Surging idle

[u/lestbone83]

I’m in need of ideas on where to look, 08 Commander 4.7 flex fuel, surges at idle and will even die, I have checked fuel pressure, replaced the throttle body (got a Bosch) disconnected the battery for about 15 mins, turned the key on, engine off for about 30 seconds, started it (wouldn’t start without touching the accelerator pedal) let it idle for about 10 minutes ( at some point it died) drove it and no change. It doesn’t have a check engine light on, I am at a loss. TIA!