I couldn't really hear it all to well but it sounds like a bad bearing. I would take your belt off and check all the pulleys for abnormal play.
I also had a similar sound in my old 89, the tab that holds the distributor broke so it was not secured. It made a very similar sound but got worse as time progressed, I found the problem before it did any damage.
02 Grand Cherokee Sport 4.7 Selec-Trac / Red Jeep Club Member #374
- Dynomax Super Turbo - K&N FIPK!!!
Last edited by Max78; 06-26-2013 at 10:06 AM..
Reason: Me grammar good?