1997 Dodge Neon Upstream o2 sensor bad and overheating

[quote:ffc73f0af5="NeonSuck"]1997 Dodge Neon 4 cyl Two Wheel Drive Automatic 159000 miles
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My 1997 dodge neon started overheating about 2 weeks ago and the engine service light came on. I got it diagnosed and the upstream o2 sensor on the catalytic converter is stuck in the middle so it doesnt work. The radiator doesnt have a crack in it but it puts out alot of steam. The car gets really hot if i drive around to long so i have to pull over and put antifreeze in it. The head gasket is not blown and i changed the thermostat and the problem still presists. I was wondering if the o2 sensor going bad could cause this type of overheating?[/quote:ffc73f0af5]

Are you loosing coolant if so check / look at the head gasket
coolant system pressure check always help
check water pump and radiator fan
you need an o2 sensor