bad noise after i start my car

[Paul17]

I have 11 mazda 3 GX and
If I let me car sit for awhile then start it up for 1 quick second I get a loud rattle or banging heat shield noise. Passenger side only. the dealer checked everything even replaced my a.c unit but noise still there. Its freaking me out it only happens what it wants to
I have a video



https://www.youtube.com/watch?v=hPNIt0I5Nzg

[FD22]

Video is private, and thus un-veiwable.

[Paul17]

OPPS there fixed it


https://www.youtube.com/watch?v=hPNIt0I5Nzg

[FD22]

OPPS there fixed it


https://www.youtube.com/watch?v=hPNIt0I5Nzg


Hmmm that's weird. Not quite sure what it is, so I'll let others chime in.

But to not be totally useless in this post...embedding video for convenience to others:


https://www.youtube.com/watch?v=hPNIt0I5Nzg

[Paul17]

yea the dealer cant find the issue and my warranty ends in 1 month. =[

AND Ty

[Paul17]

I had a friend inside.my car and start it after it was sitting 24hrs and I had the hood open and the noise happened LOUD RATTLE/HEAT SHIELD BANGING NOISE for 1 sec and my engine moved so much kinda twisted Its nuts the dealer ship won't fix my issues cuz it never happens to them!!!!

[Lmmorden]

Shhhhhh... Your scaring the mice!
.. But really if your engines moving that much check your mounts. Moffat Mazda let's you watch the inspection.
Hope this helps