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Re: 1994 740IL relay location (archive)

[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]

Posted by Jerry on October 15, 2001 at 05:40:19:

In Reply to: Re: 1994 740IL relay location posted by Jens T.M.745 on October 12, 2001 at 21:46:08:

Yes, Jens, I am the same "Jerry"! After I replaced my intake air temp sensor, all was fine for a short while, then I replaced the fuel pressure regulator. Then the spark plugs (with the NGK platinum plugs).

Each repair makes things better but the idle problem comes back within a day or 2 or 3.

My "black box" looks just like Michael describes it from the Bently manual. Starting from the wind shield & counting forward; 2 large connectors and then a 3rd that appears to be connected to the DME. In between connector #1 and #2; at the bottom of the box are 2 relays that (color wise) can be the main relay & fuel pump relay. I did not want to chance removing all that stuff to get to those relays until I knew they were the correct relays.

Can you folks tell me if the main & fuel pump relays are in that black box in the front right of the car (and are not in the fuse box, front left engine and are not under rear seat)? If so, even though there may be some difference between Michael's car and the Bently manual, we've probably got them located!

Also, Jens, I agree that chances are slim that the relays will fix the problem but I want to try all the $10 and $20 parts before I give up and go to the big $$$ items.

Thanks as always! You folks and this forum are great!

I'm assuming you are the same guy as below?
OK I will give you the exact location after on
Sunday, Yet I highly doubt it is the main Relay,
as it is on the E23 if thats bad trust me she whant even humm. :)
I'm expecting the issue to be ground oriented,
here is why, code O2 sensor const.
the only way that could always show as that would be a short.
The issue with Johns and your car is way to uneven, thats why I fear a wire issue.

I will keep you up to date.

Sincerely Jens

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