Climate Control & Vibrations Issue?

[KustombyJustin]

2003.5 MSP w/120k on the odometer, It's been mine for less than a month now, I am the 3rd owner, my sister being the 2nd and idk who the 1st was. Anyways she's my daily, drive eh approx. 30 miles a day. Mostly at speeds between 35-60 mph, with the occasional stop & go bs traffic.

* My concern is that I notice a considerable amount of vibration, with the climate system is on. The vibrations are very much apparent when I've come to a stop that. Every once in a while the idle will fluctuate between 800-500 rpm's. If I turn off the fans/ac/heater/defrost then almost immediately the vibrations will stop.

*My question is, what could be the culprit? Has anyone else experienced the same or similar symptoms and what steps were taken to resolve the vibration issue.

*I don't want to band-aide the issue, please NO duck tape, bungee cords or super glue type suggestions.
Thank You!

 

[hornsfan10609]

So the car shakes more when the AC compressor is running? Thats normal, are the motor mounts stock? You may have a vacuum leak or something causing the idle to fluctuate.

 

[KustombyJustin]

To be honest I have no clue if they are stock, I really have zero knowledge of Mazda's, this my first, Any suggestions as far as what to look for regarding aftermarket mounts? I think iirc that the mounts looked kinda like stainless steel w/ reddish colored inserts so I'm assuming that they are not?! I Dunno so

 

[KustombyJustin]

Oh BTW, Thanks for the pointers, I need all the info/help I can get

 

[protege3690]

take a pic of them. but sounds like from the description they may be AWR mounts. really good mounts, but youll definitely get vibrations since those are solid polyurethane mounts.

 

[hornsfan10609]

Definitely are not stock mounts if they have red inserts, stock mounts are all black. That's why it shakes with the AC on, it's normal and personally I would not change the solid mounts back to stock mounts.