04-24-2013, 09:41 PM
Last sound I had like that in my other car drove me crazy. I could swear it was coming from the transmission area (I got really scared), yet it sounded like a heat shield (very distinctive noise of sheet metal rattling), one day I took a couple hours and crawled under the car, it was coming from a heat shield between the CAT and the under body, very hard to see. Moral of my experience, never trust your ears only, specially when inside the cabin of the car, sound travels in a very sneaky way. What's different on yours is that it makes the noise only when car actually moving, so maybe look in the drive-train? if you suspect is the t-belt cover, take it off and take a drive without it, that'll tell you if it's something else. I'm sure fixkick has a way to determine if the tbelt tensioner pulley is good or bad. I had doubts on mine and just changed it since I was doing tbelt and head gasket on mine anyway.
1996 Geo Tracker, CAMI, 16 valve, 5sp, 4x4, soft top, 2 door, no a/c