Would the CEL come on? Would it change the sound of the exhaust?


I'm just asking because suddenly my exhaust sounds different....almost more "airy" if that makes sense.
I honestly don't know how it's changed all I know is that it DOES sound different, on top of that I suddenly have some weird vibrations coming from somewhere at speeds 80Kph+ and it gets worse the faster I go.

a coil pack or plug is my only suspicion right now.

 

year/motor?

If a coil pack went out it would have a dead cylinder. It would idle like crap and the CEL would flash.

 

well, neither of those things happening.
It's an '02 4.7

Like I said I don't know whats different, I just know something changed based on the sound.

 

It's quite possible you may have blown out one of the catalytic converters. How many miles?

 

You'd definitely get a misfire code if a coil pack went south.

 

260,000km

there is only one converter.

what would it sound like if the converter was toast?

 

there is no distinctive noise, the exhaust just gets a little less restricted. Im far from positive thats whats wrong, thats just my best guess for a sudden airy exhaust note.

 

Are you running an after market muffler? Is it a glass pack? And how many miles on your tires since you last balanced them?

 

Found the problem a while ago.

The long piece of flexi pipe I had one there rusted, opened up and eventually fell off.

This is why the sound changed.

 

That would do it.