BlackieAMG

ABC pump is making noise when engine warm and only when driving tho and got a code for intake manifold leaked car was feel like misfire and engine shaking.....what should i do ? 08 cl63 AMG

biker349

have it scanned with a star system.

alx

You have two problems.

The abc pump noise is one. It might mean nothing (plenty of noisy abc pumps going strong) or it might mean your pump is on its way out.

The codes and misfires could be many things. Have the car read to pinpoint which cylinders misfire, what other codes are logged along with the freeze data and take it from there.

BlackieAMG

But there's no check engine light tho it's was flash couple times then off

alx

The check engine light is only for emission related codes. The rest of the codes are logged and the generic ones can be read with an obd 2 scanner. The mb- specific codes are read with das which is what you need to get done.

BlackieAMG

Oh thanks but the car been drive good for the past week or maybe that's what happened when I let the car sit too much and won't drive it like that lol car only have 42k miles on it but seem have so many problem so far

biker349

take your chances driving, or get it properly scanned and find out what's wrong. it's your decision and can be a costly one!

BlackieAMG

Ok thanks and happy new year

NISMO240SSX

I had a similar ABC issues, took it in under warranty.

It was the pulsation dampener for the power steering & ABC system.

Similar Thread: https://mbworld.org/forums/s55-amg-s...-dampener.html

invoice said 480 paters + 2.8 hrs.

BlackieAMG

Thanks maybe that's what it is but the dealer wanted to replace the whole pump tho they said the pump is bad and wanted to replace to pump

BlackieAMG

and do u think dealer would replace just the pulsation dampener but not the whole pump ? cause i dont know any good mechanic here and i dont trust them but dealer lol

leodangelo

If the 'noise' your pump is making is like a super charger whine then I would bet it is your suspension dampers. Mine was doing the same thing and I just had my dampers replaced (got the car back yesterday) and I can confirm that the 'noise' is now gone.

-LeoD

principledchiro

Fried coils

biker349

leo d, by suspension dampers do you mean accumulators?

leodangelo

I was actually referring to the pulsation damper. It is the nitrogen filled damper. Apparently they rupture and cause the ABC pump to work harder than it needs too.

-LeoD

tusabes

Always do all 4 air cells /dampers /acculumators

4 in total- Part for the front and rear accumulators (You need two) is: A220-327-01-15

Be advised there are two other nitrogen spheres in the system as well. One is mounted to the pressure relief valve (Part #A220-327-02-15) which is found in the front right side of the vehicle. This is also known as the pulsation damper.

The other is a small nitrogen chamber (Called an Air Cell) that sits near the fuel pump in the driver side mid/center of the vehicle, (Part #A220-320-04-15).



if yours are original and you need to replace one of these spheres, replace them all as they will all be in roughly the same condition. Over time, it is normal for the nitrogen pressure to reduce due to use/leaks. If one of the rubber internal diagrams have broken, the others may be close as well.