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Home >> Mercury >> 1987 >> Topaz LS, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> 2.3L HSC/CFI Testing >> Circuit Tests >> Test H - Map/BP Sensor

Test H - Map/BP Sensor

NOTE: Barometric pressure sensor output is digital and must be measured with MAP/BP tester.

To prevent replacement of good components, be aware that the following non-EEC related areas may be at fault: unusually high/low atmospheric barometer reading, kinked or blocked vacuum lines, engine condition (valves, vacuum leaks, valve timing, EGR valve, etc.).

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