Maf sensor not working??

Mflara420 · 01-15-2012, 05:46 PM

Hey I was checking my Maf sensor and when I disconnect it the rpms drop a little but the strange thing its when I plug it back on it stalls. Can anyone help me out

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schenk829 · 01-15-2012, 06:07 PM

That should mean your MAF is working. If you disconnected and reconnected it with NOTHING happening that showing that it isn't sensing therefore not working.

Mflara420 · 01-16-2012, 12:42 AM

Thanks.... because I juxt bough this Maf sensor (not oem) and when I got it, it dont have a serial number where my oem hast it.... and I'm getting some lean codes

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Mflara420 · 01-18-2012, 12:27 AM

And how do u know If its trowing codes..... Is there any test I can do to diagnose it?????

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Mflara420 · 01-19-2012, 12:00 PM

Anybody??

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jasonbimmer · 01-19-2012, 12:05 PM

Quote:

Originally Posted by Mflara420

And how do u know If its trowing codes..... Is there any test I can do to diagnose it?????

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are you getting CEL?

Mflara420 · 01-21-2012, 12:45 AM

No...... just a service engine soon

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BMW BEATS THE REST · 01-21-2012, 01:00 AM

have you checked your oil seperator and intake boots for leaks? These will cause lean faults also, and are very common on m54 engines especially.

Mflara420 · 01-21-2012, 01:35 AM

U want to do that but its snowing and can't do anything outside

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01-15-2012, 05:46 PM	#1
Mflara420 Registered User Join Date: Feb 2011 Location: Elgin Posts: 90 My Ride: 2002 bmw 330xi View My Garage	Maf sensor not working?? Hey I was checking my Maf sensor and when I disconnect it the rpms drop a little but the strange thing its when I plug it back on it stalls. Can anyone help me out Sent from my Eris using Bimmer

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01-15-2012, 06:07 PM	#2
schenk829 Registered User Join Date: Jan 2012 Location: Gettysburg, PA Posts: 1 My Ride: 2001 BMW 330CI View My Garage	That should mean your MAF is working. If you disconnected and reconnected it with NOTHING happening that showing that it isn't sensing therefore not working.

01-16-2012, 12:42 AM	#3
Mflara420 Registered User Join Date: Feb 2011 Location: Elgin Posts: 90 My Ride: 2002 bmw 330xi View My Garage	Thanks.... because I juxt bough this Maf sensor (not oem) and when I got it, it dont have a serial number where my oem hast it.... and I'm getting some lean codes Sent from my Eris using Bimmer

01-18-2012, 12:27 AM	#4
Mflara420 Registered User Join Date: Feb 2011 Location: Elgin Posts: 90 My Ride: 2002 bmw 330xi View My Garage	And how do u know If its trowing codes..... Is there any test I can do to diagnose it????? Sent from my Eris using Bimmer

01-19-2012, 12:00 PM	#5
Mflara420 Registered User Join Date: Feb 2011 Location: Elgin Posts: 90 My Ride: 2002 bmw 330xi View My Garage	Anybody?? Sent from my Eris using Bimmer

01-21-2012, 12:45 AM	#7
Mflara420 Registered User Join Date: Feb 2011 Location: Elgin Posts: 90 My Ride: 2002 bmw 330xi View My Garage	No...... just a service engine soon Sent from my Eris using Bimmer

01-21-2012, 01:00 AM	#8
BMW BEATS THE REST Registered User Join Date: Jan 2012 Location: arizona Posts: 4 My Ride: m3 STEEL GRAY View My Garage	have you checked your oil seperator and intake boots for leaks? These will cause lean faults also, and are very common on m54 engines especially.

01-21-2012, 01:35 AM	#9
Mflara420 Registered User Join Date: Feb 2011 Location: Elgin Posts: 90 My Ride: 2002 bmw 330xi View My Garage	U want to do that but its snowing and can't do anything outside Sent from my Eris using Bimmer