Join Date: May 2008
Location: Country Created by Geniuses, But Run by Idiots...!!!
It could be the fan relay and not the coolant temp sensor. When the coolant temperature reaches 210 deg. f the sensor's switch should close and complete the negative connection (ground) to the fan relay. Remove the wire clip from the sensor (bottom of the radiator left side) and put a wire from it to any part of the engine that doesn't have paint. You don't need the ignition on for this test. If fan doesn't come on it's prolly a bad relay. Also check the wire connection at the fan motor it's below the fan.
2010 Triumph Speedmaster
Last edited by kay; 08-10-2015 at 08:37 AM.