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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Fuel Pump Problem? 700 1989

posted by  someone claiming to be Chris on  Sun Jul 1 10:20 CST 2001 [RELATED]

My '89 740 has 236K miles and has been a great car; however, I have run into a problem that doesn't make sense to me. A couple of weeks ago, the car was idling in the driveway and died. Since then, I have tried to restart several times - it will run for 15 seconds or so then die again. As we also have a running '91 940 that has the same relays, I traded the fuel pump and radio suppression relays out to see what would happen. It didn't help. Also, when I jumped contacts 30 and 87a on the fuel pump relay socket, the main pump on the 740 runs, although I could not hear the in-tank pump at all.

Trying to determine what was happening, I removed the cover from the fuel pump relay. There were two sets of contacts inside. The set that was to the top of the relay (in installed position) closed when the key was turned on. The lower set didn't seem to close at all. However, if I manually closed the second set of contacts, the car started and ran normally – at least until I let them open again.

It seems like I have two different problems. First, the in-tank pump seems to be dead. Second, the main pump doesn’t seem to be running when it should. Since installing a known good fuel pump and radio suppression relay didn’t fix the problem, is the lack of an in-tank fuel pump causing the problem? Could all of this be related to a bad fuel pressure regulator? I’m running out of ideas and don't want to start randomly replacing parts.

Thanks for any help you all can provide.

Chris





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.