Hey guys, I have a mate who's 88 320i won't start, it's cranking but there is no fuel and no spark. I read on here that the crank sensor gives that symptom so I got one for it. Fitted it and no difference. So I checked the pump it's working when you give it power but the wiring doesn't show 12v wen you crank. I checked for 12v at the coil and that's good, so I swapped the coil out of my own 325 but made no difference still no spark or fuel. I checked the wiring from the ign switch right across to the fuse box all ok. I even swapped my own ecu but they are different so I borrowed one for a 320i but again no difference.
There's a black box in the right hand kick panel I dunno what it does, anyone kno what it's for? Also which relay is for the fuel pump? The three relays on their own I think is one of them?....
Any help guys pls cos I've often had no fuel or no spark but never both together!!
Cheers, Colin.
320i non start help pls
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Grrrmachine
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Does the ICV buzz when you turn the ignition on?
'89 325i Touring | Touring Resto Thread | In-Dash Screen install
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Brianmoooore
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This is where I would start. No power here fits the symptoms.WillNZ wrote:....... provided that there is a good power supply to pin 30.
The ignition switch only provides power to the ignition coil and a signal to the ECU instructing it to turn on. The main power to the engine ( and pin 30 of the relay) comes direct from the battery + terminal via one of the smaller red wires bolted to the battery clamp.