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X5 E53 (1999 - 2006)
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  #1  
Old 01-24-2013, 12:22 PM
toxicg35 toxicg35 is offline
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Location: usa
 
Join Date: Jan 2013
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Mein Auto: x5/323/745
HELP! Misfire E53 2001 X5 3.0i - P1349, P1347

hello i need help to try to figure it out i got an x5 and i been having problems codes p1347 p1349, tested coils and their good, replaced disa, intake elbow, pcv and nothing, what it does is when you first drive the car is good for about 20min of driving it when idling at a light or something starts to misfiere but the wierd thing is that if you turn it off and then turn it back on its all good, any ideas ??

Last edited by toxicg35; 01-24-2013 at 12:28 PM.
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  #2  
Old 01-26-2013, 09:22 AM
upallnight upallnight is offline
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Location: Crook County
 
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Mein Auto: BMW, Lotus, Porsche
You injectors are being turn off when the computer senses x numbers of misfires. This is to prevent damage to the cat. converter. By shutting down and restarting you are rebooting the computer so it will count the missfires again and once it reach a certain number of misfires it shut down the injectors and you will notice the missfire. You need to find out why you have a miss.
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Old 01-26-2013, 09:34 AM
toxicg35 toxicg35 is offline
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Mein Auto: x5/323/745
I tried different things and I havent figured it out, any ideas???
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  #4  
Old 01-26-2013, 09:32 PM
upallnight upallnight is offline
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How did you test the coils? Did you use an ohm meter?

I had a misfire and I finally found the problem being a bad coil. The coil tested good on an ohm meter, but since I was still getting a misfire, I swap the coils to another cylinder. Misfire was still there, but the misfire moved to the other cylinder.

Brought a new coil pack at autozone, clear the trouble code and never had the SES come back on.
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