found it:
http://rockledge.home.comcast.net/~rockledge/RangerPictureGallery/DPFE-Voltage-Test.html
for you guy information.

If your car start feeling hesitating, jumping, pulling, EGR system is where
to check and DPFE sensor is first thing to go.

DPFE is just a differential pressure sensor, with V+, GND, 0-5V output!
nothing else inside! It is flow speed meter by throttling. Selling at $130,
by car people. is MCU people can make a difference?

I think it is possilbe to using a lower range pressure sensor, to bring
higher burning temperature for higher
gasmilage and more power. And only if higher buring temperature gets such
benifits.



----- Original Message ----- 
From: "microsoftwarecontrol" <microsoftwarecontrol@yahoo.ca>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Sent: Saturday, November 01, 2008 2:25 PM
Subject: [OT] car EGR DPFE sensor, an alternative.


> It is common, for dead DPFE sensor brings you tons bad feeling.
> One such small plastic case, is sold at $130.
>
> What is included? Just a two ports differential pressure sensor.
>
> Any one tried to buy a sensor to replace dead car sensor?
> What is its specification? Who is possible pressure sensor supplier?
>
>
>
>
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