DPFE sensor ???

Question

What is it?Where is it?What's it do?Took my 02 Town Car to the dealer witn the service engine light on &this is what they replaced.  I'm curious as to it's function.  I justbought this car & it's a lot more hi-tech that the 93 T-Bird I had.Lots of new things to learn.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Professional Shop Rat: 14,083 days in a GM plant.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Backyard Mechanic · Accepted Answer

David Starr opined in news:    I thought you LOVEd your Tbird!Differential Pressure Feedback EGR; a more accurate type of EGR system that directly monitors the pressure drop across the metering orifice. Standard EGR is a Pressure Feedback EGR system, using a pressure sensor.

Thomas Moats · Answer

Its a modified PFE. Instead of one pressure transducer there are two. One thatmonitors the exhaust pressure the other that monitors the pressure drop when theEGR valve opens. By the processor knowing what the actual exhaust pressure is itcan compare the pressure drop of the open EGR and calculate the total EGR flow.It's far more accurate than using a potentiometer to measure total EGR openingor a single pressure transducer to just look at the exhaust pressure in the EGRcircuit.

David Starr · Answer

Thanks to all that replied.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Professional Shop Rat: 14,083 days in a GM plant.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

berkshire bill · Answer

will give you a bit of knowledge.Happy modeming,Bill

DPFE sensor ???

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