Mass air flow sensor

WiLD · 11-01-2012, 04:08 PM

Is there a DIY for cleaning the mass air flow sensor? I've searched YouTube up an down and it's only showing for the e46 no e92. Let me know if anyone can help. This is the first step in solving my problem. Thank you!

joec500 · 11-01-2012, 04:21 PM

Because we don't have one

WiLD · 11-01-2012, 04:29 PM

well thats just dandy...I was hoping for an easy fix...guess not

joec500 · 11-01-2012, 04:50 PM

Quote:

Originally Posted by WiLD

well thats just dandy...I was hoping for an easy fix...guess not

I am assuming misfires?

bigdnno98 · 11-01-2012, 05:16 PM

We do have a MAP sensor and it has helped a few people's problems.

WiLD · 11-01-2012, 06:10 PM

Quote:

Originally Posted by joec500

I am assuming misfires?

yes cylinder 2 and 6 misfires...MAP? is there anyway to clean it or do I have to replace it?

enrita · 11-01-2012, 06:11 PM

no need to clean that, is not a MAF

e9012345 · 11-01-2012, 06:23 PM

Can anyone enlighten me to the differences in the MAF vs MAP.

Having a MAF is a huge pain in the ass for the delicate nature of it and the insane replacement costs.

WiLD · 11-01-2012, 06:34 PM

Well is there a way to clean it or do I need to take it to the shop? Come on guys I could use your help lol

WiLD · 11-01-2012, 07:01 PM

well I was going to rip into the engine and swap packs around...until I dropped the damn socket. Just my luck...ill be taking it to the shop tomorrow. God hates me

bigdnno98 · 11-01-2012, 07:05 PM

Um what socket lol. You don't need a socket to swap coils.

WiLD · 11-01-2012, 07:16 PM

Quote:

Originally Posted by bigdnno98

Um what socket lol. You don't need a socket to swap coils.

Taking off the shroud above the engine cover to get to the back bolt that hold the cover on...those things were buried! Is there no Haynes manual or anything for our car? I looked everywhere today and nobody ha one.

bigdnno98 · 11-01-2012, 07:25 PM

I think there's a chilton but there are so many great DIYs on here that I haven't needed one.

bigdnno98 · 11-01-2012, 07:26 PM

I posted the BMW diagnostic tree for misfires on the other forum. Dame steps the techs are supposed to use. Very helpful.

ajm8127 · 11-01-2012, 07:54 PM

For the record, MAF stand for "mass air flow" and measures the mass of the air entering the engine.

MAP stands for "manifold absolute pressure" and measures the pressure inside the intake manifold. Using a temperature sensor, the density of the air can be calculated and with the pressure being known, the mass of the air entering the engine can be calculated.

11-01-2012, 04:08 PM	#1
WiLD Lieutenant 26 Rep 470 Posts Drives: your girl WiLD Join Date: Aug 2012 Location: Chucktown iTrader: (4)	Mass air flow sensor Is there a DIY for cleaning the mass air flow sensor? I've searched YouTube up an down and it's only showing for the e46 no e92. Let me know if anyone can help. This is the first step in solving my problem. Thank you! __________________ \ 07' e92 335i / BSM** \ Saddle Brown / Remus \ JB4 / OSS \ LCI / M3 Rep \ 20" Vossen CV3 / H&R Sport \ QI45 /**
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11-01-2012, 04:21 PM	#2
joec500 Brigadier General 125 Rep 3,004 Posts Drives: it has 4 wheels Join Date: Jul 2008 Location: San Francisco iTrader: (10)	Because we don't have one __________________ 2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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11-01-2012, 04:29 PM	#3
WiLD Lieutenant 26 Rep 470 Posts Drives: your girl WiLD Join Date: Aug 2012 Location: Chucktown iTrader: (4)	well thats just dandy...I was hoping for an easy fix...guess not __________________ \ 07' e92 335i / BSM** \ Saddle Brown / Remus \ JB4 / OSS \ LCI / M3 Rep \ 20" Vossen CV3 / H&R Sport \ QI45 /**
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11-01-2012, 05:16 PM	#5
bigdnno98 Real Car Enthusiast 288 Rep 2,081 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	We do have a MAP sensor and it has helped a few people's problems.
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11-01-2012, 06:11 PM	#7
enrita Major General 161 Rep 7,377 Posts Drives: 335i - Big turbos Join Date: Sep 2008 Location: Italian in Sweden iTrader: (0)	no need to clean that, is not a MAF __________________ 07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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11-01-2012, 06:23 PM	#8
e9012345 Lieutenant 29 Rep 430 Posts Drives: e90 Join Date: Feb 2012 Location: North York iTrader: (0)	Can anyone enlighten me to the differences in the MAF vs MAP. Having a MAF is a huge pain in the ass for the delicate nature of it and the insane replacement costs.
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11-01-2012, 06:34 PM	#9
WiLD Lieutenant 26 Rep 470 Posts Drives: your girl WiLD Join Date: Aug 2012 Location: Chucktown iTrader: (4)	Well is there a way to clean it or do I need to take it to the shop? Come on guys I could use your help lol __________________ \ 07' e92 335i / BSM** \ Saddle Brown / Remus \ JB4 / OSS \ LCI / M3 Rep \ 20" Vossen CV3 / H&R Sport \ QI45 /**
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11-01-2012, 07:01 PM	#10
WiLD Lieutenant 26 Rep 470 Posts Drives: your girl WiLD Join Date: Aug 2012 Location: Chucktown iTrader: (4)	well I was going to rip into the engine and swap packs around...until I dropped the damn socket. Just my luck...ill be taking it to the shop tomorrow. God hates me __________________ \ 07' e92 335i / BSM** \ Saddle Brown / Remus \ JB4 / OSS \ LCI / M3 Rep \ 20" Vossen CV3 / H&R Sport \ QI45 /**
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11-01-2012, 07:05 PM	#11
bigdnno98 Real Car Enthusiast 288 Rep 2,081 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	Um what socket lol. You don't need a socket to swap coils.
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11-01-2012, 07:25 PM	#13
bigdnno98 Real Car Enthusiast 288 Rep 2,081 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	I think there's a chilton but there are so many great DIYs on here that I haven't needed one.
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11-01-2012, 07:26 PM	#14
bigdnno98 Real Car Enthusiast 288 Rep 2,081 Posts Drives: 340xi Join Date: Jul 2011 Location: Germany iTrader: (8)	I posted the BMW diagnostic tree for misfires on the other forum. Dame steps the techs are supposed to use. Very helpful.
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11-01-2012, 07:54 PM	#15
ajm8127 Private 0 Rep 80 Posts Drives: '07 335i Join Date: Aug 2012 Location: Pittsburgh iTrader: (0)	For the record, MAF stand for "mass air flow" and measures the mass of the air entering the engine. MAP stands for "manifold absolute pressure" and measures the pressure inside the intake manifold. Using a temperature sensor, the density of the air can be calculated and with the pressure being known, the mass of the air entering the engine can be calculated.
	Appreciate 0 Quote