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I used the generic O2 sensor removal tool found at AutoZone (I think). It's an english size even. I used PB Blaster (also found at the Auto store) to spray on the base. This was on an NA - but they were the original sensors as far as I know ('90 model). I basically just sprayed the base of the sensor with the PB Blaster, let it sit for about an hour (pass side), then used a 1/2 ratchet and a couple extensions (after removing the battery and low pressure AC fitting - R134a conversion ;-) - the sensor came loose quite easily. The driver side didn't require removal of anything, but it was very tight down there. The PB Blaster was only on for about 15 minutes for that one (the engine was still a little warm). Again - it came loose easily. Sorry you had so much trouble. -Stacy
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1990 Glacier White Pearl Stock N/A Apex, NC ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "Go THAT way... REALLY fast... If something gets in your way... TURN!" Charles DeMar, 'Better Off Dead'

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