MAP Sensor

[ducharme at eiss1.psf.ge.com]

I just checked out a GM MAP sensor for my B&S system, and from a starting
point of nothing, this is what I found out with a voltmeter and power 
supply.

     |-----------------|
     |      -----      |
     |-----(o o o)-----|
            -----
            1 2 3

		1 - Ground
    		2 - Output
		3 - V+ (+5VDC)

Output appears linear from 0V at full vacuum to +5VDC at 1Atm.  I suspect
the internals are a Motorola MPX51xx transducer or similar.  It works, so
I'm not going to disembowel it.  The price was right (free) came off a 
mid-80's Olds midsize 4-banger.

Cliff Ducharme