Question about Cars & Trucks
Have 2000 Montana. Temps fluctuate alot and low coolant light won't go off. Plenty of coolant in radiator and reservoir.
Possible two faults. the wire to the low level sensor is broken in the plastic which is an indication of no water to complete the circuit. and the wire to the temperature sender unit is loose on the unit.
Posted on Jan 01, 2014
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Posted on Jan 02, 2017
you must drain air out of system
so when engine is warmed up, just unscrew slightly the thermo time switch which is the highest sensor and unit in cooling system besides the reservoir, until alittle air releases then when antifreeze starts coming out then retighten to specs. BE VERY CAREFUL !!!! LOOSEN VERY SLOWLY AND NOT COMPLETELY REMOVE FOR THIS CAN CAUSE BURNS. MIGHT WANT TO USE A RAG AROUND SENSOR. If this doesnt solve it then make sure you have the correct rad. cap. Also that the filling hose is not clogged as well as the little port on radiator.
Posted on Feb 19, 2009
There is a low coolant sensor down alongside the radiator. Either the wire came off or the sensor has failed. Other than the annoyance of the light being on if you keep an eye on the coolant level it will cause no harm.
Posted on Mar 28, 2010
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