CamaroZ28.Com Message Board - new temp sensor that is faulty???

I'm new to the forums and to 4th gen Camaros too. I just picked up a 95 Z28 6 speed from the original owner with a service history. Pretty excited and really wishing it weren't winter. It has higher mileage, but it's obviously been well taken care of.

So here's my question (and I've searched the forums and haven't found an obvious answer), haven't driven it much, but when I got it the guy I bought it from mentioned that the temp sensor was bad and hence it wasn't getting a temp reading - he gave me a new sensor to put in and even offered to do it, but I said I'd take care of it.

I got around to putting the sensor in, filled the coolant I lost doing it, took it for a spin and the gauge when up to about 240 and leveled out. So, checked my coolant level, which was fine, the upper radiator hose has flow, so I'm assuming my thermostat is fine, bled the system and didn't really get any air bubbles - so I'm kinda stumped. Could it be that the new sensor is faulty? Has anyone ever had that happen? Or is there something else, more major that I should be checking? It seems to drive fine (no smoking, etc.) other than maybe needing a tune-up (stumbles a bit under a load at real low rpms).