I recently bought a '92 Accord EX that started and ran great until a couple days ago. I got out of work and attempted to start the car. It turns over fine but won't start. I sprayed starting fluid into the air intake to rule out a fuel issue and it made no difference. I then checked for spark. No spark getting to the plugs. I checked the coil wire, no spark from the coil. Now I don't know if the lack of spark is due to the coil, the ECU or the PGM-FI Main Relay . I did not check for the timing belt and will do that when I get back to the car. I will also listen for the fuel pump noise. I read FAQ but it did not help me to know where the ECU is. I need this problem fixed ASAP without buying parts that are not the problem. Please help.

Performing the tests outlined in sections A and B below should help you solve the problem:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563.html#post219438

Check the main relay it is under the dash to the left of the fuses it is a little gray box. I have only had problems with a main relay on hot days. And if you had a change of idle speed it would idle high and low continuously