Lately, I've been getting a "coolant" warning light intermittantly. Coolant level is correct - no leaks. Engine temp stays about two needle-widths below top white line. If I tap on the sensor (on reservoir) and jiggle the wires, the coolant light is off next time I start it. Anyone have experience cleaning the sensor, or must it be replaced?

 

Steve,
It sound like it is your pressure sensor - Placed close to the reservoir tank - Try to disconnect this (simply remove the connector from the sensor) and I think your problem is solved - I just replaced my sensor of the same reason.