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  #1  
Old 02-06-2008, 09:06 PM
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Water Pump

I have an 01 X5 4.4 with a waterpump issue. When i bought the car about 8 months ago with 45000 miles it had a new waterpump. 6 months later the pump is leaking from the gasket. Had the gasket replaced about 6weeks ago and now its leaking again. Are there any known issues with this.

Thanks.........Bill
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  #2  
Old 02-06-2008, 11:57 PM
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Since you didn't specify where your leak is occurring on your water pump, if it's leaking from the gasket area at the rear, or the thermostat area, the gasket probably wasn't coated with water-based lubricant during installation. If this step is skipped on either gasket, if the gasket were nicked or misaligned during in the install, it will result in a water leak.

If the water leak is from the shaft, then the pump is defective. Is it OEM?

If your leak is from the hose area, then there are several reasons for this, but basically due to a bad seal, have the hose and the mating metal spout checked . . . . .
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Old 02-07-2008, 08:00 PM
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original BMW(not just X5s) water pumps typically fail between 60,000-80,000 miles - due to plastic vanes - some last 150,000+, some less than 50,000 - if you are taking it apart, then change the pump & thermostat (& gaskets) - it is less expensive to do it all at once - how are the belts??? - I had them done the same time
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Old 02-14-2008, 09:16 AM
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replaced mine at 81,000 miles but make shure you dont nick the gasket and take time in cleaning the surfaces completely ! Also you might want to check the two metal pipes that attatch into the back of engine are secure as if not it will leak and appear to come from gasket as this is were it runs to.
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Old 02-14-2008, 12:51 PM
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on the E36 and 4.4 waterpumps I install the gasket dry. no RTV, sealant, etc.

maybe a dab of adhesive if it's prone to falling off.
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Old 05-27-2008, 10:32 PM
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Is there any links for a DIY on a 4.4L x5 water pump
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Old 05-27-2008, 11:12 PM
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I will be submitting an article about this soon.
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Old 05-27-2008, 11:15 PM
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Quote:
Originally Posted by Bimmer360
I will be submitting an article about this soon.
That'll be great. Thanks in advance, Bimmer360
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Old 05-27-2008, 11:24 PM
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^^ sure, you guys are welcome. Just bear with me, just been busy all week.
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Old 05-28-2008, 10:06 AM
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ok guys, so i finished the DIY. Here it is: http://www.xoutpost.com/x5-e53-forum/...d=1#post475348
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