Originally Posted by fitigued

The red tempnwarning light came on. First time in my life ive seen it. So i hooked up odb2 bt module and using paid dashcommand app (i didnt like torque) saw that coolant temp was 220f, maybe even higher. Intake air temp was 120f.

Turning off ac and blastimg heater eventually got temps down below 200f.

With cooler ambient air temps around 90f, even after flush and replacing thermostat (170), and with just me in the car, no trailer, heat on full, cabin fan on full, fresh air, radiator fan jerry rigged to switch and on, air intake temp 100-105f, im getting 190-195f highway, 200-205f city.

Is it supposed to run that hot? I know this is getting a little off topic, but whatever.

Wondering those of you with odb2 or guages, could you report your coolant temps? With ambient temp, air intake temp, ac status, city/hwy?

Also wondering at what temp your fan kicks on. Even at 205f mine wasnt kicking on. Parts store said no switch. Then does ecu control fan operation? I just rigged mine to a switch in the cabin. If there is a radiator switch, where is it?

Originally Posted by SLVR6

Normally a 180°F thermostat starts opening at 180 and is fully open at 195°F.