Coolant sensor on a saturn, can you show location?
well there are 2 coolant sensors,,,one is the coolant level sensor which is internal to the coolant resivor,,but i think you are talking about the infamous engine coolant temp sensor,,,,ok pop your hood you will see the cam cover that says saturn on it,,,,thats the top of the engine,,,ok,,,then on the lower right side of that you will see the upper radiator hose,,,and the EGR valve,,,,now inbetween the egr valve and upper rad hose is where the coolant temp sensor is,, its just below them,,there is a little wiring harness with a yellow and a black wire going to it,,,,it actually screws into the lower side of the cylinder head,,,,just squeze the wiring connector at the 2 thicker spots and pull it straight off then take the coolant cap off the resivor,,to relases pressure and put it back on,providing the car is not hot,,,,the sensor is actually a 13mm or 14mm socket that removes the sensor,,,,,they usually crack and leak into the harness so check the harness for corrosion,,,,be like green/blue on terminals,,if so youre gonna have to wire in a new connector,,,,no big deal ,, normal s-series issue,,,do not use aftermarket junk like autozone as these do not read correctly from the start youre gonna have to shell out the money at the saturn dealer for the good stuff ,,like $18 for the sensoe and $37 for the connector but it comes with the 2 **** connectors you need to wire it in,,,so if you remove the sensor just put the new one in snug but dont break it off,,,,top off coolant,,,,cut the 2 wires off the old connector as close to the end as possilbe. so you retain as much wire as you can,,,,,it doesnt matter which wire goes on what side but i lke to keep it the way it was the black wire on the right and the yellow on the left,,use the **** connectors,then heat shrink them and wrap them with electrical tape and youre done
1999 Saturn SL
on Aug 19, 2014