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Help! Dealership oil change, then runaway fan
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12-12-2014, 10:39 AM | #1 |
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Help! Dealership oil change, then runaway fan
Im at the dealership as I type this (bmw of silver spring). Came in for an oil change. 2.5 hrs later, they're done. I start to drive off and notice the blower fan is running full blast. Sounds like the car is trying to take off.
Dealer is now claiming that the oil change couldn't affect the cooling system and its not on them. 1- I know most likely issue is the water pump... Is this a case of just ridiculous timing? The water pump happens to fail exactly today after dropping it off, before picking it up? 2- if it is the water pump, what's the time look like to diy this? Also, would it be safe to get it home ~30-40 miles. 3- any recourse on getting them to cover this? Escalated to the service manager who agreed to do the diagnostic for free but said that he "can't blame this on his techs, since he can't put them at the scene of the crime" Any other thoughts?? I knew I should have done the oil change myself... Got suckered by a coupon. |
12-12-2014, 01:30 PM | #2 |
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i'd turn around and say engine is sounding weird. play dumb with them. atleast youll get them to look it over...
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12-12-2014, 01:59 PM | #3 |
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If the oil filter housing gasket is leaking or was some how disturbed to the point of leaking it can leak into the water pump and cause it to fail.
Are you getting codes for water pump failure though? |
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12-12-2014, 05:25 PM | #4 |
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The service department at BMW of Silver Spring (formerly known as Tischer and the home of www.getbmwparts.com) is very good. I think this was simply a case of unfortunate timing. The chances of an oil change affecting anything in the cooling system are extremely slim.
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12-12-2014, 05:34 PM | #5 |
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How would the oil get into an externally mounted and completely sealed water pump? Even the electrical connector is designed to resist fluids since it's exposed to the elements.
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12-13-2014, 02:47 PM | #7 |
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While that could cause a host of problems, water pump failure isn't one of them.
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12-13-2014, 03:18 PM | #8 |
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The water pump fails because the control electronics overheat, not because of coolant (and in your theory oil/coolant) contamination.
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12-13-2014, 03:29 PM | #9 |
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OP, a simple scan of the ECU by the dealer will indicate when the pump failed (if the pump is the culprit). In many instances, the pump starts to fail over time and codes are stored in the ECU that indicate the mileage the failure occurred. Usually, the 2E81 "slow speed" code shows up a the pump ages and starts to fail.
BWM of Silver Spring is a fair dealership, I've had work done there when I lived in the DC area. An oil service would not have the tech anywhere near to cooling system. Techs make money by servicing vehicles as efficiently as possible, they are not going to take time to sabotage your car in the hopes you'll bring it back to fix it. Their time is much more valuable (to them) so they get on with the next car on their schedule. Dealership mechanics get rated for repair returns and repair corrections, they do not need to break your car to fix it. BMW of Silver Spring is a busy dealership, the techs have plenty of rich suburban Marylanders to earn a living from. |
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12-14-2014, 05:34 AM | #10 | |
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Quote:
Tell me more please |
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12-14-2014, 08:26 AM | #11 |
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If memory serves about 10 or more members here have opened up their old pumps. None found that the pump failed due to coolant contamination. They did find that the control electronics failed, as I did. When I scanned my car with my BT scan tool upon replacing the pump (you are suuposed to clear the failure codes first). On my car code 2E82 read: "Electrical Cooling Pump: Switch Off"149,521 miles - water pump temperature electronics 77 deg C (170 F).
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12-14-2014, 10:32 AM | #12 | |
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Quote:
And OP: It's most likely just bad timing. DIY on a water pump/thermostat is probably 3 hours if you know what you're doing. It took me 6 as I've never done it before and I had to keep coming back to the forums to look at the pictures to make sure I was doing the right thing. If you wanted to drive it home, that would really depend on if the water pump soft failed or completely failed. If it soft failed, that means it still sometimes works, and you might get lucky and able to get it home. If it's completely toast, your coolant temp will shoot up to unsafe levels in about 5 minutes of having the engine on. |
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12-15-2014, 03:32 AM | #13 |
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Another data point from this site:
"I wonder how many people (like me) got the call from the service department to tell them that all three needed to be done (at a cost of over $1500). Maybe because the three problems are related? Little hardened bits of rubber from the OFH gasket circulate throughout the cooling system and eventually foul the water pump and thermostat." e90 - N54 Oil Filter Housing gasket replacement (2007 335i automatic) |
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