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 

Two relays in that white case (LH 2.2 and 2.4 FI) 200 1989

uid 18083's pic
posted by  lucid on  Thu Mar 21 07:56 CST 2013
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

"So jumping 4 and 6 will basically do the same job as the relay?"

Yes, most of the time. It depends on which of the TWO relays inside that white cover is failing. Besides the "pump" relay, there is a "system" relay that seldom fails, but when it does, the FI system is totally dead.*
(Aside to Onkel Odo: There is no component diagram on the white plastic LH relay case.
But the terminals to connect to force the pump ON are 30 and 87-2.)

Here's an alternative to paper clip fuse jumpering: Get a spare relay and force the pump relay contacts closed with a short piece of rubber hose. (See pic below). Then simply plug in that relay in place of the suspected one.
NOTE: If the pump is good, it will run as soon as the "rigged" relay is plugged in.

Fuel Pump relay contacts held closed by short piece of hose...


* A 3-legged "Y" jumper will bypass both pump and system relays. Power (30) is wired to pump (87-2) and System (87-1) to power ECU, AMM, Injectors, etc. Adding an inline ON/OFF switch to the +12V terminal 30 wire leg will allow the pump to be temporarily controlled as needed.
NOTE: This jumper should ONLY be used as a temporary fix, as it nullifies the built-in Bosch FI Safety shut-down in case of an accident.


--
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.