|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Wot at 110mph and BOOOOMMM
|
|
06-08-2014, 04:25 PM | #23 |
Captain
53
Rep 719
Posts |
What is your build date? The mosfet issue only occurs with MSD80's as far as I know
__________________
ASE master tech (many moons ago)335xi- JB4 G5 iso/e50 custom flash/Custom meth/Borla mids/Custom x-pipe/DCI/ER charge pipe/Dual Ebay BOV's/Alpina B3 flash/Paddle shifter retro fit
|
Appreciate
0
|
06-08-2014, 05:30 PM | #24 | |
Lieutenant Colonel
108
Rep 1,529
Posts |
Quote:
so i tested all of the mosfets with a harbor freight multimeter on omega 200k setting and i put the negative on the back long strip of metal and the postive on the right side of the 3 strips coming out of the other end. i get a reading with all of them except injector 1...however none of them get a reading on the left strip that comes out of the mosfet. i saw the video of a guy testing the mosfets and he gets a reading putting the negative and postive wires on any combination on the mosfet so im confused as to why i only get a reading with the negative on the backside with the positive touching the strips coming out the other end. sorry i know its kind of confusing but i dont have too much time to take a picture and show you what i did so hopefully someone understands what im talking about and can comment...otherwise ill explain and take some pictures later of what im talking about. Thanks for the help guys.
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
Last edited by cleex024; 06-08-2014 at 05:42 PM.. |
|
Appreciate
0
|
06-08-2014, 06:09 PM | #25 | |
Captain
53
Rep 719
Posts |
Quote:
__________________
ASE master tech (many moons ago)335xi- JB4 G5 iso/e50 custom flash/Custom meth/Borla mids/Custom x-pipe/DCI/ER charge pipe/Dual Ebay BOV's/Alpina B3 flash/Paddle shifter retro fit
|
|
Appreciate
0
|
06-08-2014, 06:54 PM | #26 | |
Captain
68
Rep 942
Posts |
Quote:
http://www.e90post.com/forums/showthread.php?t=986168 Good luck sir.
__________________
|
|
Appreciate
0
|
06-08-2014, 07:31 PM | #27 |
Lieutenant Colonel
108
Rep 1,529
Posts |
well shit...it says msd80 lol...so is this going to keep happening even after i replace the mosfets?
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
Appreciate
0
|
06-08-2014, 07:41 PM | #28 | |
Lieutenant Colonel
108
Rep 1,529
Posts |
Quote:
could you show me which mosfets you bought from digikey and which solder paste you used? i looked on youtube and seems like they used some paste where you put anyway you like and once melted it would just go right to the metal...very cool video lol. still wonder if there would be any further issues down the road once replaced...you think the mosfets were bad/weak mosfets or is it something wrong with the dme itself...if thats the case i might just replace the dme altogether if its going to happen every so often.
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
|
Appreciate
0
|
06-08-2014, 07:45 PM | #29 |
Captain
53
Rep 719
Posts |
Good! Now this thread all makes sense... So know you know you are probably on the right track. It may happen again but out of the 3 I have repaired none have reoccurred. After you get it all back together make sure you check those coils out... I tend to replace the bank of coils that correspond to the mosfets that are blown.
__________________
ASE master tech (many moons ago)335xi- JB4 G5 iso/e50 custom flash/Custom meth/Borla mids/Custom x-pipe/DCI/ER charge pipe/Dual Ebay BOV's/Alpina B3 flash/Paddle shifter retro fit
|
Appreciate
0
|
06-08-2014, 11:19 PM | #30 |
Lieutenant
406
Rep 574
Posts |
30BA or 30BB when accompanied by misfire and O2 codes are usually the injector mosfets on MSD80 cars. Just replaced mine about a week ago, I did all 6. There was a recall due to a faulty batch of Mosfets for cars manufactured for a few month stent in late 2007, but they faulty mosfets most likely made their way into some early 2008 cars with the MSD80 as well. They are easy to test, just check for continuity in a few places, a couple will be different and those are the bad ones, but it's in your best interest to replace them all.
I also did plugs/coils at the same time when I was waiting on the hot air soldering station to arrive. It was actually a lot easier of a job than I expected. I was able to reuse the solder already on the board after desoldering the old chips, I only added solder to two of them. |
Appreciate
0
|
06-08-2014, 11:40 PM | #31 | |
Lieutenant Colonel
108
Rep 1,529
Posts |
Quote:
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
|
Appreciate
0
|
06-09-2014, 12:03 AM | #32 |
Banned
58
Rep 558
Posts |
no use actual solder wire from like radio shack and after you take off the old chips put some solder and melt it in to there old place, Than use the hot air gun to let it melt and place the new chips on them like the originals ones. Be careful with the heat gun let the surface area cool down after doing each one and cover up everything you are not changing with foil .
|
Appreciate
0
|
06-09-2014, 01:07 PM | #33 | |
Lieutenant Colonel
424
Rep 1,643
Posts |
Quote:
__________________
2007 E92 335i MT
|
|
Appreciate
0
|
06-09-2014, 02:01 PM | #34 | |
Lieutenant Colonel
108
Rep 1,529
Posts |
Quote:
anyway how did you get it fixed?
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
|
Appreciate
0
|
06-09-2014, 02:41 PM | #35 |
Lieutenant Colonel
424
Rep 1,643
Posts |
Well, I kind of damaged the Ecu trying to replace the mosfet. So I got hosed at the dealer for 6 new plugs, coils, and injectors, and a new dme. The dealer procedure is to first replace all injectors, then all cp/plugs, then finally dme.
Here, folks do the opposite - replace the dme, then replace any other parts that are damaged. Ideally you may want to replace all plugs and coils in the bank that went bad, and possibly injectors.
__________________
2007 E92 335i MT
|
Appreciate
0
|
06-09-2014, 03:02 PM | #36 | |
Lieutenant Colonel
108
Rep 1,529
Posts |
Quote:
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
|
Appreciate
0
|
06-09-2014, 06:02 PM | #37 | ||
First Lieutenant
12
Rep 368
Posts |
Quote:
Buy a real rework station, I got mine off amazon (looks just like V8bait's) for around 70-80 bucks and it lets you set both the temperature and speed of the air blowing out. |
||
Appreciate
0
|
06-09-2014, 09:32 PM | #38 | |
Lieutenant Colonel
108
Rep 1,529
Posts |
Quote:
By the way it is a butane solder/hot air gun
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
|
Appreciate
0
|
06-10-2014, 12:38 AM | #39 |
First Lieutenant
73
Rep 374
Posts |
This exact thing happened to me last year.
How many miles are on your car? Since the DME is part of the emissions system, dealers have to warranty them to 80K by law. My car was just a couple thousand miles over 80K. I got BMW to goodwill warranty me a brand new DME if i bought a new set of injectors and three new coil packs. It was still pricey, but the free DME made it much more palatable. |
Appreciate
0
|
06-10-2014, 01:06 AM | #40 |
Lieutenant
406
Rep 574
Posts |
No way in hell I was taking my weekend to return the car to stock, wait for an opening for service, wait for parts if they weren't in stock, and possibly pay the dealer (vs diy) for injectors/coils/plugs when all I needed was an $80 soldering rework station, $10 of mosfets, $15 of radio shack goodies, and a few beers.
And then another weekend putting mods back on. I can make use of the heat gun and soldering station anyway for bs stuff and the next time my phones screen breaks, so all is well that ends well. Good luck OP. |
Appreciate
0
|
06-10-2014, 06:53 AM | #41 | |
First Lieutenant
12
Rep 368
Posts |
Quote:
|
|
Appreciate
0
|
06-14-2014, 01:00 AM | #42 |
Lieutenant Colonel
108
Rep 1,529
Posts |
thanks everyone for the help...just finished and as long as you know how to solder its pretty easy. i had a little trouble with the soldering because didnt realize i needed to use flux...for those of you that know what flux is its a paste to basically make your solder stick to metal. i didnt know this and i tried reusing the solder that was already on here but wouldnt stick to save my life. so added a little flux and bam...sticks like a champ.
oh and by the way some people say they did it with 300-350F...well i needed more like 450F...and i blasted it for i would say a good 30 minutes removing and soldering the mosfets back on and i did not have a problem. also i did it multiple times without putting any kind of aluminum or heat sheild and didnt put a scratch on the board...for those of you that are worried about hurting your board...i dont think its possible with 450F...the boards are made of fiberglass. now i will say the only problem you could run into by putting that much heat for that long is that other parts my heat up and you might move them accidentally. lastly always check your readings after you are done...my very last time i soldered everything back together i didnt have enough flux and solder on my injector 1 mosfet leg...it wasnt connected by like 1/4mm...almost impossible to see but there wasnt a connection there and i got misfires...took it all apart and found that one mosfet to be loose and soldered it back together and everything runs fine. i did 6 pulls to about 100 in 3rd and 4th and no hiccups at all...anyone who has this problem its a pretty simple diy and im more than willing to help anyone thats local to me...im in nova now so hit me up if you need help.
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
Appreciate
0
|
06-14-2014, 03:08 AM | #43 | |
Colonel
208
Rep 2,799
Posts |
Quote:
__________________
thanks to MGallop |
|
Appreciate
0
|
06-14-2014, 11:19 AM | #44 |
Lieutenant Colonel
108
Rep 1,529
Posts |
glad i did too...because it took me like 2 resolderings to get it right...each time seemed like i kept missing something but the final time i took my multimeter and tested everything 3 times before i put it back in lol...even though it only takes me like 3 minutes to pull everything apart
__________________
Space Gray l 6MT l OSG LSD w/ VAC Race Diff Cover l Cobb e30 l Morr vs8.2 l UUC SSK w/ DSSR l VSRF Catless Dps l RPI Intercooler l CDV Removed l HID AE 8000k l ETS Catback l AST 5200 w/ Vorshlag Camber Plates l ER Dual Oil Coolers l Rear Camber and Toe Arms l K&N Drop In l Solid Tranny/Diff/Subframe Bushings l Bridgestone RE-11
|
Appreciate
0
|
Bookmarks |
|
|