OK, I think I found a place for my aftermarket temp sensor
without tapping, dieing, drilling, etc. My car has a metal
elbow in the bottom radiator hose with a fitting for
plugging the car up. I suppose this is a cold weather
climate option. Anyway since I live in S.A. Texas I can't see
much use for it. Therefore, I've found a replacement bushing
with a reduction to the 3/8" input my sensor needs that may
work perfectly. Two questions though, 1, I think the elbow
is aluminum, the sensor is brass and the bushing (from local
hardware) is galvanized steel. Is this metal corrosion
disaster?? Next is locating a temp sensor to control my big
fan in the lower radiator hose a good or bad idea? Thanks
for any help. I'm ready to get this car back on the road!!
Thanks again,
Don
1994 XJS Coupe, 6.0L

 

Don,

That plugged hole is possibly teh hole that the 5.3l used for the electric fan. The switch was a 85c on/off switch and very reliable.

I fit twin Ford thermo fans to V12's, and simply use that switch to earth the relay when needed with NO issues at all.

That mix of metals "should not" cause issues, as long as the coolant is kept right up to spec. Not my favourite mix, but ya got to do what ya got to do.

The 5.3L switch was a 22mm X 1.5 threaded unit. It was used in MANY cars, including SAAB, BMW, Merc, just to name a few. These cars used diferent temperature settings.

Look at, http://www.tridon.com.au/pageBANK/do...079-Switch.pdf. Near the bottom, about page #191, shows the snaps, and listings of all their temperature ranges etc. Maybe you will find a neater arrangement.