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BMW 3-Series (E90 E92) Forum
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DME failure
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07-03-2014, 02:53 PM | #1 |
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DME failure
After getting new turbos this week, I was excited to mount my 305/30/19 tires and head to great lakes dragaway. Went out for lunch today and the car apparently decided that it was time for a new DME and it would not start. I managed to get it running by resetting the DME,adaptations and all codes in INPA. The car was running really rough and my live datafeed showed 3-4-6 bank two at 21 AFR . This probably means only 3 cylinders are working at this time. I've ordered the mofsets and will try the fix when they get it here late next week or after even . Anyone know if I can get them here locally anywhere in Chicago?
Any of you have this issue with the DME failing and causing bank 2 injectors to shut off? Here is the list of codes pulled from DME: P30BB P2E7A P2F4F P2A96 P3100 |
07-03-2014, 03:18 PM | #2 |
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is it crazy i keep a set of 12 in my glovebox? Been there done that.
http://www.e90post.com/forums/showthread.php?t=734162 Here is the DIY . make sure to seal off the rest of the DME you are working on with lots of foil and do one at a time with letting it cool down between changing each mofset. Overheating the DME will cause the whole thing to stop working. |
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07-03-2014, 03:34 PM | #3 | |
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07-03-2014, 03:40 PM | #4 | |
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Here is where i got mine. They are in TX and so am i so it got here next day http://www.mouser.com/?utm_medium=em..._content=micon |
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07-03-2014, 03:41 PM | #5 | |
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now you do have to be careful not to put direct heat on anything else as the little capacitors could melt and move around. but anyhow the board is made of fiber glass so you will need much more heat than 450F to do any kind of damage to the board. either way the fix isnt really that hard
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07-03-2014, 03:45 PM | #6 | |
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07-03-2014, 04:53 PM | #7 |
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I got my from mouser (3 days for shipping), used insulated thermal tape to shield the other components near (the mosfets are large thus needing more heat than the tiny components around them), and each one took just under a minute to de solder. Don't forget to flux! I however pre warmed the dme slightly and did two at a time on different sides, waited about 5 minutes and did 2 more.
But I would seriously trust TJ on the matter, he was gonna help with mine but was out of mosfets from doing a DME a few days prior. He runs an electronics repair business... Edit- didn't read his reply |
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