What does the map sensor do?

Asked by Aug 12, 2014 at 02:52 PM about the 1999 Buick LeSabre Custom

Question type: Maintenance & Repair

2 Answers

148,625

MAP is Manifold Absolute Pressure sensor. Actually lack of, measures intake manifold vacuum, density (temperature) . Altitude, ambient temperature, and other factors... MAP...02 sensor readings and MAF Mass Air Flow Sensor all send data to ECU to get proper air/fuel mix (14.6:1)

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148,625

Thanks Pepper, that click is a compliment here.

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