Water Pump Life

L84THSKY · 10-14-2008, 12:11 AM

I'm curious, how long has your original water pump lasted? Please post mileage.

My car is on it's original water pump, just about to hit 100,000 miles any day now.

**1996 328ti** · 10-14-2008, 12:37 AM

Don't know how different my pump is, but it has +240,000 miles on it.

tiFreak · 10-14-2008, 01:52 AM

my car has 128k on it right now, AFAIK it's the original pump

elchicano · 10-14-2008, 01:54 AM

154,000 still has the original.

adamud · 10-14-2008, 04:38 PM

I bought my car with 161k on it and the thermo wasn't opening up. It was replaced immediately after I picked it up

**1996 328ti** · 07-22-2009, 09:02 PM

{bump}
Worth bumping with so many people claiming high failure rates.

**cooljess76** · 07-22-2009, 09:43 PM

I don't think it's so much the pump itself failing as it is the bearing failing. A while back, there was a big concern about the plastic impellar failing so it was replaced with a metal impellar, but honestly, I've never seen or heard of a plastic impellar breaking. I mean, I've heard people talk about it, but I've never seen an actual account of it happening. A while back my engine developed a chirp. I located it to be coming from the alternator belt tensioner. I noticed that I can replicate the chirp by compressing the tensioner by hand via pressing down on the belt itself. I could be wrong, but I think BMW designed the tensioner to chirp as a warning signal that something is problematic within the belt drive system. Long story short, it turned out I had a faulty water pump bearing. Replaced the water pump, chirp went away.

**1996 328ti** · 07-22-2009, 09:53 PM

I think the ti always had a metal impeller.
I have 234K on my pump.

**cooljess76** · 07-22-2009, 10:13 PM

Quote:

Originally Posted by 1996 328ti

Don't know how different my pump is, but it has +240,000 miles on it.

Quote:

Originally Posted by 1996 328ti

I think the ti always had a metal impeller.
I have 234K on my pump.

I think you need to start driving your Ti more Steven. You've went -6k miles in the past 9 months

Xenocide · 07-22-2009, 11:52 PM

I think mine died around 140k. Bearing failure.

**1996 328ti** · 07-22-2009, 11:57 PM

Quote:

Originally Posted by cooljess76

I think you need to start driving your Ti more Steven. You've went -6k miles in the past 9 months

I haven't been driving it much. Work is very close and on weekends I drive the Mini.
Besides, I don't want anyone to hit me.

tiFreak · 07-23-2009, 12:08 AM

have you been driving it in reverse?

MPWR · 07-23-2009, 12:51 AM

Quote:

Originally Posted by 1996 328ti

I think the ti always had a metal impeller.

I pulled a plastic impeller water pump out of our 97. I have no reason to believe it wasn't the factory original.

I don't really see why you wouldn't replace the pump regularly- at least every 100k or so. The bearings to wear out, and a failure can be catastrophic. Pumps are cheaper than head gaskets, and much easier to change.

**1996 328ti** · 07-23-2009, 01:49 AM

Quote:

Originally Posted by MPWR

I pulled a plastic impeller water pump out of our 97. I have no reason to believe it wasn't the factory original.

I thought only the M52/S52 motors had plastic.

Xenocide · 07-23-2009, 01:52 AM

Quote:

Originally Posted by 1996 328ti

I thought only the M52/S52 motors had plastic.

I think your right, but if a M50/42 had a water pump early in life could have been replaced with a plastic one.

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