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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Speedometer stops working 700

posted by  Bolbo on  Sun Nov 9 12:47 CST 2008
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Feb 24 12:14 CST 2013
[RELATED]

Does the odometer continue to work? If so, the problem is internal to the speedo, not wiring or sensor at the differential.

There are electrolytic capacitors on the speedo circuit board that leak electrolyte (black gunk that hardens). Replacing these capacitors and cleaning the board (especially between pins of nearby components) will typically fix the problem.

The common culprits are the following three capacitors but check all electrolytic capacitors:

10 micro Farads 25V
6.8 micro Farads 25V
22 micro Farads 50V

If you do replace them, make sure the capacitance of the replacements is the same as the originals and the voltage is equal or greater than the original.

Getting a speedo from the junk yard is a crap shoot. Since this is a common problem, the speedo either won't work, or will eventually fail like the original.

Michael
Melbourne, Fla

1985 740 460k
1988 780 Coupe V6 190k
1992 745 200k





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.