Where is the fuel pump relay located on a 1990 Honda Accord LX?

Answer 1

My 1990 Honda Accord had a problem of not starting when the temperature of the interior compartment was extremely high such as after setting in the blazing sun for several hours with the window up. I searched the Honda discussion boards and found that the Main Relay part number RZ-0088 has the fuel relay inside, also, and that replacing it will cure the problem. I tried it and so far so good. As I was replacing the Main Relay I noticed that it is placed about 1/8� from the surface of the dashboard. Now I�m no genius but the temperature at this position with the sun beating down on it must be near that of nuclear melt down. Electronics and heat don�t mix a fact that must have been lost on the Honda engineers. I moved it to a lower position where a bolt mounts another item. No, I did not use the original Main Relay but I believe that by remounting the relay to this or another position that has some airflow that the relay would surely work. 1993 Honda Accord. Following Haynes manual info and several on-line help sites I was not able to locate this relay. The area near the fuse box is very congested and there are several relays mounted above the fuses but the main/fuel pump relay was nowhere to be found. After repeated searches I removed the cruise control unit which is about a 3x4 inch square box and the main relay was underneath that. Hope this saves someone some work. I had no fuel pressure at all. In trying to locate the relay I repeatedly switched the ignition on and off to try to locate it by sound and feel. This exercising actually fixed the problem temporarily for me and seems to confirm the problem as an intermittent relay failure.