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Bluetec MAP/Boost Sensor Location?

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Old Nov 23, 2015 | 01:16 AM
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'13 E350 Bluetec
Bluetec MAP/Boost Sensor Location?

Hey folks,

Grabbed my first Bluetec (2013) last month and bought a chip for it a few weeks back--however, being new to diesels as a whole, installation has been a challenge.

While I was able to find the common rail power plug, I cannot find the MAP/boost sensor to save my life. I've popped the hood 3 different times to find it and RaceChip's support is pretty useless (they claim on a US Bluetec it should be near the passenger side air duct at the front of the engine compartment, not finding anything that remotely looks like the two bolts+round cover for the sensor looking down into the front of the engine), so I figured I'd swallow my pride and ask if anybody with one could give me a good clear shot and guidance.

After googling for easily two hours, I found tons of pictures of the sensor in Google, a couple dead-end threads on mbworld and this video, which looks very similar to my E350:


But apparently this is actually not the MAP sensor--it's apparently some other airflow sensor? Seems to be the only thing in my engine compartment that even remotely looks like the part photos online, though...

Thanks

Last edited by bluetecnub; Nov 23, 2015 at 01:20 AM.
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Old Nov 23, 2015 | 08:24 PM
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'13 E350 Bluetec
Any ideas? bump
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Old Nov 23, 2015 | 08:35 PM
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Originally Posted by bluetecnub
...But apparently this is actually not the MAP sensor--it's apparently some other airflow sensor?.....
MAP/MAF are airflow sensors.
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Old Nov 23, 2015 | 08:58 PM
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'13 E350 Bluetec
Originally Posted by mleskovar
MAP/MAF are airflow sensors.
Yeah. I'm trying to find the *location* of the MAP sensor itself. The location in the video is apparently not it.
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Old Nov 23, 2015 | 09:07 PM
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Originally Posted by bluetecnub
Yeah. I'm trying to find the *location* of the MAP sensor itself. The location in the video is apparently not it.
I'm saying I believe that IS it. Take it out and look at it.....does it look like a MAF?
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Old Nov 26, 2015 | 02:12 PM
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Wouldn't a MAF be located in the air intake tract prior to the turbo (hot wire/vane) and a MAP be located after the turbo but prior to the throttle body? Say YES.
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Old Nov 26, 2015 | 02:45 PM
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0051535028 “Sender Unit” = Manifold Absolute Pressure (MAP) Sensor
Attached Thumbnails Bluetec MAP/Boost Sensor Location?-capture.jpg  
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