Lexus Random STALL...After Engine Swap? (RX350 V6)

In general, Toyota and Lexus vehicles are very reliable...

However, this 2007 RX350 V6 is on its second engine at 190k miles.
It got towed to a local shop because it randomly STALLED out on the owner.

They said the EFI fuse keeps blowing, and the FUEL PUMP RESISTOR gets red-hot...
They replaced the fuel pump, but obviously that did not resolve the problem.

Here we go...place your bets now. What is going on with this CRAZY Lexus??

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Ivan