Mechanics

MY 3.8 V6 5 SPEED MANUAL RATTLES WHEN I START MY CAR AND LEAVE IT IN PARK/NUETRAL EVERYTHING IS FINE BUT WHEN I REV MY MOTOR IT RAT

2000 Ford Mustang • 186,000 miles

Basically when my car gets to 2000 rpm it starts rattling but from under neath the car I changed the motor mounts transmission mounts clutch flywheel oil change in both motor and trannsmission when I rev it with the hood open you dont hear a noise so I no its not the motor its sounds more like somewhere around the transmission area
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Anthony1991
July 31, 2012.



It may be a catalytic converter heat shield. See if rivets have broken off.

Hmac300
Jul 31, 2012.