spence230

Hey guys i have a 1998 c230 with 167k on the odometer, i recently replaced my secondary air pump and after i cleared the code i began driving it to allow the readiness monitors to reset. it has been almost 4 weeks and the monitor still shows being not ready. anyone have any thoughts. also there is a little bit of rattling inside of my cat. im not sure if it is going bad because if it was wouldnt the check engine light be on? i have a basic code reader that tells me if my readiness monitors are ready or not. i have driven the car plenty and the monitor still wont perform

Kimmer

if your cat is rattling its shot.

ThomasLarouche

You won't have a CheckEngine light if the Cat is on the verge of failing.