Hey guys....
I bought a new air flow sensor from ebay. After installing the new sensor and reset the battery, the warning light disappear. Let the car warm up, and after 5 minutes, the warning pops-up. This time, the car idling was erratic. I was puzzled (wow)..
Since it's worse than beffore, I re-installed back the old sensor & reset the battery. Surprise....the warning dissapear for good, and the car idling is back to normal....what the heck is going on???? Any ideas....