Join Date: Aug 2013
Feedback Score: 0 reviews
P0420, fan running, metal cracklin, bad idle
Im trying to diagnose CEL. Reset codes and the first code to appear was P0420.
Not sure if related but figured I would mention:
Ive noticed that my fan has been turning on, blower off, but the engine temperature was just fine. It is actually sort of cool out and I've rarely ever heard the fan run.
Also, you know the sound you get after you turn the car off sometimes, the exhaust and metal cooling down? Well it makes that noise all the time now, even when car is running. I may be crazy but it all seems new.
Also the car is drivable, but you can tell its hurting a little, idles very bad while in Drive at a stop. Throttle, idle is just not happy all around.
So obvious sings are o2 or cat?
I'm pretty sure right before I got the car @ 80k, there were records of Subaru, under warranty replacing the front two down exhaust down pipes and o2 sensors? maybe just one sensor, but could have been both.
Do any of these symptoms point directly to one or the other? Try o2 first?
2004 H4 160k