I'm getting an erratic idle, so I thought the MAF sensor might be coated with oil from the K & N. I've heard you should clean it, but have no idea what I'm looking for. Would somebody please help a rookie out? Thanks in advance!
If you look inside the MAF housing you will see the sensor protruding. Two wires make up the MAF sensor. They can become fouled due to the oil from a K&N. They may or may not appear fuzzy.
Electonic parts cleaner will do the trick. I have used CRC Letra-Motive cleaner in the past. Bought it at Autozone.
Also, when was the last time you cleaned the filter? I thought my MAF was dirty also, but it turned out to be the filter. I was amazing how much crap came off of that thing that I didnt see untill I cleaned it. The engine idles perfectly now.