2000_Civic_Si

Hey, I need to know where I would get the most accurate reading for a coolant temp sensor. So let me know if I am right about this....Does the coolant enter bottom of the radiator then exit the top of the radiator? In that case I would want to put the sensor in the bottom hose...Correct?

I was going to drill a hole in the thermastat housing but the sensor is to long it would interfere with the thermostat. I also tried the factory sensor location but I cant get to it... No room for tools. If anyone has some ideas on the best way to do this, please let me know.

Brian_92GSR

I'm pretty sure it is the other way around. Coolant leaves the bottom of the radiator into the block and out the head into the radiator. You want the sensor as close to the head as possibile. If you were to put it in a hose you'd want it on the upper hose very close to the head.

sgT

drill the coolant neck that comes out of the head.
Plenty of room to mount a sender there.

2000_Civic_Si

OK, Thanks....Just to make sure I want the top radiator hose, as close to the head as possable...Is that right? Thanks for your help.