My truck (2008 4.2 TB) has developed a drone. It becomes noticeable at about 40mph and up. It is coming from the front end. Its not dependent on engine rpm and shifting between D and 3rd causes no difference as does removing the gas. There is no detectable difference in cornering in terms of the sound. Hubs were changed out about 1 year ago (with no names). If I were to guess its sounds like the drone of a "honda muffler" that you hear on "some people's cars".... ie. sewing machine...
Since it doesn't appear to change with engine speed, I was thinking that it can't be an exhaust issue... but maybe as the manifold was replaced last summer... maybe loosened or cracked again... :-(
Not sure what else to consider or how to narrow down what it is at this point. I am planning to pull the shield and check / tighten manifold bolts and check for cracks.
Comments / suggestions?? Thanks
Since it doesn't appear to change with engine speed, I was thinking that it can't be an exhaust issue... but maybe as the manifold was replaced last summer... maybe loosened or cracked again... :-(
Not sure what else to consider or how to narrow down what it is at this point. I am planning to pull the shield and check / tighten manifold bolts and check for cracks.
Comments / suggestions?? Thanks