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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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  #1  
Old 05-19-2013, 08:46 AM
sshoemaker sshoemaker is offline
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Replaced MAF Sensor, now transmission light on

I just replaced the MAF Sensor on my 2004 X3 3.0 liter since a mechanic told me that was what was making the SEL stay on. Finally, I did it. And, what happened? Now the transmission light is on and the transmission is shifting and jerking violently. What is wrong? I need help from someone? It was very easy to replace the MAF and I was able to complete the task in less than 10 minutes being very careful when I did so. Any thoughts?
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  #2  
Old 05-19-2013, 11:22 AM
sshoemaker sshoemaker is offline
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Can anyone Help with this? Anyone know what to do next? Put the old MAF back on? I can handle the light being on but not the transmission jerking around.
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  #3  
Old 05-19-2013, 11:59 AM
Grabby544 Grabby544 is offline
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I'd double check your intake system, perhaps a torn boot?
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  #4  
Old 05-19-2013, 12:17 PM
sshoemaker sshoemaker is offline
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Okay. I will check. The boot where the MAF Sensor goes in looks fine but maybe at the other end there is a problem????
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  #5  
Old 05-19-2013, 12:23 PM
sshoemaker sshoemaker is offline
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The think that is puzzling though, I put the old MAF back on and the car runs fine. So, why would the new one make the transmission light come on and cause the transmission to jerk and buck, etc.? The part is exactly the same so I know I have the right part. It makes me think this isn't the problem.
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  #6  
Old 05-19-2013, 01:14 PM
Grabby544 Grabby544 is offline
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Re: Replaced MAF Sensor, now transmission light on

I don't think its the maf. I think its the plumbing

Sent from my ADR6350 using BimmerApp mobile app
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  #7  
Old 05-05-2014, 06:32 PM
dmartenn dmartenn is offline
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i have the same problem today.

Quote:
Originally Posted by sshoemaker View Post
I just replaced the MAF Sensor on my 2004 X3 3.0 liter since a mechanic told me that was what was making the SEL stay on. Finally, I did it. And, what happened? Now the transmission light is on and the transmission is shifting and jerking violently. What is wrong? I need help from someone? It was very easy to replace the MAF and I was able to complete the task in less than 10 minutes being very careful when I did so. Any thoughts?
:confused:
I did the same operation today and now I have a jerking trans too
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  #8  
Old 05-05-2014, 07:12 PM
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mlukas161 mlukas161 is online now
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What brand MAF sensors are you using? Genuine bmw? Or aftermarket?
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  #9  
Old 05-06-2014, 04:33 AM
dmartenn dmartenn is offline
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replaced MAF sensor

ULTRAPOWER Part # MF21168***Remanufactured Air Mass Sensor; REMAN; FOR ENGINE MANAGEMENT[
I ordered this part from Rock Car Parts. [/B]
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  #10  
Old 05-06-2014, 05:44 AM
swampX3 swampX3 is online now
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Reset ????

have you tried the 30 secs reset procedure

ignition on with engine NOT running
hold accelerator pedal flat to floor for 30 secs
restart engine

there is a definite logic link between maf and transmission that can sometimes be reset this way
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  #11  
Old 05-06-2014, 08:45 AM
timarnold timarnold is offline
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There are a lot of posts on the E39 & E46 Forums about aftermarket MAFs being problematic. The prevaling recommendation is to stick to OEM on these.
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  #12  
Old 05-06-2014, 09:12 AM
dmartenn dmartenn is offline
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30 sec reset didn't help. Ty
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  #13  
Old 05-06-2014, 11:10 AM
dmartenn dmartenn is offline
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Good news. Cleaned my old maf sensor w some CRC maf senor spray cleaner. Took out the new one from rock car parts and put the old one back in. Reset w diagnostic gizmo. X3 is running fine now. No jerking. No warning lights. Guess sometimes those reman parts just don't do right.
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  #14  
Old 05-06-2014, 11:11 AM
dmartenn dmartenn is offline
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Location: alabama
 
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Good news. Cleaned my old maf sensor w some CRC maf senor spray cleaner. Took out the new one from rock car parts and put the old one back in. Reset w diagnostic gizmo. X3 is running fine now. No jerking. No warning lights. Guess sometimes those reman parts just don't do right. Thanks to all u guys!!!
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  #15  
Old 05-06-2014, 02:31 PM
swampX3 swampX3 is online now
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good link for you

sweet home Alabama !
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