Contour Enthusiasts Group Archives Forums General Troubleshooting whistle coming from under the hood

finally got my SC CAI out of the car and cleaned the K&N filter. put everything back making sure all hoses and clamps are tight. WELL the whistling still there but the car breaths easier. I was shocked i couldn't believe how much dirt was on the filter (in less than 12000Kms/4 month).
will i've tried everything i can think off to fix this annoying problem.

I've noticed several contours that make a distinct whistle at idle...mine does it, especially if it's humid out. It seems to come from the UIM somewhere, goes away when driving. Mine started after I cleaned my TB. I noticed on the TB a small hole, that was clogged with carbon. It's not anymore. Perhaps thhat is whats whistling? Minor annoyance...