X-Mozilla-Keys:                                                                                 
Ernesto Sanchez wrote:

Mark Doble wrote:

Anyone know where i can find a manifold pressure sensor for a lycoming
320/360?  I'm rolling my own engine monitoring system....

I have heard it referenced as a GM Map sensor?

That's it.  The MAP (Manifold Absolute Pressure) sensor.  A solid
state absolute pressure transducer.  There are two versions.  One
version is for normally aspirated engines (P/N 16017460) and a 1 bar
unit for turbocharged engines (P/N 16009886).  Rumor has it that GM
briefly made a 2 bar version for high performance engines but the
part number I was given (P/N 16036394) has never been acknowledged
by GM as valid.  Numbers given are GM part numbers.  The sensor
should cost in the range of $15 at a car parts place.

If you hold the sensor so the connections face you and the pressure
port is at the bottom, the three electrical connections are:  Top -
ground, Middle - signal, Bottom - V+ (12 volts, as I recall).
Output signal is 0-5 volts across the rated pressure span.

John

 
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