Finally, a breakthrough! But it's weird......
My fuel pump uses much of the old carb fan wiring and relay in the spare wheel well. I decided to bypass all this, and run a wire direct from the fusebox to the pump, with a switch in the cabin to control the pump, and an indicator bulb on the pump so I could see if it lost power.
I took the car for a long test drive and it is still stalls / goes into limp-mode. When this happens the indicator bulb is still lit.
But instead of pulling over to a stop and turning the ignition key, I just coasted along and flicked the pump switch in the cabin a couple of times, and the engine picked up again. Happened 4 or 5 times.
So the act of turning the pump off and on again clears the fault.
My fuel pump uses much of the old carb fan wiring and relay in the spare wheel well. I decided to bypass all this, and run a wire direct from the fusebox to the pump, with a switch in the cabin to control the pump, and an indicator bulb on the pump so I could see if it lost power.
I took the car for a long test drive and it is still stalls / goes into limp-mode. When this happens the indicator bulb is still lit.
But instead of pulling over to a stop and turning the ignition key, I just coasted along and flicked the pump switch in the cabin a couple of times, and the engine picked up again. Happened 4 or 5 times.
So the act of turning the pump off and on again clears the fault.
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