The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Driving without Overdrive Relay 900 1993

"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.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.