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Old 03-28-2019, 10:16 AM
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Blown out water pump..

Cruising along 95 north out of Daytona and all of the sudden smoke. Granted this is an X E53 auto with 245K so I wasn't to surprised. However, when I pulled off I inspected the situation to see both belts wound around my water pump stem. The clutch fan connected and hanging loosely. The motor still running. Turned off the motor. Temp gauge still read middle. Oh no, started up again, drove a few hundred feet to get further off highway, temp gauge went up to first rise and the light came on. Turned off motor and coasted. Noticed the climate control unit was out, so I couldn't circumvent the coolant off into the heater core to aid cool down. Question: How do I know if I did any damage to the head/gasket or motor? I already ordered all the parts for a complete build out: thermo,w.pump,clutch fan, belts and new w.pump pulley. If it didn't overheat to top line, should things be ok? I kinda want to keep this beast going as it's been so awesome. Thanks for your assistance. PS. Anyone have suggestion on how to dismantle the broken pump from the clutch fan? Looks complicated.
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Old 03-28-2019, 10:27 AM
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Should be ok as it sounds like your smoke came from the belt becoming a tourniquet and you didn't mention that your coolant blew out. I'd say do a leak down test on your cylinders as the only other thing besides what you're planning.

+ expansion tank (if it wasn't listed)

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Old 03-28-2019, 10:44 AM
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Blown out water pump..

I would agree with EODguy and add that while you’re in there with the water pump you may also want to do a coolant pipe “stint” if the coolant transfer pipe hasn’t ever been done.

With regard to the clutch fan I would remove all of the radiator guards and try to take it out with the water pump if possible, may be easier to get it dismantled once you have good line of sight on it... vs having it flopping around while you’re trying to get something to hold it in place in that narrow of space...


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Old 03-28-2019, 11:19 AM
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Quote:
Originally Posted by Purplefade View Post
I would agree with EODguy and add that while you’re in there with the water pump you may also want to do a coolant pipe “stint” if the coolant transfer pipe hasn’t ever been done.
He has an M54. No transfer pipe to worry about.

Your plan sounds good bmwtvboy and how I would proceed as well. Complete cooling system. A compression test shouldn't be necessary, but it would certainly give the "warm and fuzzies" concerning engine health.
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Old 03-28-2019, 11:51 AM
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You guys are great. Wish I knew how to post pics. SO, looks like the pump may have been a victim of belts tearing up. First, about three weeks ago I was hearing this odd rubber rubbing noise when first starting up and pulling away. Oddly, no lights, no codes, no other issues as the X drove away fine and noise disappeared within seconds. But upon further inspection I notice some odd rubbing spots on the A/C tension pulley, upper tension pulley n alternator pulley both don't roll freely. The belt was done about 50K and I was planning to do it. Strangely my clutch fan which is really old is still stiff when turning. BUT my w.pump pulley is shredded on the very back edge of the pulley, grooves are fine, but I'll change it anyway. Having a bit of a tussle getting that lower hose off the thermo end. Over flow was done about 55K miles ago. Leak down? Not sure I understand the process, although I have immediate access to coils n plugs. Haven't worn a silly, plastic cover in years. BTW, it cooled down rather quickly, within the hour waiting for tow truck. Not sure I figured out why the climate control buggered out. I think it blew a fuse. Checking as I go. Waiting for parts so I'll fix the earthquake in the driveway from tow truck, weed wacker carb rebuild, garbage disposal replacement and maybe get to yard week by birthday; this year is the big 60 . Shiet happens. Thanks again you guys are the best. I can do this.. OH, helpful hint. Last time I was in changing the alternator I used anti seize on the clutch fan, so after cutting loose all the tangle hose mess, it popped free with one try. Oh yeah. Pretty good for an amature.
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Old 03-28-2019, 11:53 AM
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Plastic vs. alu..

Sorry, forgot. What's the consensus on plastic w.pump pulley vs. Aluminum ?Does it really matter, the plastic one lasted over 150K miles. Just curious.
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Old 03-28-2019, 12:49 PM
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Quote:
Originally Posted by Bmwtvboy View Post
Sorry, forgot. What's the consensus on plastic w.pump pulley vs. Aluminum ?Does it really matter, the plastic one lasted over 150K miles. Just curious.
Either one is good as long as from a reputable brand. As you say, the OE is plastic and it lasted 150k.

Edit: Since a belt issue started this... I would also replace your idler pulley and tensioners for the serpentine belt and the AC belt.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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Old 03-28-2019, 12:56 PM
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Search forum for "partial cooling overhaul".

I wrote that DIY a while ago.
Recommendations are PNs (such as HEPU water pump etc.) is included in tge DIY.
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Old 03-28-2019, 01:46 PM
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Wife hit the overheat red light pretty hard when expansion tank split open. You stopped a lot faster than she did and we have no symptoms of internal damage


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Old 03-28-2019, 04:20 PM
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Quote:
Originally Posted by crystalworks View Post
He has an M54. No transfer pipe to worry about.

Doh! Totally missed the 2001 3.0 part of that..


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