I just replaced the O2 sensor on my van with a bosch replacement from
autozone. The old sensor was intermittant. When the old sensor was working,
I would measure about .4 volts with the engine at normal temperature. This
new sensor starts out at .5 volts cold, climbs towards 1 volt, and then
begins to flip flop between .2 and .9 volts at about a one second rate. Is
this normal? BTW, it's a 1992 5.2L.
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