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Mazda RX7 FD3s
Electrical / ICE
Fuel pump wires and no live.
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<blockquote data-quote="Gavzzorz" data-source="post: 25315" data-attributes="member: 635"><p>your best bet is to find and fix the issue rather than adding wires. The factory system uses a resistor for low pump speed and then a relay for high pump speed that is ECU controlled.</p><p></p><p>If you have an immobiliser then that is more than likely the problem. my friend had a no start issue on his second FD and i traced that down to being the immobiliser where its relay connection was just push fit spade terminals and one had come loose (Wired into the starter solenoid).</p><p>Your immobiliser could be wired into that Red/White Fuel pump feed that runs down the passanger side</p><p></p><p>If it was me i would remove the passanger side sill cover and pull back the carpet a bit and follow the wire back from the seat to the ECU Area.</p><p>You might find that its chopped and intercepted.</p><p></p><p>you have already checked all the other components now assuming its not a dead Fuel pump.</p></blockquote><p></p>
[QUOTE="Gavzzorz, post: 25315, member: 635"] your best bet is to find and fix the issue rather than adding wires. The factory system uses a resistor for low pump speed and then a relay for high pump speed that is ECU controlled. If you have an immobiliser then that is more than likely the problem. my friend had a no start issue on his second FD and i traced that down to being the immobiliser where its relay connection was just push fit spade terminals and one had come loose (Wired into the starter solenoid). Your immobiliser could be wired into that Red/White Fuel pump feed that runs down the passanger side If it was me i would remove the passanger side sill cover and pull back the carpet a bit and follow the wire back from the seat to the ECU Area. You might find that its chopped and intercepted. you have already checked all the other components now assuming its not a dead Fuel pump. [/QUOTE]
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Mazda RX7 FD3s
Electrical / ICE
Fuel pump wires and no live.
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