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2E84 - How do I test the electric water pump?
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09-19-2011, 07:15 PM | #23 | |
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The new replacement thermostat is plastic compared to the original one that I had which was aluminum...Its a fail on BMW part because shit my car only has 8500 miles on a 2007 that I hardly drive and is garaged...Water pump manufactured by one any only Siemens who as we know makes the fuel pump also which mind you is a major fail..They are fail all around I am not sure if I had to change the thermostat but I changed it any way since the water pump was out.. |
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09-19-2011, 07:47 PM | #24 | |
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09-19-2011, 08:42 PM | #25 | |
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09-19-2011, 11:16 PM | #26 |
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Siemens did have major problems with manufacturing, including pumps and electronics. One of Siemens' subsidiary also made a part for Intel servers (silicon carbide diode to replace silicon) and that was a major reliability disaster.
Too bad, BMW did not enforce a strict reliability and lifetime spec on the pump. Now we got to live with the unpredictability of the water pump. |
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09-20-2011, 05:22 AM | #27 |
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09-20-2011, 07:57 AM | #28 |
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Damn you went to the dealer fully modded like that! Good luck with warranty work. Hope they don't cope out and say your warranty is voided with water pump. It doesn't take that long to change out the pump, I wonder why it's taking so long
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09-20-2011, 08:55 AM | #29 |
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I was also wondering if water pump is failing and since all the electronics are pretty much linked together to the ecu, will a failing pump that's not operating at 100% efficiency make the ecu not allow the car to boost correctly? I mean maybe it's a placebo effect but I felt after I got the car back from my INDY shop, the car felt more responsive as respect to boost
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09-30-2011, 09:49 AM | #31 |
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sorry forgot to update this...
electric water pump and thermostat replaced...issue resolved. all covered under warranty. |
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10-01-2011, 04:29 PM | #32 | |
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10-02-2011, 08:30 AM | #34 |
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Makes sense. Turbos run hotter. Maybe BMW should have just made a 400W pump for both the N52 and N54 and just run it a lower speed for the N52... (Would have been my engineering solution)
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10-02-2011, 11:38 AM | #35 |
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11-18-2011, 08:24 AM | #36 |
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welp....about two months later.....and my water pump just took a dump again. car started overheating again last night.....and the coolant reservoir cap actually released pressure this time as i had coolant around the outside of the container.
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11-19-2011, 12:28 PM | #38 |
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If the pump was new and died- that may indicate some other problem. How is your oil filter housing? Some chunks of gasket getting caught in the pump can clog it.
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11-19-2011, 09:28 PM | #39 |
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it was brand new from the dealership...
i'm thinking there may be some other problem too...i just don't know what else it could be. i'll be having the car towed back to the dealership next week. i have no idea how the oil filter housing is....i've always had my oil changes done at the dealership. |
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11-26-2011, 08:27 PM | #41 |
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Any good news? I think my water pump just pooped. I did the test it came on, sounded like a mini dish washing machine for the first minute then sounded like a normal electric motor after that. Could not hear water moving around. then it stayed that way for well over 12 mins... More like 30. So I just shut it off. Now it won't come back on. 50amp fuse is good.
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11-28-2011, 02:09 PM | #42 | |
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11-30-2011, 08:02 PM | #43 |
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UPDATE: There was a bad connection at the power distribution block, where the battery is located in the trunk. The bad connection caused the built-in fuse that powers the water pump to blow. The power distribution block was replaced along with the fuse....water pump is back to operating normally.
edit: The fuse I'm referring to is NOT the 50amp fuse located inside the DME box. Last edited by import36; 11-30-2011 at 08:03 PM.. Reason: added detail regarding the fuse that was blown |
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