just like the title...i think its behind the water pump near the thermostat...but im just double checking

I thought the coolant temp sensor was on the bottom of the radiator??? I could be wronge. Or on the lower part of the water neck. https://www.nopistons.com/forums/pub...IR#>/dunno.gif https://www.nopistons.com/forums/pub...IR#>/dunno.gif https://www.nopistons.com/forums/pub...IR#>/dunno.gif

I don't know about an s5 TII, but I'm pretty sure the water temp sensor is just to the left of the oil pressure sender at the back of the block

for the gauge cluster gauge it's by the oil pressure sender on the rear iron as said above.. but there is also one in the water pump housing which i'm guessing the ecu uses for it's dedicated purpose only.

so where is the water temp sensor for a s4 t2?

sooo when im putting in a water temp gauge...where do i put the sensor in

If you dont mind having a dead gauge, just put it where the stock one was/is right next to the oil pressure sending unit.



If you do mind having a dead gauge on your dash, take off the waterpump and have it drilled/tapped to accept your new sending unit.

well i have a "dead" water temp gauge and i can't figure out why

dead sensor / wire / motor ? whatever is in there is dead



hmm....mebe ill tap it

Good excuse to drain/flush/change your coolant while youre at it.

heh...dude within the past month ive drained and flushed the coolant like 5 or more times....taking the radiator out many times so i just decided to flush while its out...

Speaking of coolant temp sensors, I just purchased a fluidyne radiator to replace the stock radiator. The fluidyne has a place to accept a temp sensor for my water temp gauge that I will be installing. It makes it really easy to install without having to drill and tap in the water pump but how accurate do you think it will be in the bottom of the radiator?

check the sensor on the rear iron housing of the engine, the one wih the oil filter on it. Theres a little sensor on the drivers side, the wire may have disconnected.

thats what i'm hoping

but i dont want to fix it and find out that i'm really still overheating the car i just didn't know it... what color is the plug or wire

for my temp gauge i have a nut welded to my thermostat housing, this might not be possible with an S5 since its plastic, you can also look for one of those blocks that goes inline with your radiator hose and has a bung for a temp probe.

Id rather have my coolant temperature gauge before the thermostat....