GenVibe - Community for Pontiac Vibe Enthusiasts

05 base Vibe. about 180,000 miles on it.
Shakes a lot when in "park" with the a/c on it is most noticeable.
all motor mounts are original.

Some coils were replaced with used one,s a few years ago.
Plugs have about 70,000 miles on them. Maybe a/c compresser is original. Had recent thermostat and rad and fan replaced.

Engine air filter is due for changing.

Scan at auto zone had the code about tranny "tcc", torque converter being "off". Not noticing any driving problems about that.

There are a lot of various tune up related things that could cause a rough or low idle.

Could be a motor mount, people here have had to replace them sometimes

What does the tach read when its shaking at idle?

If you in park with the AC on and the hood open, can you see the engine shaking? Is there any significant wobbling of the serpentine belt? of the serpetine belt