BimmerFest BMW Forum banner

1 - 13 of 13 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter · #1 ·
Hi, I have a 2001 320ci with maf problems. Runs rough like its going to stall at start up. Removed maf and it runs better so I guess i need a new one. my question is, if i buy a new one do i need to get it reprogramed on a 2001 or is it just plug n play?
Thanks in advance.
 

·
Kostspieliger Spaß Quandt
Joined
·
879 Posts
Plug n play - Where are you located? The 320 e46 was not sold in the USA but only in Canada, EU and some other destinations. On my 320 test car the MAF is the exact same one from a 325 of the same model year. Don't buy anything other than Siemens (this includes the Bosch aftermarket)

Edit: Here's your part number
Siemens part number 5WK96050Z
BMW part number 13621432356

Fitment: BMW 320i 05-01; 323Ci 2000; 323i 00-99; 323is 1999; 325Ci 03-01; 325i 03-01;
325xi 02-01; 328Ci 2000; 328i 00-99; 525i 03-01; 528i 00-99; Z3 02-99
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #3 ·
Hi BMW-North Thanks for the quick reply :)
Im in the UK, Its my first BMW so im not used to anything atm.
Im looking at them now at they are very expensive! You say only get Siemens, what about a used one? I know its taking a chance but I only paid £700 for the car and shelling out nearly £200 for a maf seems excessive, especially as there needs other things doing too.
Any advice is greatly appreciated.
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #4 ·
Edit: Here's your part number
Siemens part number 5WK96050Z
BMW part number 13621432356

Fitment: BMW 320i 05-01; 323Ci 2000; 323i 00-99; 323is 1999; 325Ci 03-01; 325i 03-01;
325xi 02-01; 328Ci 2000; 328i 00-99; 525i 03-01; 528i 00-99; Z3 02-99[/QUOTE]

Thank you BMW-North :)
 

·
Kostspieliger Spaß Quandt
Joined
·
879 Posts
I'm pretty sure there is a Hyundai Sonata that uses the exact same MAF as this engine - check over at e46 fanatics I recall posting about it about 10 years ago. You might find it cheaper there. If you get a used one make sure there is a money back guarantee.

Check the MAF wiring connection first - often the female connections get worn and it doesn't make good contact.
 

·
Registered
Joined
·
5,349 Posts
The problem isn’t the MAF. It sounds like you have vacuum leakS. Disconnecting the MAF causes the engine computer to run an overly rich fuel/air mixture. This masks vacuum leakS. Have the intake smoke tested.

Don’t throw parts at a problem. Doing so wastes money, doesn’t fix the problem and it angers the BMW goddesses. Get the OBDFusion app for your smartphone or tablet. Go to E46Fanatics and search for threads on OBDFusion in which jfoj has commented. He’s the guru.
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #8 ·
Just to update and for others who might have same problem It turned out to be the MAF, bought a new one and all it good :)
 

·
Keeping it surreal
Joined
·
43,282 Posts
good news. Did you buy the Siemens one at Hyundai or elsewhere?
I`ve heard that the Hyundai Siemens unit is identical to the BMW unit, except for the shape of the wiring connection plug. Can you confirm this ? Thanks ! :thumbup:
 

·
Kostspieliger Spaß Quandt
Joined
·
879 Posts
I`ve heard that the Hyundai Siemens unit is identical to the BMW unit, except for the shape of the wiring connection plug. Can you confirm this ? Thanks ! :thumbup:
For the early 3-wire MAF e46's it was identical. (OP Noted he had a 2001 320) In the old Siemen's catalog the same part number referenced fitment for both BMW and Hyundai.

03/2003 and later E46 use the 6 pin MAF connector. The MS45 ECM gets the Intake Air temperature from the MAF, ergo the additional wiring and different connector, the earlier MS42-43 ECM uses a temp sensor in the intake manifold.

Edit - extract page 10-11 Siemens Sensors for Engine Management v 2.0
 

Attachments

·
Registered
Joined
·
5 Posts
Discussion Starter · #12 ·
Hi all, I bought a RIDEX MAF - https://www.onlinecarparts.co.uk/ridex-8053908.html
I know this Is may be frowned upon but you have to realise, I only paid £700 for the car, I don't use it that much and took a chance as the siemens was nearly £200. I wasn't 100% sure the MAF was the problem so didn't want to fork out £200 if it didn't fix the problem. Plus there's a few other problems with the car that may make me just give up with it altogether.
It may last or it may not, but for less than £30 I took a punt and its done the job for now.
Thanks all for the replies.
 

·
Kostspieliger Spaß Quandt
Joined
·
879 Posts
I hear ya - if you're on a budget why not give it a shot - 2 year warranty on it. I have personally witnessed bad non OE mafs but hopefully you get lucky with this one. What was neat about your update saying you bought the RIDEX MAF is the seller you used in the UK says this MAF also fits a KIA
CARNIVAL I (UP) (165 PS, 08.1999 - 10.2001 MY). I never knew that.

It also lists interchange versions - never realized there were so many:
AIRTEX: 5S2603
AUTLOG: LM1014
BBT: AMS901
CARDONE: 8610054, 7410054, MAFS150, MAFS150-M, 19464-M
DELPHI: AF10185-12B1, AF10185
EBERSPÄCHER: 90.108.01
ERA: 558060, MF060
FEBI BILSTEIN: 36713
FISPA: 38.635
HELLA: 009142021, 8ET 009 142-021
HOFFER: 7516033
JOHNS: LMM 20 08-073
JP GROUP: QM635, 1493900100, 1493900109
LUCAS ELECTRICAL: FDM642
MAGNETI MARELLI: AMM19607, 213719607010
MAPCO: 42664
MEAT & DORIA: 86033
MOBILETRON: MA-B039
QUINTON HAZELL: QM635
SIDAT: 38.635
SMPE: MF21034, MF21034, EAM218-M, LMF267, LMF267, EAM218-M
SWAG: 20 93 6713
TOPRAN: 501 502
TRUCKTEC AUTOMOTIVE: 08.14.005
VDO: 5WK9605, 5WK96050Z
VEMO: V20-72-0001


Edit: P.s. this must've been your question:

Car: BMW 3 Coupe (E46) 320 Ci (01.2000 - 05.2006)
Hi after searching for a direct replacement for my BMW maf sensor. (Siemens 5wk9605) I came across this much cheaper ridex one. My question is, will this part really do the job? I get its not a direct replacement in terms of make, but will it just plug and play and work the same? Regards Steven.
 
1 - 13 of 13 Posts
Top