Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-14-2020, 02:53 PM
Member
 
Join Date: Mar 2019
Location: Ann Arbor, MI
Posts: 34
petebert is on a distinguished road
Heard a whine at the rear, stalled today, fuel pump?

05 X5, 135k miles. Just yesterday while checking the tire pressure with the engine running I heard a whining noise at the rear of the vehicle. Today my wife says it stalled while pulling out onto a road. It then started again and she kept going, driving fine for now. Last I saw it was down around a 1/4 tank.



So fuel pump or transfer pump? Looks like when the transfer pump goes it won't start at all until you add more fuel? So probably fuel pump?
Reply With Quote

Sponsored Links

  #2  
Old 01-14-2020, 03:20 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 5,104
andrewwynn is on a distinguished road
The fuel pump always whines when running just not that obvious once the car starts.

You usually cant start the car once it stalls due to transfer pump failure but adding a couple gallons of gas you will be able to drive maybe 10-15 miles.

Learn how to use hidden menu test 6. It will show the quantity of gas left and right and you can determine what the fault is just from the gas tank levels.

Eg: if the right side drops below 1L of fuel before the left goes to zero the transfer pump oring has failed. (50 repair).
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #3  
Old 01-14-2020, 05:03 PM
Member
 
Join Date: Mar 2019
Location: Ann Arbor, MI
Posts: 34
petebert is on a distinguished road
My wife asked me to go pick it up. Ran like crap, I put it in neutral at a stop light so I could keep it from stalling.


Here's the fuel tank status with the fuel gauge showing just under a 1/4



Here's the codes
Reply With Quote
  #4  
Old 01-14-2020, 05:10 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 5,104
andrewwynn is on a distinguished road
16.6/2.6 is ok reading. If you get a cylinder misfire the computer will shut it off and car will run like crap until you clear the code

You can get random cyl misfire from cam position sensor; was my first repair on my car and almost never will you get an error directly related to cps.

I would make sure you are getting full pressure for fuel at the rail.
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #5  
Old 01-14-2020, 05:17 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 5,104
andrewwynn is on a distinguished road
The primary example of CPS failure is this;

Drive from 0 to 5-7 mph then coast. Car stalls. Will re start usually not a problem. May not do that again for a month.

Happened to me when I would meander through a parking lot and when I let off throttle tuning into a spot the car would shut itself off.

The other time it happened was pulling forward at a traffic light in the left trim lane and coasting to a stop waiting for traffic.

If those examples feel familiar get an own or oe CPS for the intake side it's almost certainly the problem.

The car has no problem getting fuel out of the tank when down to 0.0L on the right side (because there is about 3.6L more past zero) Soo unless the electric pump had failed it's not fuel delivery

Wife's exhaust CPS failed recently and to my utter shock it set a code actually related to the actual part!
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #6  
Old 01-14-2020, 05:40 PM
Member
 
Join Date: Mar 2019
Location: Ann Arbor, MI
Posts: 34
petebert is on a distinguished road
I cleared the codes, started, still idles rough. CEL came back, checked and it was lean bank 1/2. Cleared again, drove a little, now I'm just getting cylinder 4 misfire.
Reply With Quote
  #7  
Old 01-14-2020, 07:24 PM
bcredliner's Avatar
.1 decrease 0-60 time = $1000 & DIY
 
Join Date: Jun 2008
Location: Little Elm,Texas. (40 minutes North of Dallas)
Posts: 7,023
bcredliner is on a distinguished road
As mentioned, I would eliminate any possibility it is a fuel pressure issue with a fuel rail pressure test before moving on to other possibilities. Easy to do and if you don't have the tester it is inexpensive or most auto parts stores will do it free of charge.
__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
Reply With Quote
  #8  
Old 01-14-2020, 08:03 PM
andrewwynn's Avatar
Member
 
Join Date: Jun 2015
Location: Racine, WI
Posts: 5,104
andrewwynn is on a distinguished road
I didn't see mention of which engine.

M62 has two intake cam sensors M64 has an intake and exhaust. I have the M54 but have worked on the m62tu engine. You will usually get random errors when intake CPS is to fault: cyl4 missfire with fuel cutoff for example.

Wife's X5 was having random misfire that was traced to a bad coil. Swapped cylinder and the missfire followed, swapped two coil packs for hand me down and when a third started acting up I ran some injector cleaner and problem vaporized.

So I would run some injector cleaner, I used Lucas. Then see if it happens again and if it happens when you give a little throttle to move 20' and coast. If it stalls at that point, almost surely CPS

If you keep getting lean codes you want to check for fuel pressure and vacuum leaks. The injectors pulse for set amount of time and use the math based on 50psi. If you have 45 psi you'll be running lean 10%.

If I get an error on one cylinder I will swap the coil with a nearby cylinder and also check the plug and clean it.

If the error follows the coil to the other cylinder, change the coil, if it doesn't than it's likely the injector (or a global problem like low fuel pressure or MAF)
__________________
E53 / M54 2001 3.0i gas LHD (pair of them: his & her)
Reply With Quote
  #9  
Old 01-14-2020, 08:58 PM
upallnight's Avatar
Member
 
Join Date: Aug 2012
Location: Cook County
Posts: 6,500
upallnight is on a distinguished road
Since you have a lean condition n both banks I would suggest that you look for a vacuum leak. If you have the 6 cylinder engine, check the intake boot rubber elbow connection to the idle air controller (IAC).
__________________
2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD
Reply With Quote
  #10  
Old 01-14-2020, 10:21 PM
Member
 
Join Date: Jun 2014
Location: Omaha, NE
Posts: 1,324
cn90 is on a distinguished road
I have the feeling this is "O-ring issue"...
__________________
1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 09:46 AM.
vBulletin, Copyright 2020, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.