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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 11-13-2012, 01:36 PM
Doktor Bert's Avatar
Doktor Bert Doktor Bert is offline
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E93 Cranks But Won't Start - Tech Tip:

Had a 2008 328i (28,000 miles) come in with a crank but no start condition. The dealer had checked everything and came up empty handed. I discovered the problem was a loose ground behind the upper half of the rear passenger's seat. I applied dielectric grease and tightened the 6mm nut (10mm hex) and the car fired right up.

Hope this helps...

P.S. My bad, E90
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Last edited by Doktor Bert; 11-13-2012 at 02:06 PM.
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  #2  
Old 11-13-2012, 02:09 PM
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DSXMachina DSXMachina is offline
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Location: New Hampshire
 
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Mein Auto: 335i E92 TiAg 6MT ED
Quote:
Originally Posted by Doktor Bert View Post
Had a 2008 328i (28,000 miles) come in with a crank but no start condition. The dealer had checked everything and came up empty handed. I discovered the problem was a loose ground behind the upper half of the rear passenger's seat. I applied dielectric grease and tightened the 6mm nut (10mm hex) and the car fired right up.

Hope this helps...

P.S. My bad, E90
What was the ground for? Was it a muti-point ground? How did you find it? Let's face it, the back of the car is not where we usually start looking.
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Old 11-13-2012, 02:11 PM
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Doktor Bert Doktor Bert is offline
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Originally Posted by DSXMachina View Post
What was the ground for? Was it a muti-point ground? How did you find it? Let's face it, the back of the car is not where we usually start looking.
Yes, blade-type multi-point ground. Just started looking at the wiring diagram and found the grounds for the DME were located there.
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Old 11-13-2012, 03:48 PM
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DSXMachina DSXMachina is offline
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Quote:
Originally Posted by Doktor Bert View Post
Yes, blade-type multi-point ground. Just started looking at the wiring diagram and found the grounds for the DME were located there.
Good catch!

Would you mind taking a look at Autoque's thread in regard to vanos and valvetronic? It's not really about those things. Your input would be helpful.
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Old 11-13-2012, 04:28 PM
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Doktor Bert Doktor Bert is offline
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Sure, I'm not really a BMW expert, I'm actually a Mercedes-Benz guy, but I am happy to help. Can you send me a link????
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Old 11-13-2012, 06:31 PM
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CALWATERBOY CALWATERBOY is offline
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Mein Auto: 2009 E93 N54
Quote:
Originally Posted by Doktor Bert View Post
Had a 2008 328i (28,000 miles) come in with a crank but no start condition. The dealer had checked everything and came up empty handed. I discovered the problem was a loose ground behind the upper half of the rear passenger's seat. I applied dielectric grease and tightened the 6mm nut (10mm hex) and the car fired right up.

Hope this helps...

P.S. My bad, E90

THAT'S good info - thanks!


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