I pulled in from work only to hear a loud, very rapid tick-tick-tick sound coming from the car. I opened the hood and it sounds
like it'* coming from one of the belt pulleys. It was tough to hear which pulley(*) might be causing the problem (if any at all).
It sounds like a telegraph. It'* not a constant tick-tick-tick, but rather a tick--ticktick-tick...a random pattern.
I noticed that it does it most while the engine is idling. The ticking volume changes a bit at different RPMs. It also ticks a bit less when the RPMs are increased (either revved or held at an RPM even as low as 1000-1200).
Is this a pulley problem?
For those who want to see/hear it, I've got 2 different videos of it. My server didn't like .avi files, so I zipped them up.
(2.4 MB, short clip of the sound)
(11.7 MB, longer clip of the sound with a short rev to 2000+, a hold of the revs at 1500, a shut down, and a start up)
Sounds like I'll need a trip to the service department for this, but do you have any ideas of anything else it could be (besides a pulley)?