I'm trying to help a freind he has a 92 dx hatch. his pgmfi fuse under the dash keeps blowing. it blows if the key is turned on to the on position. all the time. he tried the main relay but that wasnt the problem. the car ran a week ago when it just shut off he replaced the fuel pump, and main relay to no avail. now its blowing this fuse if anbody can help thanks!!

 

unplug the o2 sensor, replace fuse, call me in the morning.

 

Well.... if its blowing the fuse, something is shorting out. Grab a DMM and find your short. Quite simple.