Chevy Cobalt Forum banner

Status
Not open for further replies.
1 - 2 of 2 Posts

·
Registered
Joined
·
713 Posts
Discussion Starter #1
I put my badmab header back on and noticed the O2 sensor was all bent out of shape somehow. I replaced it with the proper ac delco part, but now I am getting this weird noise from that area/rear of the engine. Maybe its not related, but ive never heard this noise before. Im at 125,000 miles, so I suppose it could be worse.

Any of you recognize the noise? Sometimes it doesnt happen at all, sometimes it starts and then stops after a few minutes, other times it never stops.

 

·
Registered
Joined
·
949 Posts
I wonder if the header also got a bit bent out of shape, and now a non-bent O2 sensor doesn't quite fit which causes that weird whistling?
 
1 - 2 of 2 Posts
Status
Not open for further replies.
Top