I don't remember anymore who told me some time ago, that the fuel pump under the tank would/could shut off when overheating.
Mike,
It is not the electric fuel pump near the tank that overheats. It is the FIP, mechanical Fuel Injection Pump.
It "vapor locks" when the fuel gets hot. The flow of the electric pump should be 1 liter per 15 seconds. The car only "burns" a small fraction of that. The rest of the fuel is being pumped in a big circle cooling the FIP and running back to the tank.
1. Drive car till stalls, or even better, let it idle until stalls. It was about 10 minutes for me.
2. Pop open the hood/bonnet.
3. Slap on an inductive timing light to any spark plug wire.
4. Crank engine.
5. Look for flashing light on timing light. If not light, no spark. If light, then you have spark.
Now, disconnect return fuel line to tank at the fuel tank. Turn on electric fuel pump with car NOT running. Measure how much gas flows in 15 seconds. Check against spec (1 liter per 15 seconds).
If low, you found it and send me $200
. I don't know why I said that, I usually don’t kid around.
If not, more diagnosis is needed.