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Water Pump Pulley Rattle


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#1 will_nic

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Posted 15 August 2019 - 06:06 PM

Hi all,

 

I have had a rattle noise coming from the alternator/fan area which has got progressively worse. It now is almost constant and gets louder with RPM. I have investigated this evening and the water pump pulley has a lot of play. The alternator, A/C compressor, and adjustment pulley/bearings all seem to be fine and smooth. 

 

Would this likely be some loose bolts fastening the pulley to the water pump or something worse? What's the easiest way to get to this, take the radiator out?

 

Here is a video to show the rattle:

https://youtu.be/l3ecS2oYSU8

 

 

Thanks,

Will


Edited by will_nic, 15 August 2019 - 06:06 PM.


#2 phillrulz

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Posted 15 August 2019 - 06:12 PM

ID say loose bolts, Rad out or atleast up . 



#3 nicklouse

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Posted 15 August 2019 - 06:14 PM

There are 4 bolts that hold the water pump and fan onto the pump. They well be lose or missing. Fix before driving again or expect a holed rad.

#4 will_nic

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Posted 15 August 2019 - 06:20 PM

Thanks both! 



#5 phillrulz

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Posted 15 August 2019 - 06:36 PM

There are 4 bolts that hold the water pump and fan onto the pump. They well be lose or missing. Fix before driving again or expect a holed rad.

 

by hole you mean 1" gouge right ? haha 



#6 Moke Spider

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Posted 15 August 2019 - 06:41 PM

To gain some extra space in there to work on it, if you undo the bolts on the engine mount where it's bolted up to the subframe, and jack that side of the engine up, it will give you all the room in the world that you need to get to the fan or even take the radiator out.



#7 will_nic

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Posted 15 August 2019 - 06:46 PM

To gain some extra space in there to work on it, if you undo the bolts on the engine mount where it's bolted up to the subframe, and jack that side of the engine up, it will give you all the room in the world that you need to get to the fan or even take the radiator out.

This is great advice. I'll give that a shot as I'd rather not get the radiator out.



#8 cal844

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Posted 15 August 2019 - 06:48 PM

Could be the pump starting to go

#9 will_nic

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Posted 16 August 2019 - 04:48 PM

Yup, that'll do it...

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#10 phillrulz

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Posted 16 August 2019 - 04:54 PM

Yup, that'll do it...

 

Well then.... maybe your belt was too tight? and its stressed over the years. 



#11 will_nic

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Posted 16 August 2019 - 05:07 PM

 

Yup, that'll do it...

 

Well then.... maybe your belt was too tight? and its stressed over the years. 

 

 

Yeah I guess so... I havent had the car that long. Totally possible the belt was too tight.



#12 Ethel

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Posted 16 August 2019 - 07:06 PM

Looks like it might have started as corrosion. I was going to suggest you check the centre hole  hasn't worn on the pump boss if it was loose. Don't think that's necessary  :blink:, but maybe check for wear on the pump boss against your new pulley.

 

If you're not aware there's a variety of pulley diameters and they're not all interchangeable.



#13 smurfomatic

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Posted 16 August 2019 - 08:36 PM

Ouch! Replace the water pump while you're at it, who knows what damage that will have done to the bearings



#14 will_nic

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Posted 17 August 2019 - 10:50 AM

Looks like it might have started as corrosion. I was going to suggest you check the centre hole  hasn't worn on the pump boss if it was loose. Don't think that's necessary  :blink:, but maybe check for wear on the pump boss against your new pulley.

 

If you're not aware there's a variety of pulley diameters and they're not all interchangeable.

 

Thanks. I'll have to check that when I put the new pulley on. I have just bought an identical replacement. I see there is a range of diameters but thought its best to keep with what I've got.

 

Thanks



#15 will_nic

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Posted 17 August 2019 - 10:51 AM

Ouch! Replace the water pump while you're at it, who knows what damage that will have done to the bearings

 

I did check the play in the water pump and all seems ok for now. It is a low milage vehicle so for now should be ok.






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