My s15 seems to shake a lot when its not mobile but once I give her some gas it stops. I already boosted the idle a bit wich worked for a while but now its back to doing it again. Any suggestions?

motor mounts, tranny mounts?


misfires, injectors, fuel pump, fuel filter?

How dirty is the pcv valve?

misfiring plug?

plugs brand new. wires brand new pcv valve brand new cap n rotor brand new mounts brand new fuel filter brand new all sensors brand new.

injectors are old... ill try them but i literealy went through EVERYTHING in this engine to make it mint. im even talking vaccume hoses lol.
the tbi is older but it seems to be working and spraying on point. i cleaned the piss out of it. it just has such a rough idle.

in that case i'd say you have a bad injector. multimeter test for sure.

Ill surely try replacing emm.

If you can scan it and check a/f etc might give you a better idea however if you changed mounts and all that stuff I would saythe mounts are probably just stiff and making vibration. if it happens at different rpms I would say it is a balancing problem in the motor check the balancer make sure it isn't wobbling

It is either skipping or you have a broken/weak mount. There is a definate difference between the two, but it is something you just have to know....can't really be explained over the intarwebs.