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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 10-07-2009, 01:15 AM
brembo brembo is offline
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Location: new jersey
 
Join Date: Oct 2009
Posts: 2
Mein Auto: 525
ignition coil melts

hi got a problem with my ignition coil replaced it 3rd time on the 4th cylinder when i installed the new coil burns right away
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  #2  
Old 10-07-2009, 02:25 AM
bishoOo bishoOo is offline
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Location: Jordan
 
Join Date: Oct 2009
Posts: 31
Mein Auto: Bmw E39 525I
i guess there is something wrong in the wiring!!
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  #3  
Old 10-07-2009, 05:51 AM
cn90 cn90 is online now
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Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,305
Mein Auto: 1998 528i 5-sp 103K miles
1. How old are the Spark Plugs?
Use NGK only.
Choose either 1- 2- or 4-prong Sp Plugs.

2. Bad ground. Anyone works on the car before and forgot to re-attach the ground cable?
http://www.bimmerfest.com/forums/sho...d.php?t=254529



3. Ignition Coil Brand: there is a debate going on Bremi vs Bosch so look it up.
Use only OEM part here.
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  #4  
Old 10-10-2009, 05:08 AM
brembo brembo is offline
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Location: new jersey
 
Join Date: Oct 2009
Posts: 2
Mein Auto: 525
i cant remember how old are the old plugs but i replaced them earlier. i think we got the problem already but waiting for final check its a faulty DME 4th mosfet/transistor that control the coils
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  #5  
Old Today, 05:42 PM
francisngara francisngara is online now
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Location: seattle, washington
 
Join Date: Jun 2011
Posts: 21
Mein Auto: 2002 530i
Hi, I got the same problem with my coil keep melting on 5th ; how did you figure out your problem and how did you fix it?...thanks a lot!
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