3O3EL0VR4
Well-known member
So now that I finally have 671 back to a daily drivable condition, I have noticed when I am sitting in traffic the operating temperature is completely fine but as I start driving the temp goes way back down, almost all the way to the C. Which, I didn't realize it until I was coming to a stop and getting an idle surge about 4 or 5 times from about 1k to 2k rpm. Then, the temp gradually goes back up and the idle surge doesn't rear its ugly head any longer. At first I thought the huge radiator and giant FMIC was to blame but, I know this is a classic symptom of a thermostat being stuck open.
What my question is, does anyone know if the ecu reading that cold of temperature would cause the idle surge? My theory is that when it reads cold it is making the IAC sensor want to run higher rpm's??
I'm going back to Mitsubishi and getting a thermostat tomorrow so I can put it in this weekend.
What my question is, does anyone know if the ecu reading that cold of temperature would cause the idle surge? My theory is that when it reads cold it is making the IAC sensor want to run higher rpm's??
I'm going back to Mitsubishi and getting a thermostat tomorrow so I can put it in this weekend.