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Ok, we've tried everything, so I am resorting to the experts! Here's the situation: 1970 1800E. Car starts & runs fine. When the bright lights are flashed or engaged or disengaged, the car briefly sputters when the stalk is released.
Upon doing further diagnosis, it appears that the computer is instantaneously shutting down. The reason I say this is because with the car off, you can switch on the ignition and hear the fuel pump relay (and pump) turn on for approx 1-1.5 secs. Then, without starting the car, if you flash the bright lights, the pump relay and pump run again for 1-1.5 secs. As far as I can tell, this is the indication that the computer thinks that it has just been turned on, and it should "prime" the fuel pump.
We have tried everything, including checking the FI ground wires, separately powering the computer (bypassing relay), checking for momentary power drop in the feed line to the computer, even totally isolating all FI harness wires and only powering and grounding the computer. The result is the same - when bright light stalk is flashed, upon returning to the "home" position, the computer "resets" and pulses power to the pump relay for 1-1.5 secs.
I'm stumped, and will be headed back to Australia on Tuesday, so really hope somebody has the clue so I can help Dad get the car put back together by then! Thanks you guys, and feel free to e-mail Dad directly at garysievert@swbell.net if you can discuss/chat one-on-one.
Regards,
Greg Sievert
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