black dust from serpentine belt

[tryme]

winterizing the E21 this weekend noticed a lot of black dust from the serpentine belt.  i didnt check the pulleys yet but could i just be a worn belt?  or do you think i have a pulley going bad?

[Capt Rick]

Both

90911602454   V Ribbed Belt           $ 85    45 shipping

Pulley clean and paint w wire brush

Spray airflow sensor with the airflow sensor cleaner, then reinstall make sure you pay attention to how it was removed to know that the lettering for Toyota is upside down

[Epic Dave]

I had the same issue so I replaced the belt with a racing quality belt. It was made by Gates and I got it from Rock Auto years ago, but it doesn't look like they carry it any longer. That really reduced the amount of dust.

I'm pretty sure this is the one I have: https://www.motion.com/products/sku/10538935

[cyclone]

Wow, great info! it has been a nuisance since I've owned epics, along with carpet fibers clogging the flame arrestor.

I clean it yearly, my pulleys were rusted so I pulled them off and wire wheeled them as Rick suggests. Did not know about orientation of sensor! I'll check and post a pic.