With the truck cold, try to beat on the catalytic converters with you hand and see if it rattles. I'm thinking the core may be lose. If you hear a slight clunk, that's probably it. Unless it is...
Type: Posts; User: Polaraco
With the truck cold, try to beat on the catalytic converters with you hand and see if it rattles. I'm thinking the core may be lose. If you hear a slight clunk, that's probably it. Unless it is...
How about a year
Try to describe it. Is it tinny sounding? Maybe you have a lose cat converter.
Is it under a load? Or does it do it in neutral?