flash7210 wrote:
Could be the fuel rail pressure sensor going bad.
Or a loose connection at its harness connector.
Or it could be that the fuel rail pressure solenoid briefly got stuck for some reason, cleared itself out, and when you restarted all was well again.
OK, I can run with all of those ideas, and thanks. I'll start researching how horribly-expensive (and time-consuming) doing the pressure sensor and solenoid will be.
The plan for now is to drive it and see if it happens again. A new fuel filter is on order, but won't be here for a few days given that Christmas is pretty much here.
Apart from the above ideas, about the only possible cause I've found that makes sense is air in the fuel lines. Checked the priming pump and it was rock-solid, so suspect that's probably not it (or, if it was, it cleared itself out). Any ideas as to the likelihood of this one?
(FWIW, I am planning on doing a lift pump, but that's going to happen in the Spring when I won't freeze my booty off installing it.)