its likely to be a high resistance in the harness connector.
if you disconnected the pins this is often enough to wipe the copper clean enough to get a consistent connection
if a code is set, it can be the sensors...or its signal is temporary dropping out, due to bad wiring
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'96 4.0 Sport 375k+
'96 Limited 263k (unreg spare)
'96 Sport 335k (got smashed, farmtruck)
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