i'm not confident i can explain clearly. i feel what is almost like a pulse from the engine, a little bump/shake/can't-explain once every few seconds during idle such as sitting at a stop light. the engine feels fine when i gas it, and as long as i'm moving. i only feel it when i stop for a light. please help diagnose.

 

throttle body needs cleaning? crap in there can throw off the idle air control valve. ???

 

I cleaned the TB last week. i haven't cleaned the IAC tho. i'll try that next.

 

Adjust the idle, raise it a bit. A TB hose ay be loose or punctured.

 

Sounds like a coil pack to me....

 

it idles at about 700 right now. i will check the coil pack also, but i thought a bad coil pack would be very obvious on acceleration.