I have a 2004 C230 Kompressor and after my last visit at the dealership my advisor told me something about the vaccum pump in the back on my engine is leaking, i am sure he was talking about this since there should be only one. He gave me an estimate for 500 bux which is ridiculous obviously after seeing this thread. Anyways even though this thread is for an 05, i could possible use this to replace my vacuum pump on my 2004 right???
Very helpful! Thanks!
I once went on a test drive in an SLS AMG. That was the moment i realized the importance of education =p.
It should fit. The only difference afaik is the gasket that holds the pump against the engine. There's a newer part but I just bought the old version. Buy all 3 gaskets, and replace for about $20 total. Your pump is probably still good.
I'm not sure if you're mixing up 2 problems with these engines. There are 2 known issues.
a) Vacuum (hose) leak - causes engine to stutter. Search this forum for "$12 hose replacement". (I started the thread )
b) Vacuum pump leak - car runs fine, but engine oil drips all over the back of the engine and transmission. I'm in the process of getting this one fixed. Waiting for parts to arrive.
Stutter when in gear at idle, at a red light? Thats what my c240 is doing. Is it my hose I just need to fix?
I do not have much experience fixing my own car (it's been about 15 years since I changed an alternator in an Audi). Had to go out and buy a few sets of tools. My biggest problem was the ratchets would not fit in that tight space between the engine and the carpet-like stuff. Bought the torx E10, and a really flat ratchet. I ended up going simple and using an 8mm wrench, and that worked.
The plug on the pump did not come off very easily. Whomever had taken it off before jacked it up, and it the plastic part is broken. I am unsure what that part is called, but I would like to replace it.
Well, after waiting for the seals/gaskets to arrive in the mail, I decided to give this DIY a try this afternoon. I must admit I was a little intimidated. To help calm my fears, I spent the last week reading other's posts on this fix and filling in a few gaps in my tool box. I felt comfortable I had everything needed and more (got my eyes on some other DIY threads), so I set out to replace the seals....hoping I can get away with a less expensive fix....for I replaced my pump less than two years ago.
Like some other people have mentioned, once I found the bolts and addressed which angles to use to get proper leverage, I managed to remove the unit without much effort. Was clearance tight...you bet but patience is the key.
Once removed, I cleaned the exterior of the pump, carefully removed the five torx screws and cleaned the inside of the pump, which was filled with oil. Was the interior seal the issue....I'm not sure but I can tell you the seal was a powder blue color and compressed to the point where it appeared to be the issue. Time will well. I replaced it with the ProLine oil filter gasket suggested and put everything back together.
Total time to complete the job was about 50 minutes. Total cost: $22.79
For the record, I am a mechanically inclined person but in the past considered my Mercedes off limits to DIY type work even though I had nothing to base that on. The stealership and the posts here have helped me challenge that prior thinking. Recently, I fixed a broken interior handle and now this oil leak. Next on the agenda is the $12 hose replacement (next weekend). Thanks to the thread starter/community for sharing.
First I want to thank everyone involved in this write up.
I rebuilt mine today veryeasy and quick job ( if it goes again I will get a pump ).
The issues I had were the car would get a low vibration / rumble with the A/C on
and the car in gear, it would disapear in park or with the A/C off.
I first thought the A/C compressor might be going bad but found this thread and
thought I would try this ( the cheapest / quickest ) fix.
After the rebuild I started the car and thought it was still the same, however after driving it home the low rumble noise was almost completely gone.
My guess is there is still some oil blockage in the airways making not go away instantly.
I hope this helps someone as much as it has helped me.
Anyways heres some oily pics I took with the pump out and apart.
Here you go pump to camshaft housing# 271 238 01 80 and pump gasket# 6689970145.
I got these through autohausAZ and came out to $11.28 with shipping.
I purchased the Hyudai oil filter that came with the large o-ring but it didnt fit
so I reused the old one which appeared to be in good shape.
Also on a side note the large o-ring is not on the oil side and has nothing to do with
oil in the pump.
Well there is still some noise when at idle, which could be some oil left in the system
or it just needs A new pump all together. I did order the replacment hose kit which can also cause idle issues. I will pull the pump ou next week nd check for oil and go from there.
I'll be rebuilding the old vacuum pump this weekend if I can get the parts together by then.
Two questions, is oil supposed to be inside the vacuum pump? Is this how we know it's "leaking"? And finally, is there a way to know the leak has been fixed without physically inspecting the pump? I only know about this leak from having a mechanic check it out so I wouldn't know what to look for.