Coolant Temp sensor CEL 2g

[FSTRDNU]

i have a cel for coolant temp sensor, so i replaced it, and cleare the code and it came back, and had the sensor tested, and it is NOT a BAD sensor, and than i tested another ECU, still the same problem, it must be in the wiring i assume?

anybody?

 

[Black95TSIawd]

there are two or three sensors on the water housing. Which one did you replace? The one the ECU uses is the larger one towards the bottom pointing towards the rear of the car.

 

[spooln4fun]

That bigger one shoudl have a black plastic housing on it, another sensor is a small one with one wire connected to it roughly pointing to the side of the vehicle

 

[FSTRDNU]

there's a coolant temp switch, which is one wire, which controls the gage,
than theres another one thats in the rear, that faces toward the rear of the car, thats the one i replaced, still no luck

 

[Black95TSIawd]

time to go wire chasing. follow it back from the sensor all the way to the ECU and see if there are any cuts, burnt wire, etc. Or, pick up another sensor and see if the one you originally bought was fubbered.