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C32 mass air sensor

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Old 03-07-2007 | 12:19 PM
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2003 AMG C32
C32 mass air sensor

2003 C32, 40K miles. Non MB dealer diagnosed bad mass air sensor. Car has no power, especially at highway speeds. Any good sources to purchase one without going to the dealer (who wants $500)?

Thanks
Old 03-07-2007 | 01:51 PM
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You can buy this at Pep Boys for about $7.00 - http://www.crcindustries.com/hd/cont...x?PN=05110&S=Y
Old 03-07-2007 | 11:00 PM
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cheaper than a benz...
you can try that mechanic in a bottle...and see if it works..if it doesnt..prepare to shuck out the money for an air mass..i would also replace the air filter(s) as well
Old 03-08-2007 | 07:44 AM
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Originally Posted by fixbenz
you can try that mechanic in a bottle...
I can speak from experience...it works.
Old 03-11-2007 | 11:34 PM
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A bad MAF would normally throw a code and light the CEL. Any change in fuel consumption or is the car running hot? This could be a plugged cat or pre-cat which should be covered under warranty for like 80K miles. Here are some links to some possible soures for an aftermarket MAF sensor:

http://www.slk32.com/pages/gotopages/links.html
Old 04-08-2007 | 10:35 PM
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AMG V6 and V8's don't have AMM/MAF sensors. They have MAP sensors.

The most likely cause would be a failed intercooler circulation pump.
Old 04-09-2007 | 09:17 AM
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Originally Posted by Ausmbtech
AMG V6 and V8's don't have AMM/MAF sensors.
.......you're kidding...........right ?
Old 04-09-2007 | 09:21 PM
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Well he may be half right, a C32 DOES have a MAF. Without a check engine light, it is probably not the problem. Sounds like the supercharger clutch is not engaging, which may be caused by the coolant circulation pump that was mentioned.
Old 04-09-2007 | 10:40 PM
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Originally Posted by MBTECH2003
...a C32 DOES have a MAF...
Okay now, both you and C43AMG have made many helpful posts to MBW.
The 112.960(1) in the C32 signals its Bosch ME 2.8.1 via speed density, not from a mass airflow sensor. Kindly post an EPC scan of our MAF's location if you believe otherwise.

Be that as it may, his loss of power is most likely from a faulty intercooler fluid pump.

Last edited by splinter; 04-09-2007 at 10:53 PM.
Old 04-10-2007 | 01:18 AM
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Correct. None of the Kompressor V-6's or V-8's have an MAF sensor. That's mainly why not too many of them drivability problems. I'd like to see the dealer try to install a new one on the car.
Old 04-10-2007 | 08:14 AM
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Originally Posted by Zewerr
Correct. None of the Kompressor V-6's or V-8's have an MAF sensor. That's mainly why not too many of them drivability problems. I'd like to see the dealer try to install a new one on the car.
The statement made was "AMG V6 & V8's don't have AMM/MAF sensors ".The first mass produced AMG cars made available in the U.S. ( C36- I6 , C43-V8 )
both have MAF's.
Attached Thumbnails C32 mass air sensor-c43-mass-air-sensor.jpg  

Last edited by C43AMG; 04-10-2007 at 08:19 AM.
Old 04-10-2007 | 10:16 PM
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"Kompressor" V-6's and V-8's. Any forced induction V-6 or V-8 are speed density. I know C36's and C43's do have MAF sensors.
Old 04-14-2007 | 11:36 PM
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Yep, I was mistaken, it should've written Kompressor V6 & V8's dont have a MAF

AMG inline 6, and non kompressor V8 have MAF sensors

the problems with late night posting.............
Old 04-16-2007 | 11:06 PM
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Originally Posted by John Goodlad
Okay now, both you and C43AMG have made many helpful posts to MBW.
The 112.960(1) in the C32 signals its Bosch ME 2.8.1 via speed density, not from a mass airflow sensor. Kindly post an EPC scan of our MAF's location if you believe otherwise.

Be that as it may, his loss of power is most likely from a faulty intercooler fluid pump.
read this post, ignore the rest.

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