Wreck related or not

NYAAISJAH

MEMBER
2006 HONDA ACCORD
4WD
AUTOMATIC
227,997 MILES

I was involved in a rear end collision back in October. A mechanic says that my engine and transmission mounts need to be replaced as well as my front and rear catalytic converters. I believe this to be wreck related to that fact that I was in stalled traffic at the time. The Honda mechanic I took it to is trying to say that is is not wreck related. But all these problems are new to me. And the fact that the car has been shaking while in idle really gets to me.

1 Reply

HARRY P

MECHANIC
2,293 POSTS

It's definitely possible that it could be accident related. The jarring impact of a rear end collision can push the exhaust system around and potentially break the "honeycomb" inside of a catalytic converter, causing it to clog up and cause issues. Also, obviously, if that impact can break the honeycomb in the catalytic converter, it can easily break a worn out engine or transmission mount. If one mount gets broken, more stress is put on the other mounts, which are also already worn down, and can cause them to break if you keep driving it.

I would say that it's not terribly likely that both of the honeycombs broke inside of their catalytic converters. But, in a two converter exhaust system, many mechanics will want to replace both converters when one goes bad, because generally the other one isn't going to be too far behind. The same goes with mounts.

I hope that this information and opinion helps. Good luck with the mechanic. And remember, if you don't like the mechanic, you can always go to another one to get a second or third opinion.