Close
Car Questions
RepairPal is your advocate for car care advice and guidance

Low Coolant Sensor

(2002 Chevrolet Monte Carlo)
in Lebanon, OH on July 26, 2009
My Low Coolant Light stays on and there is plenty of fluid in it where is the sensor located?
Displaying 3 answers & 2 comments
Popular Answer
There is a Chevy Service Bulletin about this problem # 04060207 regarding the use of non approved cooling system additives or the possibility of oil in the cooling system being the cause of the problem. I don't have a location for the switch, It has to be in the coolant reservoir or radiator but the color of the wires on the switch are black/white and the second wire is yellow/black.
on October 20, 2010
my low coolant light remains on we didnt have the money for coolant, so we used just water and it does look like there is oil at the bottoem of the reservoir, could this be the cause for the light remaining on?
on April 12, 2011
If you do not have the money for coolant, you probably won't have the money for an engine rebuild.

If you are seeing oil in the reservoir then you have a blown head gasket or cracked head. Either way your looking at least a grand or two to rebuild the motor. Or if it's been going on a long time you will eventually have yourself a 2,000lb paper weight on your hands!
on October 16, 2009
I had to clean out my sensor due to oil in my coolant, which i am still having problems with occasionally. its located on the passanger side of the rad, about half way down. when you pull it out, plug the hole with something right away.. you'll lose lots of coolant.
on April 09, 2010
95 mercury cougar 3.8 where is the low coolent sensor located
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Car may start fine and all of a sudden it doesn't start. Can wait a while and it will start. Random, but light comes ...
Will be driving down the road and temp is about halfway then all of a sudden engine hot message comes on and gauge dr...
Didn't find what you were looking for?