I have a problem with my 92 accord . When is cold the idle is high like it should but after the engine warms up it idles up over 2000 rpm down to 1200 back and forth even while I am driving it.If I let the car sit for a small amount of time it will idle at 800 rpm. I have replaced 2 sensors one was a coolant switch and the other was a coolant sensor. Please help me figure what is going on... MARK

I think the igniter inside your distributor is failing--easy to replace. I would replace your coil and rotor at the same time.

Also, reset your ECM by removing the backup fuse, in the under-hood fuse box, for 15 seconds or disconnecting the negative. Battery terminal for 15 seconds.