Coolant light on intermittently
 

Well, I've had a good run with no real issues, but I have had some issues with the radiator coolant light coming on. Presumably because the coolant levels are low. Wrong! The levels are fine. I've checked the sensor at the bottom of the tank, which has come out before ever since I removed the tank when I did the suspension (I think it was during the shocks). So, the lights been coming on, and the fan at the front has been running a little strongly, and staying on for a bit after I've turned the car off (never longer than a minute or two).

This is a bit of an issue because I have a horrid feeling that it may potentially be related to some issues I've been having with the air conditioning and the compressor refusing to turn on at low speeds, or when not moving.

The sensor itself is probably bad (in contrast to a loose connection).

That's not unusual.