Supra Stalling and Power Loss

That sounds familiar. I had similar symptoms on my Supra. Have you checked the high-pressure fuel pump? In my case, it was faulty and causing inconsistent fuel pressure. It's like trying to run a marathon with a clogged air passage.

Interesting! So, if the high-pressure fuel pump is defective, would that directly cause the fuel volume regulator to malfunction or show as defective during diagnostics?

Yes, a failing high-pressure fuel pump can definitely impact the fuel volume regulator. The regulator struggles to maintain the correct fuel pressure if the pump isn't providing a consistent supply. Think of it like a dam struggling to control water flow when the river feeding it is fluctuating wildly. I'd advise getting it checked at a reputable workshop.

Thanks for the advice! It turns out the high-pressure pump was indeed the culprit. The repair cost me 1510€, but at least the Supra is running smoothly again.