Quote:
|
Originally Posted by drum655
i think the strange noise i was hearing is a bad cat. is it normal for a cat to only make noise after the engine is hot. when i first crank up the engine it does not make noise, only when its hot. also, does a bad cat usually have a rhythmic pulse that lines up with the engine...
|
When my cats went out in my 1998 D1, they had a somewhat rhythmic sound. It was in fact, around Christmas time when they went out, and I was 100% for sure they were playing the Little Drummer Boy Song! LOL! The catalytic converter consists of a honeycomb like material, once broken down it is free to move inside the metal enclosure allowing for a metallic noise.
If broken, it should like marbles in a can. Turn the truck off, grab a garden hose, and get underneath the truck. Use the hose to bang around on the exhaust system and see if you are able to duplicate or mimic the noise. Careful, it is HOT under there! GOOD LUCK!
