Help with No Crank and no Fuel pump

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Snowey
E30 Zone Newbie
E30 Zone Newbie
Posts: 21
Joined: Mon Oct 06, 2025 2:10 pm

Sun Mar 29, 2026 5:35 pm

Hi After 6 months in bits I’ve got the 320i cabrio back in 1 piece. You can imagine my frustration as it won’t crank also the fuel pump doesn’t work which may point to the problem. It was working fine before taking it apart and I’m at a loss where to start looking. All the wiring and fuse box was removed also the dash I left the Motronic box in. All the lights work as they should also the cluster seems to be working fine eg fuel gauges etc. It just seems the engine bay is dead. Any help where to start looking gratefully received. David
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BenHar
E30 Zone Addict
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Joined: Sun Jul 11, 2010 11:00 pm
Location: Reigate, Surrey

Sun Mar 29, 2026 5:47 pm

Speedtouch
Old Skooler
Old Skooler
Posts: 14075
Joined: Tue Feb 14, 2006 11:00 pm
Location: Canterbury

Sun Mar 29, 2026 10:18 pm

I would start by making sure you have a good engine-to-body earth strap in place.

If the dash has been apart, make sure the green wire behind it is connected:
https://www.e30zone.net/e30wiki/index.p ... Green_Wire

Also, is there an immobiliser fitted? It may need bypassing or removing if you don't have the key to de-activate it...
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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