|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
reliability vs driving habits
|
|
05-15-2014, 02:43 PM | #1 |
Captain
261
Rep 776
Posts |
reliability vs driving habits
How many fuel pumps die because people run the tank dry? How many Turbo failures due to people firing up their car and getting on it right away without oil hitting temp, or shutting car off right after a good beating?
Discuss. |
05-15-2014, 03:38 PM | #3 |
Is it the shoes!?
3884
Rep 5,112
Posts |
You will kill your fuel pump if you drive it all the way down to empty enough times. That's a fact of all cars. When your fuel light comes on, you should go get fuel. You've got a buffer of about 20-30 miles before you hit the "you're stressing your fuel pump" mark.
|
Appreciate
0
|
05-15-2014, 03:39 PM | #4 | |
Lieutenant Colonel
215
Rep 1,818
Posts |
Quote:
less fuel means the pump will run hotter, so even if you aren't running it dry, keeping it low will also harm the pump see this a lot with those people that just put in $5 at a time etc |
|
Appreciate
0
|
05-15-2014, 03:43 PM | #5 |
Captain
261
Rep 776
Posts |
Do our cars have Turbo timers that pump oil after car is off? I've read on a few other platform forums about how bad hitting boost is when your oil isn't at temp. Or hitting boost at low rpm.
|
Appreciate
0
|
05-15-2014, 03:48 PM | #6 |
Lieutenant
101
Rep 535
Posts |
If the oil is hot, the electric water pump and oil cooler will continue to run after the car is shut down. At least mine does.
|
Appreciate
0
|
05-15-2014, 04:03 PM | #8 |
Thats all you need to know.
43
Rep 1,188
Posts |
Oil still flows even if it's not up to temp, I don't thing that would be a reason for a turbo to fail early.
__________________
- M2 2018 LBB / Black
- X5 F15 2016 Mineral White / Black 1981 Delorean number 6489 |
Appreciate
0
|
05-15-2014, 04:05 PM | #9 | |
Major General
456
Rep 6,478
Posts |
Quote:
Yes, chain driven.
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII |
|
Appreciate
0
|
05-15-2014, 04:05 PM | #10 |
Lieutenant Colonel
215
Rep 1,818
Posts |
it flows, yes, but when it's dead cold it's certainly not going to lubricate well at even engine redline, nevermind the turbos spinning far faster than that
|
Appreciate
0
|
05-15-2014, 04:07 PM | #11 | |
Lieutenant Colonel
215
Rep 1,818
Posts |
Quote:
oil will not flow with the motor off. oil is only for lubrication on our cars tho, the effective cooling is water and that will keep flowing with the electric pump if the car decides temps are too high still. |
|
Appreciate
0
|
05-15-2014, 04:17 PM | #12 |
Thats all you need to know.
43
Rep 1,188
Posts |
Isn't oil used to cool turbos? I think I'd take my oil cooler rather than hotter if that's the case.
__________________
- M2 2018 LBB / Black
- X5 F15 2016 Mineral White / Black 1981 Delorean number 6489 |
Appreciate
0
|
05-15-2014, 04:20 PM | #13 |
Lieutenant Colonel
215
Rep 1,818
Posts |
|
Appreciate
0
|
05-15-2014, 04:39 PM | #15 |
Captain
261
Rep 776
Posts |
So our turbos are water cooled, and don't have oil feed lines? My concern with shutting the car off super hot was the oil in the Turbo oil feed and return lines would burn and get caked.
|
Appreciate
0
|
05-15-2014, 04:44 PM | #16 | |
Lieutenant Colonel
215
Rep 1,818
Posts |
Quote:
the coolant will continue to circulate if this is a problem, so it should reduce the temps from dangerous levels quickly enough. in fact, this is BETTER than idling a motor, as you're still generating heat with minimal coolant flow and oil pressure. Without the motor running, the fan/radiator can cool everything down faster. |
|
Appreciate
0
|
05-15-2014, 05:51 PM | #17 | |
Colonel
291
Rep 2,189
Posts |
Quote:
Have you done a fuel upgrade in one of these cars yet? When I did my tank was almost empty but the bucket is full of fuel. You'd have to run it to fumes to actually drain the bucket. |
|
Appreciate
0
|
05-15-2014, 07:26 PM | #18 |
Lieutenant
59
Rep 552
Posts |
Oil stops flowing when engine is shut. Pressing the pedal hard at low rpms heats up the turbo most and may not activate the cooling fan when engine is shut off due to the medium engine temp. Doing this repeatedly will cause premature wear and tear. A good way to drive turbo cars includes being easy on the accelerator last 2-3 minutes of the ride.
|
Appreciate
0
|
05-15-2014, 08:39 PM | #19 |
Major
56
Rep 1,464
Posts
Drives: 2009 BMW 335xi
Join Date: Feb 2012
Location: Maryland
|
This is about the most clueless bunch of people I have ever seen. Mosr of you don't know anything about what you are discussing. You should all trade in your cars and stick to hyundais.
|
Appreciate
0
|
05-15-2014, 08:49 PM | #20 |
Second Lieutenant
32
Rep 252
Posts
Drives: 2020 M340 xi
Join Date: Jun 2012
Location: Milwaukee
|
Why don't you enlighted this 'most clueless bunch of people' if you know better?
|
Appreciate
0
|
05-15-2014, 09:22 PM | #21 |
Major
56
Rep 1,464
Posts
Drives: 2009 BMW 335xi
Join Date: Feb 2012
Location: Maryland
|
The turbos are oil and water cooled. The water pump runs after the car is turned off to cool everything back down thus no need for a turbo timer.
The manual actually says not to let the car warm up (sitting still at idle) before driving it. Most say to just take it easy (less than 3500 rpm or so) for 5 or 10 mins or so to let everything warm up. I wait for the oil temp gauge to start moving. There is absolutely nothing wrong with running your tank down to E. This is normal and the fuel system was designed to handle this. I probably wouldn't keep it there but who puts $5 in their bmw over and over anyway. As far as the original question, there is no way to gather that data. You are thinking and worrying too much. Just drive the damn thing. |
Appreciate
0
|
05-15-2014, 09:28 PM | #22 |
Lieutenant Colonel
35
Rep 1,652
Posts
Drives: '10 AW/CR e92 6mt 335i
Join Date: Mar 2012
Location: Chandler, AZ
|
I like to follow these rules myself.
|
Appreciate
0
|
Bookmarks |
|
|