[Slayerdies]

Ok well there is a slight vibration in the car when idling which I assume is a little normal.
However while parked at a slant today passenger side being lower. My wife and son opened passenger doors and left them open and the car really started shaking noticeably. Any ideas or just normal?

 

[FleetwoodGliderHTX]

harmonic balancer?

 

[Slayerdies]

Not sure. Engine shakes back in forth about 1/2inch to inch at idle.
If its a big problem I would rather catch it now.

 

[grandpas wagon]

Motor mounts?

 

[cletus284]

If it does this idling in park, I would suspect that you have a misfire. These cars should run so smoothly you can't tell they're running. How old are plugs and wires? What's your fuel pressure?