Strange whistling noise?

[tcoon]

I took my nearly completed coupe for a drive today after completing installation of the doors. Wow it really feels like a car now! Strange thing happened though...at the end of my drive the car started hesitating a bit and began emitting a very loud whistling noise. Seemed to want to stall a few times. I have installed the speed dial adapter and the car has previously been running fine, although admittedly I only have maybe 5-10 miles on it gokarting. Goes like stink at open throttle. All gauges ok, no apparent leaks or problems...any ideas from the brain trust?

-Tom

[bansheekev]

I'd be checking all the fittings/hoses/clamps/vents/pcv on the intake for a leak. Any air bypassing the sensor in the intake tube will cause driveability issues and stumbling. Something could have loosened up in the first heat cycle similar to what people have reported with radiator hoses/clamps. The Coyotes are very sensitive to the air flow metering signals to the computer. Much more so than any of the previous 4.6's.

[riptide motorsport]

Definitly sounds like one of your vacume hoses came loose.