Gm 3 Bar Map Sensor Voltage Chart

So in order to accomplish this the output voltage must be scaled accordingly.

Gm 3 bar map sensor voltage chart.

It is possible that detroit is. Now at a slightly higher elevation reading flickers between 1 78 and 1 79v giving a reading of 0 9 psig engine load with the car off. A 2 bar map sensor will read up to 2 bars of atmospheric pressure difference and a 3 bar will read up to 3. Formula for the gm 3 bar map sensor is v 8 94 14 53 i have no idea why it s 14 53 and not 14 696 rounds up to 14 7 but it works out on gm s chart every time.

This means the output voltage of a 2 bar map sensor with the key. 039 460 883 876 2 bar. Why doesn t it give me the full 3 bar of resolution. I m betting either a bad map sensor or the wrong part altogether.

Still not 3 bar but a little better. So by supplying a higher or lower voltage the return signal is varied by the same amount. I have the gm 12592525 map sensor and have it selected as my map sensor. But all of these sensors must still operate within the same voltage output specs as a 1 bar.

Linear output based in this info chart shown is for a 2 bar scaling to 29 4 psi. 3 digit numbers for identification. If i choose the holley it goes to 31 2 psi. I have looked around to try and find the calibration data for the gm so that i can choose custom 3 bar and get it to work up to 31 2.

Gm map sensor identification how to identify a gm map sensor. Formula for the gm 3 bar map sensor is v 8 94 14 53 i have no idea why it s 14 53 and not 14 696 rounds up to 14 7 but it works out on gm s chart every time. This is the opposite of what should really happen. Apparently it s a gm cheverolet performance 3 bar sensor which should have an approx.

886 012 539 609 701 3 bar. On my fuel table it only goes up to 26 8 psi. It shows right on the chart top part idle to be to the right side high vacuum low map voltage and left to be wot low vacuum high map voltage. 749 861 the logic module uses the manifold absolute pressure map sensor to determine the absolute pressure not the relative to atmospheric pressure of the air inside the intake manifold and the atmosphere barometric pressure.