Rattling noise when ac is on

[engineerjet]

When I turn my AC on there is a loud rattle near the engine. If I were to stand in front of my car I could actually see my front bumper shake. I've read some threads say it could be the AC fan but I can't seem to find a part number. The rattling is very loud and pronounced (again, to the extent I can see the front bumper shake). Is this a common issue?

[StatusQuo]

When I turn my AC on there is a loud rattle near the engine. If I were to stand in front of my car I could actually see my front bumper shake. I've read some threads say it could be the AC fan but I can't seem to find a part number. The rattling is very loud and pronounced (again, to the extent I can see the front bumper shake). Is this a common issue?

Check the metal mount that connects the exhaust/cat to trans. Check if it's not loose. That can vibrate.

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[engineerjet]

Can you be specific? The noise seems to be coming from towards the front of the car and not near the transmission area.