i have a 2005 ford ranger edge and it seems lately every time i hit a bump my truck has been making a chirping sound i dont know what it is please help

 

Yeah on my other 2005 with the stock 2.3l it makes a weird quick continous tapping sound at freeway speeds. im almost 100% its the valves, any input?

 

To K23, my 1999 2.5L does the same thing. It sounds like a marble in a tin can or something? Every now and then (like once a month), I'll top of the gas with 89 octane. That seems to help a little. Mine doesn't burn oil, so the valve guides aren't worn, and I have plenty of power, so I just say screw it.

To bigjay, it could be the shocks. Mine are super easy to take off - take the wheel off and remove three nuts.