1998 Mitsubishi Galant. Will the computer reset without driving?
The check engine light came on. Code p0170 - Fuel trim malfunction (Bank 1). I replaced the gas cap and added B-12 to the gas. I erased codes and drove 87 miles and the light came on again. This time code p0125 - Insufficient coolant temp for closed loop fuel ctrl. I replaced the thermostat, erased codes and drove it again. At 97 miles, light came back on. I am going to do some other maintenance to try to cure this problem. Any suggestions would be appreciated.
My question is, do I have to put the miles on to reset the computer? Or can I leave it idle to do so?