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MAP sensor testing

brus brother
in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX

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I have posted before about a engine pinging problem with my 2000 Legacy GT Auto using 87 octane as suggested in owner's manual. The pinging occurs when ambient temperatures get over 60 degrees F. The car seems to run fine at cooler temperatures.

The problem has existed from day one.

I have tried SeaFoam top engine cleaner numerous times, throttle body cleaner, BK in the gas tank, new air and gas filter, air freshener hanging from the mirror and voodoo.

Reading a recent post and link here on MAP sensors I am wondering if a faulty or out of spec MAP sensor could be the culprit.

Is there a way of testing this sensor and are the symptoms consistent with a faulty sensor?

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