car trembles at low RPM

[bruce_240sx]

My car trembles at low RPM right before i drive off, whats going on? HELP!!

Thanks

[shinjitsu]

couple things that can effect idle
-pcv
-iacv
-vacuum leak
-distributor/sparkplugs/wires
-broken wiring harnesses

[anti tyler]

VACUUM! 99% sure. some of the vacuum lines right under the intake runners might have slipped off. At least that's where mine had an issue.