Originally Posted by VTX1800N1
These type of noises are almost always something in the air intake tract. IAC valve is not a bad place to start. Does it still have the stock intake ducting?
The air intake tract is referring to the IAC, Plenum/TB, and intake setup right?
I put the stock intake back so yes.
I notice that on idle, if my air conditiong is on, it does it a lot. Every other 30-45 seconds. (I changed my waterbump around 12,000 miles ago).