X5 stalled/set codes while being inspected!

[workingonit]

Originally Posted by andrewwynn

...

If there's a problem with fuel supply, it can be related to the three hoses that come into the right tank from left.

Until the tank is lower than 27L or so that doesn't come into play though since the left tank floods to right at about 27L.

If you didn't add fuel since the cornering hiccup, i would open the tank and make sure the level is not at the flood stage and check the siphon side. If it's never been addressed there's a very good chance it's failed.


–awr–

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I never opened the left side of the tank, nor did I see the three hoses you mentioned, inside the right tank. Only ever touched the hose that attaches on the top of the fuel pump I replaced.

I'm not sure if I'm understanding this fuel system (I've got your AWR-fix: e53 Fuel pump / siphon pump details thread, RealOEM, and NewTis up on other Window tabs right now, trying to wrap my head around this weird fuel system). If I added 9.6 gallons (36.34 liters) on the immediate fill-up, does this mean that the left side tank/siphon pump went dry, and is failing now?

What should the "flood stage" level be, now that I've only driven 33 miles on a filled tank?

i'm trying to formulate a plan of action to diagnose and fix my fuel delivery system, before I tear everything apart, and maybe make things worse. Is it possible that resetting adaptations screwed up driveability, somehow?

This could take me awhile...after all, i had been trying for four years to find the reason for lean fuel trims, before the fuel pump failure, and never did. I'd sure like to get back to the old days, with points ignition/mechanical fuel pump/carburetors. I understood all those....

Perhaps I should ask this way... someone once asked for something to be explained to him, like he was a 5 year-old, so I'm just a 5 y.o., too, (plus 70), and in my 5th year of BMW ownership, so I'm slow on the grasping of the split tank operation scheme.

I've got other, newer vehicles that still use the conventional in-tank pump set-up, so I'm hoping that if/when I get my X5 back to operating condition, I won't have to go back to school to replace a failed pump, next time.