95esoort no load hesitation

i have bucking intermittent hesitation at a noload highway speed.

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wrote:

Had the same problem on my 94 pontiac.Intermittent open circuit in O2 sensor. Found it with the scanner - when missbehaving it was stuck on 0.444 volts (the bias on GM OBD1) Replaced it, and the problem is GONE.
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