I am trying to find a GM 1-Bar MAP Sensor Chart for calibration purposes. For example, I need to know what voltage the sensor should out-put with the complete vacuum range of 0-30" hg.
I'm not sure if these figures differ from engine to engine, car to car, but if so, the engine in question is a 2.8L MPFI from an 88 Chevy Cavalier...
From a Helms service manual:
Altitude Voltage
-------- ------- below 1,000 3.8-5.5v
1,000-2,000 3.6-5.3v 2,000-3,000 3.5-5.3v 3,000-4,000 3.3-5.3v 4,000-5,000 3.2-4.8v 5,000-6,000 3.0-4.6v 6,000-7,000 2.9-4.5v 7,000-8,000 2.8-4.3v 8,000-9,000 2.6-4.2v 9,000-10,000 2.5-4.0vApply 10" of vacuum to the sensor, the drop 1.2-2.3v, and should follow the vacuum immediately.
JazzMan
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