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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 05-02-2014, 07:32 PM   #1
Callmetofo
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Join Date: Aug 2013
Location: San Francisco
Posts: 43
My Ride: 2001 e46ci
Maf same as hyundai?

Hello everyone!
My Car info:
2001 325ci 5spd

Disclaimer: I'm in college, and my bmw has been Breaking My Wallet

So i was told by my local shop that my MAF was faulty and that I need to replace it, and they quoted me $450 for parts. So decided to do some research on some alternative ways to fix my problem for cheaper. I am reviving an old thread because it's old and i wanted to see if more people have recently has done this.

http://forum.e46fanatics.com/showthread.php?t=783659

Here is a ebay link of the hyundai MAF that people say works for most e46s

http://www.ebay.com/itm/99-01-Hyunda...=mtr#vi-ilComp

Has anyone tried these before!?
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Old 05-02-2014, 07:44 PM   #2
Cavi Mike
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Quote:
Originally Posted by Callmetofo View Post
Has anyone tried these before!?
Did you even read the first post of the thread you linked?
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Old 05-02-2014, 07:47 PM   #3
lszlszx
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Unplug your MAF sensor. Is it a 3 pin connector?
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Old 05-02-2014, 08:13 PM   #4
JapanRot325ci
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is it me or for the past two weeks most thread was about MAF and VGC...oh man
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Old 05-02-2014, 09:07 PM   #5
scarede46er
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Yes the Hyundai one will work fine for your car.
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Old 05-02-2014, 09:16 PM   #6
jfoj
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Before you knee jerk on the MAF, what is the problem with the car?

What trouble codes are present?

What are the Fuel Trim values?

Do yourself a favor and do some more troubleshooting and investigating before you consider the MAF. If you do swap the MAF, keep the original one, trust me on this.

Suggest you get your own OBDII scan tool, $35 or less for a smart phone App and interface - http://forum.e46fanatics.com/showthread.php?t=967204

Also suggest you read the links below in my signature.

If I have $5 for every MAF replaced when it was not needed, I would be a rich man.

Every car I own has the original MAF still installed, never cleaned. Some over 11 years old, some with over 110k miles.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299

Last edited by jfoj; 05-02-2014 at 09:26 PM.
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Old 05-05-2014, 02:14 PM   #7
Callmetofo
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Quote:
Originally Posted by jfoj View Post
Before you knee jerk on the MAF, what is the problem with the car?

What trouble codes are present?

What are the Fuel Trim values?

Do yourself a favor and do some more troubleshooting and investigating before you consider the MAF. If you do swap the MAF, keep the original one, trust me on this.

Suggest you get your own OBDII scan tool, $35 or less for a smart phone App and interface - http://forum.e46fanatics.com/showthread.php?t=967204

Also suggest you read the links below in my signature.

If I have $5 for every MAF replaced when it was not needed, I would be a rich man.

Every car I own has the original MAF still installed, never cleaned. Some over 11 years old, some with over 110k miles.


Hey jfoj
My codes are
P0171
P0174
P0344

A few weeks ago i removed mu disa unit and used sealer where the O ring should be,(this before i read your posts)

Todays ago i unplugged my MAF and my stalling at neutral has stopped. I did this not to fix it but to see if my maf is an issue...When i cruising in neutral my rpm stays at about 1.25rpm however at complete stop im more around .8rpm. What would you think this symptom is, in relation to my MAF and lean codes?

Thanks for your time
Jon


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Old 05-05-2014, 02:52 PM   #8
jfoj
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Quote:
Originally Posted by Callmetofo View Post
Hey jfoj
My codes are
P0171
P0174
P0344

A few weeks ago i removed mu disa unit and used sealer where the O ring should be,(this before i read your posts)

Todays ago i unplugged my MAF and my stalling at neutral has stopped. I did this not to fix it but to see if my maf is an issue...When i cruising in neutral my rpm stays at about 1.25rpm however at complete stop im more around .8rpm. What would you think this symptom is, in relation to my MAF and lean codes?

Thanks for your time
Jon
P0171 & P0174 are lean codes. If you get these at idle, likely vacuum leak issue. Smoke test if you cannot find the leaks. Make sure you check crankcase and intake air path.

If the lean codes are while cruising 40-60 MPH, then likely the MAF is under reporting and it bad/fake/counterfeit/wrong.

P0344 is a questionable intake Camshaft Position Sensor code.

Suggest clearing codes and see if P0344 code back quickly.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 05-05-2014, 06:39 PM   #9
Knight
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For future reference, is there a Siemens/Hyundai equivalent for the 330 MAF sensor?

Last edited by Knight; 05-05-2014 at 06:39 PM.
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Old 05-05-2014, 08:41 PM   #10
jfoj
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Quote:
Originally Posted by HLG600 View Post
For future reference, is there a Siemens/Hyundai equivalent for the 330 MAF sensor?
Do not think there is an equivalent or reasonable option for the later model 330 with the 5/6 wire MAF. History says you BETTER stick with a BMW dealer or at least a "known" good supplier that sells Siemens "real" MAF's.

The 330's seem VERY temperamental and need the proper MAF otherwise you WILL be sorry.

Best thing to do is benchmark your current MAF at idle and under a specific cruising conditions. Note the MAF reading, RPM, temps and fuel trims. Then you can watch for changes in the future.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 05-05-2014, 09:01 PM   #11
Knight
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Quote:
Originally Posted by jfoj View Post
Do not think there is an equivalent or reasonable option for the later model 330 with the 5/6 wire MAF. History says you BETTER stick with a BMW dealer or at least a "known" good supplier that sells Siemens "real" MAF's.

The 330's seem VERY temperamental and need the proper MAF otherwise you WILL be sorry.

Best thing to do is benchmark your current MAF at idle and under a specific cruising conditions. Note the MAF reading, RPM, temps and fuel trims. Then you can watch for changes in the future.
Good to know, thank you. I need to start monitoring my fuel trims more closely.
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Old 05-07-2014, 02:35 PM   #12
Callmetofo
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Quote:
Originally Posted by lszlszx View Post
Unplug your MAF sensor. Is it a 3 pin connector?
Yes it is!
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