I bought a Water temp switch today to replace. I see where its at, I think. Do I have to remove the intake boot to get to it ? How about losing coolant ? Its at the top so I doubt it. What size socket is it ?

 

you have to drain down the coolant . and remove the fan assy. disconnect the neg. battery cable and put a plastic bag over the end of the cable so i does not make ground . if i remember right its a 36MM deep socket ?but you have a new one to see what size it is . and yes pull off the intake boot if you need the room .

 

No its not the switch on the bottom of the radiator, its under the intake.

 

Well, you don't REALLY have to remove the coolant. You can unscrew the old one and pop it out and pop the other one in and turn a couple threads quick and you only lose a pint or so. It's kind of messy and antifreeze is corrosive, but that's how i do it.

edit:
Are yout alking about the coolant temperature sensor, or the fan coolant temperature switch on the radiator?

 

Nope not the one on the rad Im doing that one too, but the one thats underneath the intake right by the Intake boot. Towards the front of the car. Small sensor with a blue plug.

 

For the thermo switch on the radiator - do it from the bottom after you've drained down just a little coolant out of the radiator. I didn't have to remove the fan assembly.

Don't know about the other sensor.

 

On my car it's a 19mm.