OK long story short i took my sons 88 dx in to have the motor rebuilt returned the car 4 times with problems finally told the guy u drive it for a day if it dont blow up ill come get it well it blew up. so he replaced it with an engine from a crx (d16a6) said its an si. had problems with smoking running bad. by this this time id had it with this guy. i found water in #3 cyl. replaced head gasket solved smoking problem. still not running right ran like it was 180 out of time. ok i know short story. #4 fuel inj not working no power. traced wire to ecm no power coming out of ecm to that wire all others have power. question is if i take cover off ecm can it be fixed. I should have done the rebuild myself.

 

The ECM pulses the injector wires to ground. The other side of each injector is connected to battery power through a resistor pack. So check the resistor pack and injector for continuity before tearing into the ECM.

Yes you can work on the ECM like any other electronic device.

 

ok ill check it out and get back