how to check a catalytic converter?

[c418]

what are some methods of telling when a cat or cats have gone bad. when idling my truck sounds like a diesel, is that a sign?

 

[J.Wal]

I think you can check the temp of them and depending on how hot they are will give you a idea. A muffler shop can go into detail on it.


Sent from my iPhone4 using Tapatalk.

 

[supercrewzn]

Smell the exhaust for a rotten egg smell.
The cat will glow cherry red after you drive the truck.
It can rattle
It can cause loss of power

 

[c418]

thanks for the info. no rotten egg smell, have noticed a loss of power. i'll check the rest out tomorrow

 

[Darth Bama]

My passenger side's begin to rattle a little...I know what's coming.

When my driver's side went out it was an awful sound, you'll know if that happens. It was glowing a little by the time I'd gotten it home.

 

[c418]

alright good to know. i was afraid it was one of those unsung things that can go bad and you'll never know if you're not watching out.

 

[Sl33p3r]

My truck makes a little rattle when laying on the gas. If mine go out im cutting em off and off to the scrapyard.

 

[97madness]

mine makes a little rattle, but its not a constant one. gonna be something to hunt down once it gets a little warmer.

 

[Darth Bama]

The only time mine rattles is when I'm pulling into a parking spot or a drive thru. It's almost like it rattles more when I let off the gas and let the RPM's drop. Other then that it's not bad and it's not a constant.

 

[rrogers]

park in your garage,close the garage door, start your truck and sit inside with the windows down. if you fall asleep your truck is fine but you are not.