is an automatic.

Good luck with parts from those 2. Sometimes they work, sometimes not.

Well, for the cost of them, its worth the "risk". The vacuum pump is guaranteed for a year. New they're $200...so I'm willing to make do. The flange is the same one from Rock Auto, I just had a big order on Amazon and was guaranteed to receive it quicker.

Is there anything special I need to know about the vacuum pump when I install it? I'm guessing it is relatively straight forward.

I am also going to do my fuel filter since I've had it for 70K miles and never done it. Is there anything else I should replace on it that is generally considered routine maintenance? I had the timing belt and water pump done at about 100K miles.

sizzlin bacon said:

Is there anything special I need to know about the vacuum pump when I install it? I'm guessing it is relatively straight forward.
I am also going to do my fuel filter since I've had it for 70K miles and never done it. Is there anything else I should replace on it that is generally considered routine maintenance? I had the timing belt and water pump done at about 100K miles.

Click to expand...

Inspect the snow screen if you never have, change the cabin and air filter every
20k miles, pull off the hose going into the EGR to check on carbon build-up, check
the fuse connections on top of the battery - they can distort from heat over time.
I assume you will be replacing any old vacuum hoses if you haven't already, etc.