I have a 2005 Neon and just a few weeks ago I noticed that both of the passenger struts (some call them motor mounts) were tore up and not doing much. Then every once in a while specifically when the car hadn't been running for a while and every thing was cool. When I started it up and accelerated from a stop I could hear and feel a type of rattling that seems to be coming from under the hood. This only seemed to happen at low speeds when I was accelerating and applying relatively higher torque to the wheels. I could put it in neutral and the rattling would stop. Even when I reved it in neutral there wouldn't be the rattling vibration I felt before.
So I replaced the 2 upper and lower passenger struts that I could visually see were tore up and now the problem is worse and the vibration/rattling happens more often and consistently.
I'm really not sure whats going on, but right now my guess is that it is the transmission mount?? or motor mount?? or both??
I'm leaning towards transmission mount because of 2 reasons: 1. It only seems to vibrate/rattle when it is in gear accelerating. 2. Possibly the replacement of the engine struts positioned the transmission side of the vehicle to rattle more because of the added stability?
So my question is... Does anyone know what else it might be
? And does anyone have any info on how to go about replacing the transmission mount? Or at least testing to see if its broken?
Thanks in advanced for the help