Volvo RWD Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 9/2009

[<<]  [>>]


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

fuel pump relays??

Most often someone rigs these when the ecu no longer supplies the open-collector ground needed to energize one of these two (main and fuel pump) relays. Usually it is the fuel relay that doesn't get the ground that is supposed to be there when the ecu sees ignition pulses at the coil's low side (ECU pin 1). You may have to replace the ecu (-503 or -510) to make this work properly again.
--
Art Benstein near Baltimore






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New fuel pump relays?? [200][1984]
posted by  someone claiming to be tattoonick  on Fri Nov 29 12:05 CST 2002 >


<< < > >>



©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.