I started hearing this sound today on the way home from a trip. I have no idea what the heck it is but it really doesn't sound good. Any clue what it may be related to? Its when I rev at driving at lower speeds. Any help is appreciated.


*Its a little hard to hear* :/

 

soundsl ike somthing is loose in the drivetrain--valves, springs, liftrers or something vibrating around looely--take it to dealer as you have warrant i assume

 

Closely resembles a bad waterpump, possibly in the early stages of failing. I'm not sure though. Try to see if you can isolate where the noise is coming from, e.g. front of engine, under valve covers etc. etc. Good luck

 

bad water pump or idler pulley.
take the belt off and spin what you can to see where the noise comes from.

 

water pumps dont make a noise annyyything like that...its a valve train piece fo show

 

It is normal .. every old diesel engine sounds like that.. just kidding sorry

 

Sounds like idiler pulley.

 

You guys are flipping awesome. It turns out it is the idiler pulley and water pump.
And also I'm getting some belts replaced, its gonna be around $500.