Hey guys,
2002 325xiT 5speed
I was driving down the interstate and the car just died... Vehicle has 153,000 miles.
Tried starting it but it just cranks but won't start so I towed it home.
I diagnosed it with inpa/Bmw scanner p.a soft 1.4. I get the "crankshaft position sensor no signal" error.. I went ahead and purchased all three oem sensors the crankshaft sensor and both camshafts sensors (intake and exhaust)
Tried starting it again.. same problem.. cranks but won't start.
*checked fuel pressure at the rail and it's fine.
I proceeded by removing the coilpacks and the spark plugs and doing a visual test checking to see if I have spark, cylinders 3 and 4 are the only ones getting spark upon cranking. Swapped around the coilpacks and still only getting spark at 3 and 4.
Diagnosed again and still getting "crankshaft postion sensor no signal" message.
recent maintenance:
*changed fuel pump
*changed fuel filter
*changed spark plugs
*replaced with coil packs from my e38
My mechanic suspects the DME...
I'm looking to buy a used DME off a 2002 325i and swap the AM29F00BB chip, will I need to flash the DME to make it compatible with a XI?
2001 740i 6 speed M-Sport
2001 e46 M3 6spd
2002 325xiT 5 speed --- SOLD
1998 740iL 127k --- SOLD
Get one with the same part number, and all you'll need to do is swap that chip.
Are you still getting the crankshaft sensor error?
A bad sensor is more likely than a bad ECU.
Giftschrank Projekt
Yeah I replaced the crankshaft sensor but still get the same error.
2001 740i 6 speed M-Sport
2001 e46 M3 6spd
2002 325xiT 5 speed --- SOLD
1998 740iL 127k --- SOLD
I can confirm this procedure as well. The only way is you need good soldering experience in SMD. For the first time I made a copy of the chip, it is a TSOP 44 Flash you will need the right socket for the programmer, I used a galep4. It is a good choice to verify the checksum of the chip after it is programmed. Later you have to allign the EWS-DME process again, but it is fully working. My backround, the DME is sometimes destroyed by bad solenoids (especially fuel gas updates) who kill the Flash because of the missing diode inside the relays. No Adaption or erase of the Adaption after a Startup can occour.
So I purchased a used DME resoldered the chips, realigned the ews with the dme but the problem still persists. I still get the crankshaft postion senor no signal.. could it be the wiring (pretty hard to believe it would go out while driving)
what gives?
Last edited by zheina740; 07-04-2013 at 10:44 AM.
2001 740i 6 speed M-Sport
2001 e46 M3 6spd
2002 325xiT 5 speed --- SOLD
1998 740iL 127k --- SOLD
It's looking like you've bought a bad sensor, they will turn up brand new and non functioning but you can always check the wires to make sure they are OK.
Giftschrank Projekt
Another question.. After attempting to start the car I remove the crankshaft position sensor and find it covered in oil, is this normal?
2001 740i 6 speed M-Sport
2001 e46 M3 6spd
2002 325xiT 5 speed --- SOLD
1998 740iL 127k --- SOLD
Yep, it sits inside the crank case and it will get splashed by the engine oil.
Giftschrank Projekt
Thank you (especially enda320 and S ECU repair) for the valuable information on this thread. I can confirm successful chip swap as per info provided.
Nervous experience but use a decent electronic shop. I can recommend an excellent tech in the Heathrow area that did this repair for me.
Last edited by osc911; 09-21-2021 at 01:37 AM.
Hi,
I have engine swap done 323i@328i. I tried to perform DME update via WinFKP but after few % crashed it. DME seems to be bricked
I have spare DME from 328i engine donor, but I don't have EWS/Key.
Original 323i DME: MS42 5WK9037 (7 500 255)
Spare 328i DME: MS42 5WK90329 (1 430 844)
So am I able to swap mentioned 29f400 chip from 323i DME to 328i DME?
And important question is, if this 29f400 chip is also bricked .. or if this chip is untouched during flash and have all needed information even when flash has not been successful.
I think, if my 323i is completely bricked .. I will need another donor for DME+EWS+KEY. Am I right?
Thanks in advance.
Isn't it possible to change VIN in used DME with Tool32?
If they are both the same 5WK9 number, yes.
Infact, you won't need a blank eeprom, you can just take a copy with willem incase you have problems, then soldering that chip into the replacement ECU as it is.
Giftschrank Projekt
yes the they are same 5WK90012. i only like to do some experiment first with winkpf to update the software then to remap if i find something on net, but with the second dme.for that reason i like to clone my am29f400. this eprom is cheap and we will see thanks best regards !
You will still need to sync the EWS when you change between them, but it will be possible.
Giftschrank Projekt
You need to wipe the ISN first with an external programmer. It is near 0x4000 IIRC
I recently purchased a used ECU off e-bay, and removed the old EPROM from my old ECU and installed it in the new ECU. The car started up fine, but the same problem exists on the new computer. The computer is just not processing and showing the O2 sensors pre-cat. We have verified the O2 sensors are working fine with a volt meter at the ECU connector. Any ideas what could be causing the issue? I don't want to spend $450 just to find out the ECU was fine. Any assistance you can provide would be appreciated.
What are the fault codes coming up?
Giftschrank Projekt
Hello everyone, a few days ago I did the chip swap within MS43 ECU modules with different part numbers, and the car didn't start up, so now I did the chip swap within modules with same part number but the car is not starting yet, it needs to be realigned? how exactly is that realignment process? I'm a newbie and I will appreciate if you could explain a little more about software and tools to get the car running again. It's a 2001 330i. Thanks in advance!
Apologies for reviving an old thread, but just a few questions. Would the chip swap apply to ms45.1?
I fried my DME and it needs replacing, I'd prefer to buy a matching used DME and swap the chip as this is may be the least expensive route. I know it can't be that easy so what else may be involved?
If the chip swap can't work on the ms45.1 (2004 330i 6spd) then I may have to get it refurbished, I don't feel like swapping out keys, locks, tumblers and such.
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