Fresh Cat smell even after nearly 20k miles?
Anyway, I think the IAC was the culprit. Every time I moved it or tweaked it or changed my air intake over the last week I got the sulfur smell...
-I cut a vent into my fender (its damaged anyway....) to let in more air and the car stunk on the first hard acceleration
-When I first changed out the sensor for the new one the car stunk
-When I moved the position of the sensor the car stunk
It didnt smell on acceleration after I had ran the car for a while without moving the IAC (I'm assuming the ECM adjusted for the changes).
Anyway, I modified how I had the sensor mounted today. I have a cone filter with a metal collar leading to a plastic tube running to my intake. I drilled a hole in the metal collar and used the old sensor to tap threads in it. Heres a pic of the old sensor... its kinda nasty looking:
After this change I did get the smell one more time with the new sensor, but I imigine its because I changed the location of the sensor yet again... Assuming it doesn't smell again, then I think I can definitely say it was the IAC. I'm still going to try to spray down parts with carb cleaner and see what happens though...