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E39 M5 (1998-2003)

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  #1  
Old 04-27-2018, 01:13 PM
Ladrillo13 Ladrillo13 is offline
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Location: teacy, ca
 
Join Date: Nov 2017
Posts: 26
Mein Auto: 1999 bmw 328i e46
cylinder one misfire!!!

so ive recently changed the valve cover gasket, tested the fuel pressure, inspected the air intake boot and they are all good to go. the P0301 is going off on the check engine light, thats it. even when i erase the code, the car will drive for two days and the light will come back on.

how can this code be gone fixed??
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  #2  
Old 05-19-2018, 04:38 PM
ard ard is offline
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Location: Sierra foothills, California USA
 
Join Date: Jul 2009
Posts: 20,596
Mein Auto: '12 X5 35d/E39M5/996TTX50
Coil??? Swtich a pair...see if the code follows the coil that was on cyl 1
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Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #3  
Old 11-09-2018, 05:01 AM
Heffy1 Heffy1 is offline
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Location: Australia, Canberra
 
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Posts: 1
Mein Auto: E39 (2000)
Most likely ignition coil. 10 mins to replace. 60 dollars aussie to buy. Youtube clip on how to replace. Swap coils and retest to find bad one.

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