I was wondering if a car can run if the Catalytic Converter is bad,
going bad, or is loose? My car started making this noise for no
apparent reason, the car runs great,no vibration of any kind, no
skipping or cutting out.The car runs perfect except it's making a
noise, sounds like a tail pipe or muffler is loose & is hitting
something under the car, somewhere in the area under the driver's side.
When I'm under the hood it sounds like its coming from the motor. It's
all strange to me. I had a auto shop look at it & they thought it was
the fly wheel, but to their surprize it wasn't, so they are now
thinking it's a bent piston rod, but I don't understand how the car
could run so perfect if the piston rod is broken. I have the car back
home now, without the auto shop doing anything else, I have found that
auto shops take advantage of women, because they think that women don't
know anything about cars & tech stuff. Any advice I really could use.
Thanks in advance

Willow