"Or am I still driving around in 3rd gear?"

With no relay to energize the solenoid there will be no "4th gear" Overdrive.

OD operation involves 4 components and the wiring that connects them...

1) Fuse 11 (200) or 12 (700/900) supplies voltage to items #2, #3, and #4.

2) The Shifter button/switch turns the OD relay off and on. (See NOTE* below)

3) The OD relay controls the OD solenoid and the Upshift ("OD off") Arrow light (separate wires). When the Arrow light is ON, the OD relay and solenoid are OFF.

4) The OD solenoid allows OD engagement when ON (this is the "default" OD relay/solenoid state at start-up).

If your shifter switch makes the Arrow light go on and off, then the OD relay is working (although it could still be failing to control the solenoid voltage due to burnt contact points or broken wire to solenoid).

If Arrow light doesn't go on and off, start with the Fuse. If fuse is OK, suspect OD relay, shifter switch, wiring to the relay, or the relay itself.

Otherwise, the problem is most likely the white undercar wire from OD relay to Solenoid (#4 above) or the wire connector terminal at the solenoid. Less likely would be be Solenoid itself.

*NOTE: The relay can be bypassed (equivalent to relay always ON) with a jumper wire. Not too easy on 700/900 cars, but possible.
Details on request.


--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.