After months of searching for an oem left radiator for my 01 I decided to break down and buy the eBay gpi aftermarket for 180 bux. The problem I have is the coolant sensor that threads into the radiator is smaller than the threaded receptacle on the new gpi rad that I purchased. Any suggestions?
I just installed my rad on my SP1, and it was shipped with an aluminum plug for the temp sensor. I added some thread sealant, snugged up the plug, and added a migh-current mini-switch so I can turn the fan on and off at will. I always run with the temp gauge up on the display, so I don't worry about forgetting to turn it on.
That SP1 temp sensor is also the switch that activates the fan, so be sure you have it installed.
There is always + power to the fan when the key switch is on.
When the coolant gets hot enough, the thermal sensor/switch allows the ground to complete the circuit and kick on the fan.
The SP2 works differently.