300zx shaking when just sitting there is under 1100 rmps

Question

my 90; 300zx shakes when its just sitting there under 1100 rmps. anyidea whats wrong? alose sharks when at low speeds and stopping.

Answer 1

Bad motor mount(s) would be my first guess.  Do you have a problem with engine hesitation?  Could also be a bad spark plug and/or wire.

Answer 2

Sounds like a misfire. Check the spark plugs and wires, if that doesn't work check for vacuum leaks.

Answer 3

shaking coluld be caused by old motor mounts.