I have a 91 accord and when its in and any drive gears it idles between 600-650 rpm's and sometimes will aslo almost stall, it also shakes a lot. Is there any way to diagnose or solve this problem

 

•Basic tune up

•Search "Idle Air Control Valve" on this forum and read up on checking and cleaning to

•If the Oxygen Sensor (O2 Sensor) on your car is the original or an old worn out sensor, replace it with a new Denso sensor from your auto parts store