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Re: Vacuum below zero
Posted to Technical Theory Forum on 5/18/2020

[...trimmed text...]

Right on, Victor.

At 8,000 feet on a day with a baro of 22.6" Hg, the key-on, engine-off voltage reading on a MAP is 3.58 volts on GM products, 138 Hz on Ford products. But I could never duplicate ... Login to read more.