335i Has Power but wont Crank

clappede90335i · 09-11-2020, 10:14 PM

I cant seem to find a way to upload the video besides this link but my car is acting strange, it started for me when i put the battery back in due to replacing the alternator. drove it for 10 minutes everything was fine then i get home tunr the car off then i go to start it back up to take it for a wash then suddenly it just loses the ability to crank. Still has everything else and voltage was running a solid 13.9 while driving with AC on. Need someones opinion before i pay an arm and a leg for a diagnostic at BMW. Please reply is you can think of anything.

http://streamable.com/ztacpa

Emilime75 · 09-11-2020, 10:52 PM

Fhack, why are you running your wipers dry? Your video is useless aside from having to listen to the most annoying squeak.

Take a meter and measure your battery voltage with the car off. If that shows good, check for voltage at the 12v primary supply to the starter. Then check for voltage at the crank trigger wire on the starter. Rule out the basic stuff first, like weak battery or a failed starter.

Meeni · 09-27-2020, 04:57 AM

Retrace your steps, you just touched the wire harness, and now you have no power. Something is not plugged right.

09-11-2020, 10:14 PM	#1
clappede90335i Registered 0 Rep 1 Posts Drives: BMW 335i Join Date: Sep 2020 Location: CA iTrader: (0)	335i Has Power but wont Crank I cant seem to find a way to upload the video besides this link but my car is acting strange, it started for me when i put the battery back in due to replacing the alternator. drove it for 10 minutes everything was fine then i get home tunr the car off then i go to start it back up to take it for a wash then suddenly it just loses the ability to crank. Still has everything else and voltage was running a solid 13.9 while driving with AC on. Need someones opinion before i pay an arm and a leg for a diagnostic at BMW. Please reply is you can think of anything. http://streamable.com/ztacpa
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09-11-2020, 10:52 PM	#2
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Fhack, why are you running your wipers dry? Your video is useless aside from having to listen to the most annoying squeak. Take a meter and measure your battery voltage with the car off. If that shows good, check for voltage at the 12v primary supply to the starter. Then check for voltage at the crank trigger wire on the starter. Rule out the basic stuff first, like weak battery or a failed starter.
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09-27-2020, 04:57 AM	#3
Meeni Gateropode 329 Rep 2,848 Posts Drives: BMW 330i 06 Join Date: Apr 2012 Location: TN iTrader: (0)	Retrace your steps, you just touched the wire harness, and now you have no power. Something is not plugged right.
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