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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-20-2014, 07:09 PM   #1
objec123
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Join Date: Jun 2014
Location: chicago
Posts: 2
My Ride: 99 328i
intermittent long crank time followed by no power

99 328i, 160k.

has new vanos seals, fuel pump and filter, spark plugs, intake cam sensor, no cel, no stored dtcs

sometime if I start car right away it has a long crank time before starting. after the long crank time and it does start it has no power, drives fine, no bogging or sputtering just no power. I pull over and shut car off then restart and it start up right away and has normal power.

most of time I key on, engine off for like 5 seconds before I start to prevent this problem

wtf???
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Old 06-21-2014, 11:05 AM   #2
scarede46er
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Join Date: Aug 2012
Location: Clemson, SC
Posts: 1,247
My Ride: 2001 BMW 325i ZSP
Sounds like a crankshaft sensor failure. Any codes? You would need a BMW scanner to scan for them.

Last edited by scarede46er; 06-21-2014 at 11:06 AM.
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Old 06-21-2014, 08:59 PM   #3
objec123
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Join Date: Jun 2014
Location: chicago
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My Ride: 99 328i
I have scanner, no codes.

ill check the rpm on scanner when I get a long crank
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Old 06-21-2014, 09:40 PM   #4
jfoj
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Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 10,485
My Ride: '06 330CiC, '03 M5
Quote:
Originally Posted by objec123 View Post
I have scanner, no codes.

ill check the rpm on scanner when I get a long crank
BTW you do not need BMWScanner or a specific BMW scan tool for this. A standard OBDII scan tool that read real time data is all that is really needed.

Just use your tachometer as a crank sensor tool, the tach should register around 200-400 RPM when cranking.
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