1990 accord 2.2 l I am getting no spark to plugs. before it would start fine at first but once you drove awhile it would not start for quite a while. some say main relay others say ecm (or is it ecu). Or is it something else?

 

could be a distributor issue also....

 

Test your ICM - ignition control module (aka ignitor) & your coil.

 

http://techauto.awardspace.com/ignition.html

 

where is the coil located friends?

 

Inside the distributor. If you remove the distributor cap, rotor button and dust sheild you will see it.