E90Post
 


GT Haus
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Extended Cranking



Reply
 
Thread Tools Search this Thread
      02-17-2013, 11:19 AM   #1
redz06
Private First Class
 
Drives: 2011 335i sedan
Join Date: Oct 2011
Location: Fulshear, TX, US

Posts: 106
iTrader: (0)

Extended Cranking

I searched and did not find any pertinent posts. My 2011 335i sedan has started having extended cranking times when cold. Sometimes it will not start until I give it a little throttle. It was not like this before. It would quickly start in any weather, whether the engine was cold or warm. And I never had to touch the throttle. Is something wrong?

The car has 22k miles on it and is completely unmodified.
redz06 is offline   United_States
0
Reply With Quote
      02-17-2013, 11:41 AM   #2
BOBKUR
Major
 
Drives: 2008 E 90
Join Date: Mar 2012
Location: CALIFORNIA

Posts: 1,346
iTrader: (2)

Fuel pump?
BOBKUR is offline  
0
Reply With Quote
      02-17-2013, 11:59 AM   #3
chromisdesigns
Lieutenant Colonel
 
Drives: 2008 BMW 335i sedan
Join Date: Jan 2010
Location: San Francisco

Posts: 1,754
iTrader: (0)

Quote:
Originally Posted by BOBKUR View Post
Fuel pump?
Yep -- typical first symptom of the HPFP going bad. Take it to dealer for diagnosis and replacement before it fails and strands you.
chromisdesigns is offline  
0
Reply With Quote
      02-17-2013, 06:20 PM   #4
redz06
Private First Class
 
Drives: 2011 335i sedan
Join Date: Oct 2011
Location: Fulshear, TX, US

Posts: 106
iTrader: (0)

Extended cranking

HPFP was my first concern as well. Although the weather was warmer today and the cranking before start was minimal. It reminds me of a problem that I had on my Porsche 944 Turbo where there are two pickups that read the position of teeth on the engine flywheel before they allow the car to start. If one of the sensors/cables has an intermittent fault it is most difficult to diagnose. Shops that were aware of the problem did not bother with chasing a diagnosis and just replaced both sensors cables. Problem solved.

The advice is right and this is a BMW warranty problem, and the dealer will get his chance to run it to ground at BMW's expense. If it is the HPFP, it is disappointing that this is still around in an August 2011 build car. Optimally, I would prefer to let BMW take care of it when I am back for my next oil and filter change. This is probably 4 months away, though. I wonder if it can wait that long?
redz06 is offline   United_States
0
Reply With Quote
      02-18-2013, 08:58 AM   #5
d8rknight
Lieutenant
 
d8rknight's Avatar
 
Drives: 2010 335i
Join Date: Jan 2011
Location: LA/MD guess im bi-coastal :)

Posts: 517
iTrader: (1)

Garage List
1998 Honda/Civic  [0.00]
2005 Yamaha R1  [0.00]
2011 Infinity G37x  [0.00]
2010 335i  [0.00]
Get your starter checked. Mine started with extended starts for about a week or two until it just wouldn't turn over
__________________
2010 335i Coupe / 6MT / Red Dakota Interior/ AUBURN WDE / PATRIOTS / CELTICS / REDSOX

07 e92 Sports Package 6MT - sold 03/2013
d8rknight is offline  
0
Reply With Quote
      02-18-2013, 12:25 PM   #6
chromisdesigns
Lieutenant Colonel
 
Drives: 2008 BMW 335i sedan
Join Date: Jan 2010
Location: San Francisco

Posts: 1,754
iTrader: (0)

Quote:
Originally Posted by redz06 View Post
If it is the HPFP, it is disappointing that this is still around in an August 2011 build car.
The changes BMW made in the pump and car programming reduced, but did not eliminate, the original problem. Best guess is that programming the low pressure pump to come on when car doors opened was the best part of the fix. The theory behind that was that the HPFP was running fuel starved for a few seconds every time the car was started, and eventually failed because of it.

It's debatable whether the various tweaks they made to the pump itself even mattered -- it was only once they made the programming changes that the incidence started dropping.

People do still report failed HPFPs even in the newer models.
chromisdesigns is offline  
0
Reply With Quote
      02-20-2013, 10:07 PM   #7
redz06
Private First Class
 
Drives: 2011 335i sedan
Join Date: Oct 2011
Location: Fulshear, TX, US

Posts: 106
iTrader: (0)

Extended Cranking

I have no signs of a half engine or any other distress. So my question is how BMW should discern that my HPFP is shot. For most starts there is no extended cranking time as well. It only occurs occasionally when the engine is cold.
redz06 is offline   United_States
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Forum Jump


All times are GMT -5. The time now is 07:23 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST