I'm at my wits end.

[Earl]

Thank you Bill . You say The Green/red is the other side of the switch in the relay and should go hot when the ignition is switched on. The blue/yellow should also go hot when the ignition is switched on but it gets its power from the fuel pump relay.

I have no juice at all from either of those two wires .

[billofdurham]

The Green/red is the other side of the switch in the relay and should go hot when the ignition is switched on. The blue/yellow should also go hot when the ignition is switched on but it gets its power from the fuel pump relay.

I should have also added that the green/red would go hot if the relay worked.

The red wire is hot at all times but the relay stops the current flowing to the injectors (via the green/red wire) until the relay is activated. This activation is via the blue/yellow wire from the fuel pump relay. The theory is that when the ignition is switched on the blue/yellow wire goes hot, activates the switch inside the radio suppression relay thereby allowing current to flow to the injectors.

If you have no power through the blue/yellow wire the relay will not activate. Locate the fuel pump relay and check the blue/yellow wires at that point with the ignition off and on. You should find 4 blue/yellow wires going into, and out of, two terminals.

If you haven't already done so check fuses 1 and 11.

Bill.

[Earl]

Sorry for the long delay, health problems had me down a bit .

I checked the wires and finally found the problem.

For some odd reason both fuel pumps were working , even had fuel all the way up to the injectors as I had stated...but the nearest volvo dealership told me that the fuel pump relay operates the injectors as well and felt that this had to be the problem . So I replaced it and she fired right up .

Sure is sweet having the old car back up to par .

Thanks for all the advice Bill and everyone else.

[billofdurham]

Thank you for the update. It's a good feeling when you get it sorted.

Hope your health problems have gone the way of your car problems.

Bill.