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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > long crank, ran crappy, restart, ran fine???



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      02-18-2013, 06:13 PM   #1
mxa121
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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
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      02-18-2013, 10:57 PM   #2
chromisdesigns
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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.
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      02-20-2013, 01:59 PM   #3
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Quote:
Originally Posted by chromisdesigns View Post
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?
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      02-20-2013, 02:15 PM   #4
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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
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      02-21-2013, 03:09 PM   #5
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Rattling wastegate.
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