[Snailed]

You can also try locating it in a hotter part of the cooling system if possible.

I have never seen an OE temp switch that is that low. Most are 190-250F
Here are some NAPA numbers that are lower temps than typical;

MPE FS120SB -Coolant Fan Switch Temp Rating : On 193-207 Deg. F, Off 175 Deg. F
Coolant Fan Switch Thread Size : 1/2" x 14 NPTF

MPE FS103SB -Coolant Fan Switch Temp Rating : 200-210 Deg. F
Coolant Fan Switch Thread Size : 1/2" x 14 NPTF


Yes, all the aftermarket parts places have lower temp ones. Makes you wonder what's wrong that you would need to have the fan come on so low...