random long cranks, rough idles

zamm3k · 07-01-2009, 09:37 AM

Anybody else on here have the random long crank (not tooo long, just 1 or 2 seconds) and a random lightly rough idle? I've gotten them randomly with no check lights. At first I figured it was my hpfp telling me it was slowly beginning to fail. But the more miles I go the more random it is. I have notice however it happens when I tend to go close to a quarter tank or a bit below, so indeed I do figure it is my fuel pump.

akak1997 · 07-01-2009, 09:46 AM

how many miles do you've on your car? and when was the last time you performed an oil change? I notice more long cranks now as I'm close to my 15k service. The last time I've changed oil myself is at around 7kmiles.
My car still perform normally in terms of power, and I don't notice any weird behavior. I scanned my car just 2days ago, no codes.
I think it's probably need some fresh oil or something

sbefar01 · 07-01-2009, 10:22 AM

almost definately the fuel pump, sometimes it had good days and sometimes its just random rough idle, long cranks. Its random I agree, but BMW looked at mine at replaced it after running tests.

zamm3k · 07-01-2009, 11:47 AM

Quote:

Originally Posted by akak1997

how many miles do you've on your car? and when was the last time you performed an oil change? I notice more long cranks now as I'm close to my 15k service. The last time I've changed oil myself is at around 7kmiles.
My car still perform normally in terms of power, and I don't notice any weird behavior. I scanned my car just 2days ago, no codes.
I think it's probably need some fresh oil or something

I'm at 11,500 miles and the last oil change I performed myself at 10k. I'm pretty sure its not the oil

Quote:

Originally Posted by sbefar01

almost definately the fuel pump, sometimes it had good days and sometimes its just random rough idle, long cranks. Its random I agree, but BMW looked at mine at replaced it after running tests.

Yes, I've contemplated that option, but since I do have a jb3 and catless downpipes I'll have to talk to my SA before I and see if theres a possiblity of avoiding taking all that out. In any case I was just curious how many get it, I know eventually I'll have to get it switched.

BimmerLearner · 07-01-2009, 01:20 PM

Its the fuel pump; exactly the same happened to me at 5k miles.

SD135i · 07-01-2009, 01:31 PM

Quote:

Originally Posted by BimmerLearner

Its the fuel pump; exactly the same happened to me at 5k miles.

I'm at 5400 miles and recently noticed a rough idle after starting the car. It clears up a minute or two later. Is that what you're talking about? Damned HPFP.

My135 · 07-01-2009, 02:00 PM

I wonder whether it is an easy DIY job since the HPFP itself is not that expensive.

Fuel pump, 135i 2008 $255.16 $204.13

BimmerLearner · 07-01-2009, 02:40 PM

Quote:

Originally Posted by SD135i

I'm at 5400 miles and recently noticed a rough idle after starting the car. It clears up a minute or two later. Is that what you're talking about? Damned HPFP.

Yeah, mine only did it once, then check engine light came on while driving to work. Its obviously covered under warranty, just a pain to have to deal with.

lacrosse · 07-01-2009, 07:20 PM

Quote:

Originally Posted by BimmerLearner

Its the fuel pump; exactly the same happened to me at 5k miles.

+1

scorcherjf · 07-01-2009, 07:49 PM

Yep, I have the exact same thing. Checked my codes and low and behold, a 2FBF was there at the 5100 mile mark. (I remember it distinctly because I was starting the car with some friends in the back and it took a long ass crank to start, quite embarrassing)

BrokenVert · 07-01-2009, 07:58 PM

My car has been doing this for the past 6 months. Lately it has been misfiring on every cold start. Yet it hasn't thrown a code. But you can hear the miss. Its going in on the 13th to get it replaced...hopefully. I have been bitching about it for the past 5 months.

adrean8j · 07-01-2009, 07:59 PM

I have had this as well with no SES or CEL. Have not broken out the BT yet to check for hidden codes though. I am sitting at roughly 6500miles, May '08 build...

hbiscuit · 07-26-2009, 03:26 PM

i just joined this club - long crank (5+ seconds), followed by rough idle...removed my pinout JB3 and am bringing it to the dealer this week.

i don't have a BT though so somewhat nervous...

i have a SES light on.

supergoji · 07-26-2009, 04:53 PM

can't you guys just upgrade to a walboro or a 300zx twin turbo fuel pump?
our fuel pumps are good to 750whp.

hbiscuit · 07-27-2009, 07:20 AM

Quote:

Originally Posted by supergoji

can't you guys just upgrade to a walboro or a 300zx twin turbo fuel pump?
our fuel pumps are good to 750whp.

they aren't the right type of fuel pump

hbiscuit · 07-27-2009, 11:05 PM

took my car in this morning, and had it back this afternoon.

HPFP replaced, symptoms cured!

Speed Cat · 07-28-2009, 01:06 AM

I also notice this with mine... Mostly when i start it or at a light... No engine lights thow...

IF your HPFP is on the way out, would it be producing less HP too....

I seam to have less power by a bit these days....

romak47 · 07-29-2009, 02:00 AM

Ditto. Have long starts and it flagged a engine light one time. Went to dealer and they downloaded a fuel pump problem. they didnt do anything to the car on the spot but said if it continues to do so, come back.. I will be going back to complain since my car still has those long starts randomly.
Anyone have issues dealing with getting their fuel pump replaced by BMW? any hassles? Is it a new type of pump or same type they slap into it? Dont want a repeat offender especially if i can get an upgraded/aftermarket pump that is better than stock anyhow !! :P

smolik · 07-29-2009, 11:08 AM

ask them to look at the coils, they prolly ran the hpfp test on ur car and its fine i had 2 have my coils swapped and need them done again since i have 10 sec long cranks on the first startup for the day.

07-01-2009, 09:37 AM	#1
zamm3k Bla! 82 Rep 909 Posts Drives: F82 M4 Join Date: Apr 2008 Location: Miami, FL iTrader: (4)	random long cranks, rough idles Anybody else on here have the random long crank (not tooo long, just 1 or 2 seconds) and a random lightly rough idle? I've gotten them randomly with no check lights. At first I figured it was my hpfp telling me it was slowly beginning to fail. But the more miles I go the more random it is. I have notice however it happens when I tend to go close to a quarter tank or a bit below, so indeed I do figure it is my fuel pump. __________________ ......................::.........................
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07-01-2009, 09:46 AM	#2
akak1997 Major 63 Rep 1,159 Posts Drives: BMW 135 @ 135mph Join Date: Aug 2008 Location: Los Angeles iTrader: (2) Garage List 2008 135i [0.00]	how many miles do you've on your car? and when was the last time you performed an oil change? I notice more long cranks now as I'm close to my 15k service. The last time I've changed oil myself is at around 7kmiles. My car still perform normally in terms of power, and I don't notice any weird behavior. I scanned my car just 2days ago, no codes. I think it's probably need some fresh oil or something
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07-01-2009, 10:22 AM	#3
sbefar01 First Lieutenant 16 Rep 331 Posts Drives: 1er Join Date: Nov 2007 Location: NJ iTrader: (0)	almost definately the fuel pump, sometimes it had good days and sometimes its just random rough idle, long cranks. Its random I agree, but BMW looked at mine at replaced it after running tests.
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07-01-2009, 01:20 PM	#5
BimmerLearner My car is less than a week old and on its 3rd tank 12 Rep 379 Posts Drives: Tiag 135 Vert Join Date: Jan 2009 Location: NE iTrader: (0)	Its the fuel pump; exactly the same happened to me at 5k miles.
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07-01-2009, 02:00 PM	#7
My135 Lieutenant Colonel 85 Rep 1,609 Posts Drives: Join Date: Mar 2008 iTrader: (0)	I wonder whether it is an easy DIY job since the HPFP itself is not that expensive. Fuel pump, 135i 2008 $255.16 $204.13 __________________ 7/08 135 Coupe, Crimson Red, 6 SP, Sport, Taupe Lette/Aluminum. Performance Mods: JB4 on Map 5, BMS DP Fix V3, Injen polished intake, AR Catless DP, Maddad resonated mid-pipes, aFe exhaust polished tips, ST Suspension Coil Over and Hotchkis front sway bar. Others: BMS OCC, BT Scanner, Mud Flap. Next Mods: AA Front Strut Brace.
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07-01-2009, 07:49 PM	#10
scorcherjf Captain 29 Rep 769 Posts Drives: 2008 135i Join Date: Nov 2008 Location: NJ iTrader: (2) Garage List 2008 135i [0.00]	Yep, I have the exact same thing. Checked my codes and low and behold, a 2FBF was there at the 5100 mile mark. (I remember it distinctly because I was starting the car with some friends in the back and it took a long ass crank to start, quite embarrassing) __________________
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07-01-2009, 07:58 PM	#11
BrokenVert Resident Kerbalnaut 477 Rep 10,703 Posts Drives: Topless Brute/Hybrid Boogaloo Join Date: Apr 2009 Location: Fahrvergnügen/NY iTrader: (0)	My car has been doing this for the past 6 months. Lately it has been misfiring on every cold start. Yet it hasn't thrown a code. But you can hear the miss. Its going in on the 13th to get it replaced...hopefully. I have been bitching about it for the past 5 months. __________________
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07-26-2009, 03:26 PM	#13
hbiscuit First Lieutenant 11 Rep 319 Posts Drives: 2008 M3 Join Date: Jun 2008 Location: Baltimore, MD iTrader: (0)	i just joined this club - long crank (5+ seconds), followed by rough idle...removed my pinout JB3 and am bringing it to the dealer this week. i don't have a BT though so somewhat nervous... i have a SES light on.
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07-26-2009, 04:53 PM	#14
supergoji Performance nutcase 2 Rep 25 Posts Drives: 91 300zx TT / 94 Supra TT Join Date: Jul 2009 Location: Westchester county NY iTrader: (0)	can't you guys just upgrade to a walboro or a 300zx twin turbo fuel pump? our fuel pumps are good to 750whp.
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07-27-2009, 11:05 PM	#16
hbiscuit First Lieutenant 11 Rep 319 Posts Drives: 2008 M3 Join Date: Jun 2008 Location: Baltimore, MD iTrader: (0)	took my car in this morning, and had it back this afternoon. HPFP replaced, symptoms cured!
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07-28-2009, 01:06 AM	#17
Speed Cat Second Lieutenant 22 Rep 231 Posts Drives: 135i Join Date: Jan 2009 Location: Calgary Canada iTrader: (0)	I also notice this with mine... Mostly when i start it or at a light... No engine lights thow... IF your HPFP is on the way out, would it be producing less HP too.... I seam to have less power by a bit these days....
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07-29-2009, 02:00 AM	#18
romak47 Captain 53 Rep 941 Posts Drives: like a bat out of hell Join Date: Oct 2008 Location: SoCal iTrader: (0)	Ditto. Have long starts and it flagged a engine light one time. Went to dealer and they downloaded a fuel pump problem. they didnt do anything to the car on the spot but said if it continues to do so, come back.. I will be going back to complain since my car still has those long starts randomly. Anyone have issues dealing with getting their fuel pump replaced by BMW? any hassles? Is it a new type of pump or same type they slap into it? Dont want a repeat offender especially if i can get an upgraded/aftermarket pump that is better than stock anyhow !! :P
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07-29-2009, 11:08 AM	#19
smolik First Lieutenant 30 Rep 312 Posts Drives: AW F30 335i Join Date: Oct 2007 Location: South Florida iTrader: (0)	ask them to look at the coils, they prolly ran the hpfp test on ur car and its fine i had 2 have my coils swapped and need them done again since i have 10 sec long cranks on the first startup for the day.
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