Fuel Supply Problem 320i Jetronic. Will pay for fix!

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creat1on
E30 Zone Newbie
E30 Zone Newbie
Posts: 13
Joined: Mon May 18, 2009 11:00 pm

Post Wed Jul 22, 2009 3:58 am

Basically I have a 320i European Convertible with L Jetronic fuel system. I had posted a while back about replacing the fuel pump relay to fix it. Well I ordered a new relay and it did not fix the problem. This is my scenerio. The only way I can get the car to start is to Jump 30-87-87b together and then turn the ignition. There is another relay under my desh that is a silver bosch relay with circuit #'s 87,87a,86,30,85,30. I get battery voltage on 87,87a and 86. The relay under the hood when i jumper it the fuel pump runs and the car starts as soon as i pull that relay the car dies.

What else could this be? I have the bentley and it doesn't reference this second fuel pump relay under the dash and I cant find any wiring diagrams for the euro version.

If anyone could help with a wiring diagram or a few ways to diagnose the problem It would be highly apprecaited!!!!!!!
Last edited by creat1on on Thu Jul 23, 2009 2:34 am, edited 1 time in total.
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creat1on
E30 Zone Newbie
E30 Zone Newbie
Posts: 13
Joined: Mon May 18, 2009 11:00 pm

Post Wed Jul 22, 2009 7:58 pm

When I get off work I'll post up the pics hopefully someone can figure out the mystery.
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creat1on
E30 Zone Newbie
E30 Zone Newbie
Posts: 13
Joined: Mon May 18, 2009 11:00 pm

Post Thu Jul 23, 2009 12:50 am

Here are the pictures posted below. The black one is the one I replaced. Because if I jumper pins 30-87-87b on the black one the car will fire up the fuel pump and will start. Here is the pictures of the Relays and their locations. If anyone can seriously help me fix this I will literally pay you money or buy you a small part for your e30!!!! This problem is driving me crazy.

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