My car still will not pass the Fast Idle emissions test due to high CO/running rich.
Tech 2 reporting it running only in open loop, won't close so wont run on variable map.
Before you ask, both lamdas checked, cat checked, AFM checked, CTS replaced.
I am thinking either fuel pressure issue or blocked fuel return or even engine temperature sensor issue. Apparently engine may have two coolant temperature sensors. Failing that the heater on my front lamda may be faulty or the wiring to it.
Help, I do not want my car to turn in to a money pit or I will stop loving it and turn to the darkside! lol