Cadillac Repair: 84 Cadillac Seville - no power, cadillac seville, wiring schematics

Question
HT4100 with only one throttle body injector working (getting voltage).
No codes or service lights on.
When I put the working wires on the other injector, that injector sprayed.
Replaced ECU to no avail.
Any ideas?

Answer
Are you absolutely POSITIVE that you replaced the ECM and NOT the BCM ?.

If you have battery voltage to each injector the other wire on each injector goes directly to the ECM which grounds the wire in order to mke the fuel spray.

If your POSITIVE you replaced the correct computer, E-mail: [email protected] for wiring schematics and test procedures.