Check engine light?
All systems seem normal, car idles fine...
What could have changed and cause this? I read that this is emissions related.
AFR meter looks like always.
I have about 9k miles since installing th eaton SC.
Could be nothing more than an intermittant lead/connector. Have a good look at Temp sensor 2 connector and wiring. If this goes open or short circuit the LH ECU will revert to a default "normal temprature" setting, and will output a fault code.
The check engine light is for emmission type faults.....


