sensors acting up.

[TAallday]

i had to take my 96 z into the shop about 1 week ago. it had an overheating problem. turn out they had to replace my radiator cap, and my thermo was reading and stuck. had my radiator flushed and refilled. now my coolant light on my dash keeps going on and off. the temp is regular though and coolant was full, i even added more. maybe they left a sensor unplugged or damaged it. anyway i can look at it or try to fix it? last resort is taking it back but i kinda wanna try to fix it myself and not look like a little girl in front of my female mechanic... oh it has no leaks either. HELP!

[Knight]

Check the sensor on the drivers side of the engine by the front of the exhaust manifold - make sure it's fully plugged in and not broken.