First thing I'd do is swap the 2 servo connections in rx and make sure this isn't a radio problem (actually, I presume that this still works - it was how I used to check stuff in old days) - if you swap them and the steering then works on throttle control you know the radio is ok. Also make sure nothing obvious like a dial on tx that can reduce range - I had this on my sons steering once - he'd turned a dial full off instead of full on.
I always set up the ESC by plugging into my PC and using the software as it is pretty easy. Make sure you have settings correct (forward / brake or forward / reverse) etc. Also is a cut out causing it? Again, either use the box or software and make sure all is programmed ok.
Check that abc output on ESC goes to abc on motor. Is sensor lead plugged in?
Beyond that I'm not sure as I tend to work through trial and error and I'm no expert
Hope that helps
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I've got Araldite and a Swiss Army Knife - what more do I need?
Yokomo YZ-2
No 4WD because nothing lives up to my original Optima. Until now maybe?...
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