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Pump problems A Class 140 ?

baileymonet

New Member
Joined
Apr 16, 2008
Messages
3
Hi I have an A Class (O4) and the past couple of days a new noise has started (sounds like a hoover) when I start the car. It lasts for about 15 seconds gets a faster sound and then turns off. During my 20 min journey to work it has come on a couple of times when I have stopped at junctions.

The noise comes from a part on the right hand side of the engine looking in and has the code A000 140 4085. I looked up on the mercedes parts and it says it is a pump. Which one I do not know.

Can anyone tell me what this could be? I am excellent at making sponge cakes but know nothing about cars!

ps I hope this is the sort of thing this forum helps with, if not then sorry!

Nicole
 
sadly I don't know either but I'm sure that someone will.

I'm know that a sponge cake will be suitable reward for a cure!
 
Hi, many thx for the reply. I have just rang a Mercedez dealership who said that it is a AIR PUMP as you said, price £480.00! The car is a petrol engine. Is this something we can change ourselves? Thx again Nicole
 
It is noisey in normal operation. Get a specialist or MB tech to look at it and listen.
 
Hi, thank you for your messages....sorted out the problem it was the secondary air pump, managed to buy a second hand one (£88.00) and husband fitted it and it all works ok! Looks like I need to bake him a special sponge cake!
 

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