i would place my bet on o2 sensors. a sensor can often be "lazy". you have to remember, this is an obd1 car. obd 1 is a whole lot dumber. does the coolant temp read properly on the dash?

if the temp is not reading correctly, it could be failing to go into closed loop mode. hence the raw fuel smell. you really are working blindly without a scan tool that has live data mode.

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