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Mercedes S500 - W140 && S500 W220.
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821 Posts
Discussion Starter #1
Good Morning Gentlemen,

It seems the 220's PSE pump is end of life,

I opened up the PSE pump, the motor is fine, ( no burning, and runs smooth ).

The impeller however is worn out; thus the low pressure.

Upon searching, I found a British Website, selling just the impeller, and claiming their products are better than the OEM.

I wanted to know, the forum's verdict on this case.

Has anyone used this ? This will be more than 100 USD.

what are the results ?

Thanks and best regards.

2612614
 

W220 Moderator
Joined
6,028 Posts
I often find it is the actual Electric Motor that causes the grief, ;)
 

Registered
2005 S600
Joined
518 Posts
A new PSE pump is about $500, so, if I had mine apart and KNEW it was the impeller, then I would spend the $100 to find out...

Sometimes this approach works, sometimes, it doesn't.

I spent about $12 in o-rings, disassembled, cleaned and reassembled my valve blocks, and they've been fine ever since. So, you can successfully rebuild/repair a component, if the diagnosis is correct.

Please keep us posted on what you choose and the results.
 

Registered
W219 320CDI -07 W220 320CDI -01 W210 270CDI -01 EX: W211 320CDI -04
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1,003 Posts
I bought airmatic compressor repair kit from x8r, yes they claim to be better than oem lol...

My PSE pump I bought 2nd handed, about 200鈧
 

W220 Moderator
Joined
6,028 Posts
A new PSE pump is about $500, so, if I had mine apart and KNEW it was the impeller, then I would spend the $100 to find out...
Yeah, sorry I wasn't trying to suggest a new PSE complete, the Mabuchi Electric Motors are available new from time to time on Fleabay, not that dear either, fixed one of mine a treat ;)

HTH,
 

Registered
Mercedes S500 - W140 && S500 W220.
Joined
821 Posts
Discussion Starter #6
Thank you very much Gentlemen for the information.

So, logically I should be looking for another unit, and just it get it over with.
However since I am bored, I will try purchasing the motor and try to get around the problem.

The actuator in the boot has a leak, I would ideally want to fix that before moving forward; and the wiring harness going from the car to the boot is also broken.
Let me see where I can find the two parts.

Will keep posted.
Best Regards.
 

Registered
Mercedes S500 - W140 && S500 W220.
Joined
821 Posts
Discussion Starter #8

W220 Moderator
Joined
6,028 Posts
:ROFLMAO: I just fit new MB Parts rather than Chinesium, it is cheaper and far less hassle in the long run ;)
 
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