Motrionic Relay Location - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 6 (permalink) Old 09-10-2019, 03:13 PM Thread Starter
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Motrionic Relay Location

Can anyone tell me where the Motronic Relay with Diode is located - my injectors aren't getting power and we can't seem to find where this relay is located. I've attached a close up of the wiring diagram that was in the repair manual.

thanks in advance
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post #2 of 6 (permalink) Old 09-10-2019, 03:34 PM
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Give us a clue by telling us the year and model of your Alfa

Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #3 of 6 (permalink) Old 09-10-2019, 03:36 PM Thread Starter
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Sorry my bad- 1989 Alfa spider veloce
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post #4 of 6 (permalink) Old 09-10-2019, 03:57 PM
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Pretty sure that's the wiring diagram for the 1990-on Motronic system. Your '89 will have L-Jetronic.

Tom

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Former: 1987 Milano Gold
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post #5 of 6 (permalink) Old 09-11-2019, 06:26 AM Thread Starter
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That makes more sense - I think the fellow working on it with me said he couldn't find a wiring diagram for an 89 and was hoping the 90 diagram in the garage manual CD we have was the same on our car. My problem is we have no power to the injectors - my first thought is this is an ECU problem since my other 89 alfa ECU had to be rebuilt (unfortunately the mechanic who helped restore my other '89 is retired). Does anyone have any diagrams or advice on how to figure out why/ from where my injectors are not getting power - I have no problem pulling the ECU and sending it to the same place that fixed my other one but if there's something simple we can check first and get the car running that would be ideal. I've got the : Bosch Fuel Injection and Engine Management Handbook if there's anything in that. Also from what i've been reading are there 2 ecu? If so where are they located - I know one is behind the passanger seat when I lift the cover the top goes down over. Sorry for all the questions but we've been trying to figure this out for a while and i'm not sure what else to do other than maybe see if the guy who helped us with our other alfa is still around.
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post #6 of 6 (permalink) Old 09-11-2019, 07:13 AM
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There is plenty of information posted on here about troubleshooting L-Jet. Look at any post by ghnl and you will see the link.

Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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