Coolant Pump shaking....?

uzi67 · 05-06-2012, 05:18 PM

So I noticed a weird sound coming from my engine, so I popped the hood while it was running. And noticed there was a pulley that had the v belt that goes around all the other ones, and it was wobbling and shaking. It makes a pretty significant sound while driving, so I hopped on the forums and found a very helpful diagram which let me pinpoint the correct one. It seems to be the coolant pump. Now my question is, what could cause it to do this, and is it something major that needs to be looked at right away? Last night on my way home i had the coolant light come on saying to top it up, which I did.

I'm going to add the picture, but you can find it in this post and it is number 8 on the diagram.

http://m.mbworld.org/forums/showthread.php?t=290829

If someone could let me know whether or not its safe to drive it, I have to be hitting the road in an hour

And if there is a diy or quick fix to it, thats always good on the wallet :P

Thanks guys.

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320 dreamer · 05-06-2012, 05:51 PM

if the pulley is wobbling its best NOT to drive it. the pulley could seize come off causing way more damage then the cost of the pulley (about 40$)

uzi67 · 05-06-2012, 06:08 PM

Forgot to add:

I had checked the 4 bolts that hold it on and they are tight. Also, I put my hand under to take a feel, and there was coolant leaked around it... Isn't looking good so far (n) I'm gonna swing it by the shop tomorrow, hopefully it is just the pulley...

uzi67 · 05-07-2012, 06:22 PM

water pump :|

Autotechnica · 05-07-2012, 07:57 PM

I just replaced mine at around 70,000 miles. The wobbling is shaft play on the water pump. There's no cheap fix, you have to replace the water pump. It's around $400-$500 for the part alone depending on where you buy it. I got a Bilstein one. I don't know how much labour would cost as I had mine replaced when I did my needswings ASP pulley kit.

uzi67 · 05-12-2012, 10:41 AM

$780 parts + labour

but she's running again

Zeppelin · 05-12-2012, 01:18 PM

My local auto parts store has new water pumps for $86. Granted not a mercedes OEM part but good enough for me.

uzi67 · 05-12-2012, 08:56 PM

I wish your local parts store was in toronto

all the shops here had no stock of water pumps or they were only about $30 less then MB. oh well you win some you lose some

05-07-2012, 07:57 PM	#5
Autotechnica Senior Member 2002 Mercedes-Benz C-Class Join Date: Aug 2010 Location: Ontario, Canada Posts: 315 Drives: 2002 C32 AMG	I just replaced mine at around 70,000 miles. The wobbling is shaft play on the water pump. There's no cheap fix, you have to replace the water pump. It's around $400-$500 for the part alone depending on where you buy it. I got a Bilstein one. I don't know how much labour would cost as I had mine replaced when I did my needswings ASP pulley kit. __________________ BMWCC Trillium Member 2002 Mercedes C32 AMG - H&R Coilovers, H&R front and rear sway bars, H&R 10mm front spacer, Quaife ATB LSD, EBC redstuff brake pads, Goodridge SS lines, NW CAI, Greddy catch can, custom water/meth injection kit, Johnson CM30 pump, Eurocharged remap, Magnecore wires, NGK laser iridium plugs, NW ASP 178mm Pulley, NW PSK, NW Iso, AEM UEGO wideband AFR, 18" CLK55 wheels, CF front lip, rear spoiler, rear diffuser, custom quad exhaust (cat/res delete)

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05-06-2012, 05:51 PM	#2
320 dreamer MBWorld Fanatic! Garage is empty, add now Join Date: Sep 2008 Location: murfreesboro,tn Posts: 2,829 Drives: 2003 porsche 996 turbo	if the pulley is wobbling its best NOT to drive it. the pulley could seize come off causing way more damage then the cost of the pulley (about 40$)

05-06-2012, 06:08 PM	#3
uzi67 Junior Member Garage is empty, add now Join Date: Mar 2012 Posts: 21 Drives: 2003 C32 AMG	Forgot to add: I had checked the 4 bolts that hold it on and they are tight. Also, I put my hand under to take a feel, and there was coolant leaked around it... Isn't looking good so far (n) I'm gonna swing it by the shop tomorrow, hopefully it is just the pulley...

05-07-2012, 06:22 PM	#4
uzi67 Junior Member Garage is empty, add now Join Date: Mar 2012 Posts: 21 Drives: 2003 C32 AMG	water pump :\|

05-12-2012, 10:41 AM	#6
uzi67 Junior Member Garage is empty, add now Join Date: Mar 2012 Posts: 21 Drives: 2003 C32 AMG	$780 parts + labour but she's running again

05-12-2012, 01:18 PM	#7
Zeppelin MBWorld Fanatic! Garage is empty, add now Join Date: Nov 2001 Location: OC Posts: 1,265 Drives: C32	My local auto parts store has new water pumps for $86. Granted not a mercedes OEM part but good enough for me.

05-12-2012, 08:56 PM	#8
uzi67 Junior Member Garage is empty, add now Join Date: Mar 2012 Posts: 21 Drives: 2003 C32 AMG	I wish your local parts store was in toronto all the shops here had no stock of water pumps or they were only about $30 less then MB. oh well you win some you lose some

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