Join Date: Nov 2002
Location: Jefferson State
Assuming it's engine noise, not drivetrain...
If you don't yet have a mechanic's stethoscope, get your longest screwdriver and place the end of the handle against the side of your head, just in front of your ear. Avoiding moving fans, belts, and pulleys, touch the tip of the screwdriver to different areas such as idler pulley, water pump, power steering pump, alternator etc. It'll help you find the source of the noise.
1995 5.2 ZJ Sold... but still in the family