Car is using a tonne of gas. Rich fuel smell outside the car. Car idles rough when completely cold but otherwise fine. Whats wrong?
2 Answers
If it's running rich you should be setting some trouble codes, so get those read, it might be a sensor issue or something else like a leaky fuel rail or injectors.
1 people found this helpful.
The car is throwing up a P0420 code referring to cat. I have had the cat examined and it is in working order. The front o2 sensor has been replaced but the second has not. Also the coolant sensor was changed. I suspect a sensor but they are costly to replace so I am trying to narrow it down.