My 2013 6.2L with 85k miles has recently started being noticeably louder at idle. Its a rough scratchy or gravel type sound. Almost like static on a TV.
The idle is stable and doesn't bounce at all.
The AC being on or off doesn't change the noise.
I replaced the 2 idlers pulleys as 1 was definately in poor shape and are cheap enough. Didn't seem to help.
Next I will check the tensioner pulley.
Any other ideas on what could make that scratchy noise?
Thanks,
Adam
The idle is stable and doesn't bounce at all.
The AC being on or off doesn't change the noise.
I replaced the 2 idlers pulleys as 1 was definately in poor shape and are cheap enough. Didn't seem to help.
Next I will check the tensioner pulley.
Any other ideas on what could make that scratchy noise?
Thanks,
Adam