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C63 pump noise?

Discussion in 'AMG' started by Jonathan Schofield, Jun 2, 2018.

  1. Jonathan Schofield

    Jonathan Schofield Member

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    Your Mercedes:
    C63 W204 2008
    I have been enjoying my C63 Estate for 10 months now, having covered nearly 15000 miles and accumulating a lot of Shell points (and a speed awareness course!) Most has been motorway miles and the average mpg is over 22 on those runs dropping to 16 if on a short trip to town. I have 2 rules, don't start the car just to move it a short distance and never exceed 2000 rpm until the oil is up to temp.

    So far I've changed the gearbox oil and engine oil and filters, replaced two rear tyres and had new disks up front (ouch!) and a nsf wheel bearing. Richard Hollings of York has done the work and I can't recommend them too highly. IMG_1712.jpg

    However, I have a question that Richard couldn't answer:
    After the car has started from cold and the temperature has risen above 60 the first time that the vehicle stops (at a junction or lights for example) there is the sound of a high pressure pump that runs for around 30 seconds rising in intensity after the first 15 seconds. The sound is similar to the sound an aircraft makes when it is lowering its landing gear and it only happens once per journey. Occasionally I can travel perhaps 60 miles or more without stopping and then there it is, the one off sound of a high pressure pump. I'd love to know what it is.

    Here's a picture of my car kissing my wifes car...
    IMG_1729.jpg
     
    AMGeed likes this.
  2. Uncle Benz

    Uncle Benz Senior Member

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    Your Mercedes:
    Mainly Mercedes
    Secondary air pump?
     
  3. OP
    Jonathan Schofield

    Jonathan Schofield Member

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    I don't know, is there a secondary air pump and what is it for? I would guess that the noise comes from the NSR, under the back seat, but I'm not sure. It does only come on once in any given journey. Also when I stop and I set off before it has finished then it will continue at the next stop.
     
  4. alexanderfoti

    alexanderfoti Moderator

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    Your Mercedes:
    W221 S65 AMG - W204 C63 AMG
    Yes, secondary air pump comes on when driving in slow traffic just after cold startup.

    It comes on and off and also appears to change in pitch.

    Although it certainly won't come on after 60 miles, unless the relay is sticking. I think its more likely you are hearing the oil cooler fan, which is very loud.
     
  5. OP
    Jonathan Schofield

    Jonathan Schofield Member

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    Alexander, thanks for the reply, what is this pump for?
    I don't think I have heard the oil cooler fan, and this happens after the first stop whether up to temp or not and only the once (unless interrupted).
     
  6. alexanderfoti

    alexanderfoti Moderator

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    In that case, its not the oil cooler fan.

    Without hearing it, I can't say what it is. Sounds like the secondary air pump, but that won't run at the end of a 60 mile run.
     
  7. John Laidlaw

    John Laidlaw Senior Member

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    W212 E63 ///AMG V8 Biturbo Volvo XC90 2018
    Does your car have Air matic , being an estate?
     
  8. alexanderfoti

    alexanderfoti Moderator

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    Its an option on the 204, not sure if available with the C63 estate but I think that would be the most likely thing.
     
    John Laidlaw likes this.
  9. OP
    Jonathan Schofield

    Jonathan Schofield Member

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    As far as I know it doesn't have AirMatic, it's a mystery noise but I'm not losing sleep over it.
    Thanks one & all for your help.
    Jonathan
     
  10. alexanderfoti

    alexanderfoti Moderator

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    If you PM your VIN number I can tell you if its the self levelling rear suspension.
     
  11. OP
    Jonathan Schofield

    Jonathan Schofield Member

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    C63 W204 2008
    Alexander

    I had this done for me on a different thread a little while ago, I can't see the required part number:

    Main data
    Parameter Value
    Ident. number (FIN) WDD2042772F166081
    VIN WDD2042772F166081
    Baumuster 204277
    Sales name C 63 AMG

    Order number 0 8 537 17611 (Destination: Great Britain)
    Delivery date 25 04 2008
    PAINT1 775U BRIGHT SILVER METALLIC CLEAR COAT PAINT
    Interior color 201A LEATHER - BLACK/ANTHRACITE
    Engine 156985 60 027536
    Gearbox 722907 01 751673
    General data for model code 204277

    Parameter Value
    200A LEATHER
    201A LEATHER - BLACK/ANTHRACITE
    205B OWNERS MANUAL AND SERVICE RECORD - ENGLISH
    220 PARKTRONIC SYSTEM (PTS)
    241 FRONT SEAT LH ELECTRIC ADJUSTABLE WITH MEMORY
    249 INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING
    250B MOBILO LIFE/EUROPE SERVICE PACKAGE
    265 LINES-NO.PLATE DISCONTINUED
    275 MEMORY PACKAGE (DRIVER SEAT, STRG. COL., MIRROR)
    283B AIRBAGLABLE - ENGLISH
    287 THROUGH-LOADING FEATURE
    293 SIDEBAG IN REAR LEFT AND RIGHT
    294 KNEE AIRBAG
    297 ELECTRIC ROLLER SUN BLINDS IN REAR DOOR LH AND RH
    299 PRESAFE
    305B HEAD UNIT LANGUAGE - BRITISH ENGLISH
    310 DUAL CUP HOLDER
    335B INSTRUMENT CLUSTER/HU LANGUAGE - ENGLISH
    345 RAIN SENSOR
    386 UNIVERSAL TELEPHONY PACKAGE
    390 LINGUATRONIC-ENGLICH(BRITISH)
    414 ELECTRIC TILT/SLIDE SUNROOF IN GLASS VERSION
    427 AUTOMATIC TRANSMISSION 7-SPEED
    440 TEMPOMAT (CRUISE CONTROL)
    461 INSTRUMENT WITH MILES IND. AND ENGLISH LEGEND
    477 TIRE PRESSURE LOSS WARNER
    500 OUTSIDE REAR VIEW MIRROR LH AND RH FOLDING
    512 COMAND APS WITH DVD CHANGER
    537 DIGITAL RADIO STANDARD DAB (DIGI. AUDIO BROADC.)
    551 ANTI-THEFT/ANTI-BREAK-IN WARNING SYSTEM
    581 AUTOMATIC CLIMATE CONTROL
    584 ELECTRIC WINDOW REGULATOR
    5XXL EUROPE
    600 HEADLAMPS - CLEANING EQUIPMENT
    619 CORNERING ILLUMINATION
    621 HEADLAMP WITH ILS, LEFT-HAND TRAFFIC
    666 PRODUCT PROT.F.TRANSPORT VEH. W/O TIE-DOWN HOOKS
    682 FIRE EXTINGUISHER
    690 EMERGENCY SPARE TIRE (MINI SPARE)
    739 TRIM PIECES - ALUMINUM
    73V SPEED- + LOADINDEX 94Y XL+95Y XL
    772 AMG STYLING PACKAGE-FRONT SPOILER, SIDE SKIRT
    775U BRIGHT SILVER METALLIC CLEAR COAT PAINT
    776 WHEEL ARCH ENLARGEMENT
    790 18" AMG SPOKED WHEELS WITH MIXED TIRES
    808 AEJ 07/1
    808 *1 156.9__ 20060905 AEJ 07/1
    808 *2 204____ 20050721 AEJ 07/1
    808 *3 722.9__ 20050822 YOM 17/1
    810 PREMIUM SOUND SYSTEM
    817 SIREN BRACKET FOR INCREASED THEFT PROTECTION
    873 SEAT HEATER FOR LEFT AND RIGHT FRONT SEATS
    875 HEATED SCREEN WASH SYSTEM
    882 INTERIOR SAFEGUARD
    885 HIGHTEN THEFT PROTECTION
    890 AUTOMATIC REAR-END DOOR
    954 EQUIPMENT PACKAGE FOR AVANTGARDE VEHICLES
    983 COC PAPER EURO 4 TECHNOLOGY W/O REG. CERT. PART II
    989 IDENTIFICATION LABEL UNDER WINDSHIELD
    A22 NEW CONVERTER GENERATION
    A24 JOINT FLANGE, 4-ARM 120
    A36 TORQUE CONVERTER HOUSING AGA
    A38 M - VALVE BODY ASSEMBLY WITH VGS 2
    A41 SOFTWARE 2
    A44 SOFTWARE 3
    A50 ENGINE BRACKET VARIANT
    F204 MODEL SERIES 204
    G907 TRANSMISSION CODE VERSION 07
    GA AUTOMATIC TRANSMISSION
    HA REAR AXLE
    K11 ADAPTIVE STOP LIGHT FLASHING
    K14 CONTROL CODE FOR SERVICE INTERVAL 20000 KM
    M156 V8 GASOLINE ENGINE M156 - AMG
    M63 6.3 LITER DISPLACEMENT
    NB0 NEW VEHICLE DOCUMENTS: DAIMLER AG
    R RIGHT-HAND STEERING
    R01 SUMMER TIRES
    U01 REAR BELT STATUS INDICATION
    U18 AUTOMATIC CHILD SEAT RECOGNITATION (AKSE)
    U26 FLOOR MATS - AMG
    U37 FOGLAMP
    U72 DVD PLAYER WITH REGIONAL CODE 2, EUROPE, JAPAN
    VL FRONT AXLE HALF, LEFT
    VR FRONT AXLE HALF, RIGHT
    SPRINGS
    Parameter Value
    Front suspension strut A 204 320 68 66 ,
    Front springs A 204 321 42 04 ,
    Rear springs A 204 324 06 04 ,
    Rear shim A 210 325 04 84 ,
    Other information
    Parameter Value
    EU approval date 20071128
    EU approval number e1*2001/116*0457*01
    Additional info for engine
    Parameter Value
    Engine 156985 60 027536
    AGG_VAR A 156 010 12 00
    Variant A 156 010 12 00

    Thanks

    Jonathan
     

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