Subject: Re: Main and Fuel Pump Relay Author: Shayne (moderator) : member since July, 2005 : 5386 posts Posted on: 2007-02-15 22:11:10

I can send you a new main relay (part number 12631729004)... I only have one... OE Stribel. $10 + shipping. No failsafe with the main relay so consider keeping the old one stored in a ziplock bag tucked in behind the side panel in the trunk.

Fuel pump relay is part number 61361378238. If you suspect the fuel pump relay replace it with any other orange relay.

All E34 main relays and fuel pump/O2 sensor relays are in the right hand e-box under the hood. Remove the four Philips head screws that hold the cover on and, on your 525i, there they are in plain sight. The white (OE) or silver (Bosch) relay is the Main Relay and the orange relay is the Fuel Pump Relay.
On the V8 cars you need to remove the two nuts (10mm head) that hold the harness in between the modules. Once the nuts are removed pull the complete harness piece up along with the relays. Again white or silver is Main and orange is Fuel/O2.

Shayne
525iTA
533i
735iL



I don't know the same things that you don't know.

• Main and Fuel Pump Relay - bobbert 2007-02-15 20:19:42 (192 views)
  • Re: Main and Fuel Pump Relay - Shayne 2007-02-15 22:11:10 (257 views)
    • A stupid question - bobbert 2007-02-16 13:13:23 (146 views)
      • Re: A stupid question - Shayne 2007-02-16 13:42:17 (147 views)
    • Re: Main and Fuel Pump Relay - bobbert 2007-02-16 13:09:50 (131 views)