long crank, ran crappy, restart, ran fine??? - BMW 3-Series (E90 E92) Forum

mxa121 · 02-18-2013, 06:13 PM

Went to the mountains for a spirited drive Sunday and thought I was not going to make it.
20 something degrees outside, initial crank was a bit extended, not much, but the car was idling badly and was vibrating more than usual.

I drove it for a bit thinking temp was the issue. It ran terrible, upon accelerating it would vibrate as if a cylinder was not firing.

I have read all about fuel pumps and how long cranks are a sign of failure, but my car restarted quickly and ran perfectly after I stopped. As I understand the long cranks would continue if it were the fuel pump, correct?

I then enjoyed a day in the mountains flogging my car through the turns and have not seen the issue pop back up again.

I am going in for service in about 300 miles for oil, headlight washer covers, battery cable, and possibly brakes.
Any ideas of what it was or if they can prevent a future occurrence of this?

thanks,
mxa

chromisdesigns · 02-18-2013, 10:57 PM

What you saw can be, not necessarily must be, an early warning of a failing HPFP. When our's started to go, at first we only got occasional long cranks, then after a while, it would do it every time the car sat overnight. Then I got a really long one, car finally started and ran fine. Took it in at that point and it had been throwing codes for a while, according to the dealer.

mxa121 · 02-20-2013, 01:59 PM

Quote:

Originally Posted by chromisdesigns

What you saw can be, not necessarily must be, an early warning of a failing HPFP. When our's started to go, at first we only got occasional long cranks, then after a while, it would do it every time the car sat overnight. Then I got a really long one, car finally started and ran fine. Took it in at that point and it had been throwing codes for a while, according to the dealer.

so once you took it to the dealer they replaced the fuel pump without a problem because the car had thrown internal codes?

Hybrid For Life · 02-20-2013, 02:15 PM

sounds like HPFP to me, they don't normally go out all at once sometimes they show some shines that seems pretty similar to yours.

Could also be your plugs

dootlah · 02-21-2013, 03:09 PM

Rattling wastegate.

02-18-2013, 06:13 PM	#1
mxa121 Forced Induction Club Drives: Boosted-Luxury-Sportmobile Join Date: Apr 2012 Location: Atlanta, United States Posts: 103 iTrader: (0)	long crank, ran crappy, restart, ran fine??? Went to the mountains for a spirited drive Sunday and thought I was not going to make it. 20 something degrees outside, initial crank was a bit extended, not much, but the car was idling badly and was vibrating more than usual. I drove it for a bit thinking temp was the issue. It ran terrible, upon accelerating it would vibrate as if a cylinder was not firing. I have read all about fuel pumps and how long cranks are a sign of failure, but my car restarted quickly and ran perfectly after I stopped. As I understand the long cranks would continue if it were the fuel pump, correct? I then enjoyed a day in the mountains flogging my car through the turns and have not seen the issue pop back up again. I am going in for service in about 300 miles for oil, headlight washer covers, battery cable, and possibly brakes. Any ideas of what it was or if they can prevent a future occurrence of this? thanks, mxa __________________ 2010 E92 335i Le Mans Blue Metallic 6MT 48k miles >Performance Exhaust System >Power Pack Kit Stage 2 >Red RPI Intake Scoops >Matte Black Kidney Grills
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02-20-2013, 02:15 PM	#4
Hybrid For Life Whats “out of spec”? Drives: Out of Spec Join Date: Nov 2011 Location: Santa Barbara, CA Posts: 1,793 iTrader: (4)	sounds like HPFP to me, they don't normally go out all at once sometimes they show some shines that seems pretty similar to yours. Could also be your plugs __________________ 2006 325i 6MT\|KW V2\|BBS Style 5's\|Black Kidneys\|Alpine Type R\|Alcantara Wrapped Sport Wheel\|Mtec V3 AE

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02-18-2013, 10:57 PM	#2
chromisdesigns Lieutenant Colonel Drives: 2008 BMW 335i sedan Join Date: Jan 2010 Location: San Francisco Posts: 1,742 iTrader: (0)	What you saw can be, not necessarily must be, an early warning of a failing HPFP. When our's started to go, at first we only got occasional long cranks, then after a while, it would do it every time the car sat overnight. Then I got a really long one, car finally started and ran fine. Took it in at that point and it had been throwing codes for a while, according to the dealer.

02-21-2013, 03:09 PM	#5
dootlah Private Drives: e30post.com Join Date: Feb 2013 Location: toobig Posts: 99 iTrader: (0)	Rattling wastegate.