verylate

Performed the 90K service, timing belt, water pump, valve lash, spark plugs, other checks. I've changed plenty of TB and a few on a LC as well. The LX470, 2006, fired right up and settled into a smooth idle. It did present the VGRS light but I suspect that was from some fluid leaking from the removed hose. Shut it off to top the antifreeze and then it would not crank to start. Checked all connections. Reset codes by disconnecting battery. No crank. Left it for a few hours and then it fired right up. Next day I drove it around the block to reset the steering light, which it did, then drove it about a mile and it died at the stop light. No cough or sputter, just died. It restarted and drove a few miles, and it died, luckily I coasted to a parking lot. It then would not crank. A few hours later it fired right up. Repeatedly shut off and restarted. Drove it home and at one point it felt like all power cut off for a half second and a mile later it died again. The check engine light never went on. Disconnecting the battery to reset the ECU did nothing. I want to note that I did spray cleaner on and in the throttle bottle butterfly and cleaned it with a rag. Also used electrical cleaner on the sprockets before installing the TB to remove antifreeze but later learned it is not recommended. Did not use a code reader yet because the CEL is not lit.

I offer this challenge to come up with a viable solution. I have a vast technical background but this is a new one.

2003lx470

I am thinking something to do with your fuel flow in to the engine.

verylate

How would a fuel issue prevent the starter from energizing? Now looking for bad ground, relays, or wire bundle to starter. When engine is cold it fires right up, repeatedly. When warmed for 10 minutes it will shut down and not crank, or simply not restart until cooled. Put new battery in it anyway with no change.

Tuanle

vacuum leak?