TougeRoads96

haha I'm just kidding....but I do have a question....I was prepping my car for installation of my new radiator (whenever it gets here ) and I removed 2 what is probably sensors... to me... on the very top and another on the bottom right...anyone who has installed a koyo or changed out an s4 radiator in general....can you tell me what those are? if you know what i am talking about?

iceblue

Coolant level sensor and temp switch.

TougeRoads96

thanks alot....so should I replace those? or keep them and then transfer them over?

mightymite

iTrader: (1)

whats a piston? i would replace them and keep the old ones for spares bcs they do wear out if they are good but if u wanted to as long as they still work u can tranfer them over loctite makes a good thead sealer u might wanna check it out and its rated for high heat and presure to

TougeRoads96

thanks I'll look into that

My5ABaby

iTrader: (7)

IIRC, the bottom one is for the AWS.

dothacker

i thought the bottom one's are for automatic trans only? i just installed my koyo today and i didn't find any sensor at the bottom of my stock radiator, of course i have a 5 speed. :P

NZConvertible

The temp switch (bottom) is for the emission controls and not really important. The level sensor (top) is very important.

My5ABaby

iTrader: (7)

I've been running with the bottom one disconnected for years now.